I recently bought a HP 15-da0206ng laptop and since my goal was to finally switch from Windows to Linux I installed the Linux distribution Pop!_OS 18.04 LTS which is built on Ubuntu 18.04 LTS. After I installed the OS, I encountered a problem: No WIFI Adapter was detected. The WIFI Adapter in the HP 15-da0206ng is a Realtek RTL8821CE 802.11b/g/n/ac, according to HP. I quickly found a solution for this: https://askubuntu.com/questions/1071299/how-to-install-wi-fi-driver-for-realtek-rtl8821ce-on-ubuntu-18-04 I disabled secure boot in BIOS, connected my Laptop via cable updated and upgraded and installed the driver and my WIFI Adapter was detected and worked. However, my download speed via wifi is very slow. The terminal and the browsers (Firefox and Chrome) download everything with a speed of around 85 kb/s. According to this site (it is a German site): http://www.speedmeter.de/ my download speed is at 0.6-0.7 mbit/s. My upload speed is at 5 mbit/s which I consider normal. I did the same speed check with my Samsung phone and it reaches a download speed of 102 mbit/s and an upload speed of 5 mbit/s. Something is clearly wrong with the download speed of my Notebook. After researching this problem I found this thread: https://askubuntu.com/questions/1148030/slow-wifi-connection-ubuntu-18-04/1148065?r=SearchResults#1148065 but switching antennas resulted in no difference. Selecting a specific antenna explicitly seems to be a working solution if your wifi signal is not strong, as it is explained here: https://askubuntu.com/questions/1058379/wifi-signal-is-weak-in-ubuntu-18-04-with-rtl8723be In my case I would say that the signal strength is not a problem. As you can see in the results of running

dev wifi list

IN-USE  SSID                            MODE   CHAN  RATE        SIGNAL  BARS  SECURITY  
 *       Burt-Reynolds                   Infra  1     405 Mbit/s  82      ▂▄▆█  WPA2

I also turned of power saving for the wifi adapter as described at the bottom of this readme: https://github.com/tomaspinho/rtl8821ce/blob/master/README.md but it did not make any difference as well. I upgraded the kernel from 4.18 to 4.19 but there was no change. I tried to install Ubuntu (instead of Pop!_OS) 18.04 but here I did not manage to install the rtl8821ce drivers at all. Currently I am running Pop!_OS 19.04 where I can install the drivers again but the download speed is still painful slow. Furthermore I went through this troubleshooting: https://support.system76.com/articles/wireless/ which means I tried to change the router configuration, I disabled IPv6, I enabled Antenna Aggregation, I tried to disable the N mode in /etc/modprobe.d/iwlwifi.conf and I disabled bluetooth coexistence. I am not quite sure what to try anymore and my next steps will be to buy a usb wifi adapter or, the worst case, install Windows again. It seems that most questions related to the rtl8821ce are about getting it not working at all. In my case it works but very slowly. I am not sure if I am missing something obvious and that is why I decided to post this problem here. Here is some additional hardware information:

Intel® Core™ i5-8250U
DDR4-2400 SDRAM, 16 GB      
256 GB PCIe® NVMe™ M.2 SSD
Intel® UHD Graphics 620

Thanks in advance.

I have a usb-wifi adapter that shows under lsusb as Bus 001 Device 025: ID 0bda:1a2b Realtek Semiconductor Corp. RTL8188GU 802.11n WLAN Adapter (Driver CDROM Mode) I built https://aur.archlinux.org/packages/rtl8188gu-dkms-git but it did not produce the module expected > modprobe rtl8188gu modprobe: FATAL: Module rtl8188gu not found in directory /lib/modules/6.9.7-arch1-1 so after a comment on that page I installed https://aur.archlinux.org/packages/rtl8xxxu-dkms-git :> lsmod | grep rtl rtl8xxxu 303104 0 btrtl 32768 1 btusb mac80211 1597440 2 iwlmvm,rtl8xxxu bluetooth 1101824 16 btrtl,btmtk,btintel,btbcm,btusb cfg80211 1363968 4 iwlmvm,iwlwifi,mac80211,rtl8xxxu But after reboot it does not associate with the network device.

I've been struggling for a few days now looking for a driver that would bring my Wi-Fi adapter back to life, but I haven't succeeded so far. My adapter is Realtek Semiconductor Corp. 802.11ac NIC (0BDA:C811) and I can't make it work properly. The most annoying thing is that it seems to have no problem running monitor mode, e.g. with aircrack-ng related tools, it shows both 2.4GHz and 5GHz access points, but when it comes to managed mode, it can't connect to the AP no matter the frequency. The issue must be related to the driver itself, because the same device works perfectly on my other Windows 11 machine, and the AP itself works just fine with other devices connected. So far I've installed numerous 8821CU drivers from github (as I'm unable to find the 8811CU one), but none works. The last occurence of a 8811CU driver (which worked just fine back in the day) I can recall is this one: https://github.com/brektrou/rtl8821CU but it's obsolete right now and can't compile. Does anyone have any suggestions? Edit: I've also tested this issue on 3 different distros: Ubuntu 22.04 6.2 kernel, Kali Linux 6.4 kernel and Parrot OS 6.1 kernel. Each one has this problem, so I conclude that no distro is single-handedly responsible for the issue. Edit 2: I managed to make it work, but not all the time - the adapter, given enough time (several minutes after session start) is now able to connect to any network available, but the connection is not reliable as there are moments of major packet loss %, or it disconnects from the AP once in a while, again tries to reconnect for several minutes, etc. Bitrate is unaffected, though.

/home/user/Downloads/Rt-Linux-HDaudio-5.18/alsa-driver-RTv5.18/alsa/acore/info.c:1065:22: error: macro "__DATE__" might prevent reproducible builds [-Werror=date-time] "Compiled on " __DATE__ " for kernel %s" ^ cc1: some warnings being treated as errors I've tried to export CFLAGS="-Wno-error=date-time" but nothing changed.

I've been trying (unsuccessfully) for the last few days to make my Realtek ethernet card to work. I have no problems with my wireless connection: only the ethernet connection doesn't work. I have Ubuntu 16.10 on a Dell Inspiron, with a RTL8101/2/6E PCI Express card. The card used the r8169 driver, which seems to be buggy and unreliable (as in [here](https://unix.stackexchange.com/questions/134878/make-linux-load-specific-driver-for-given-device-realtek-nic)) . Since the solution seems to be to use the r8168 driver, I: * installed the package r8168-dkms via apt-get, * blacklisted the r8169 module in /etc/modprobe.d/ * rebooted. It didn't work, as lsmod still listed the module as in use, and lspci -v still told me that the card was using the r8169 driver and module. I finally managed to blacklist the module passing the option to grub, by adding modprobe.blacklist=r8169 to the default command line in /etc/default/grub. The problem is that the r8168 module loads fine (I see it in lsmod), but it's not associated with the card so it doesn't show up in ifconfig (exactly as it happened to [lumi](https://unix.stackexchange.com/users/27995/lumi) in https://unix.stackexchange.com/questions/134878/make-linux-load-specific-driver-for-given-device-realtek-nic) . This is the relevant portion of my lshw -C network: *-network UNCLAIMED description: Ethernet controller product: RTL8101/2/6E PCI Express Fast/Gigabit Ethernet controller vendor: Realtek Semiconductor Co., Ltd. physical id: 0 bus info: pci@0000:01:00.0 version: 07 width: 64 bits clock: 33MHz capabilities: pm msi pciexpress msix vpd bus_master cap_list configuration: latency=0 resources: ioport:3000(size=256) memory:b0600000-b0600fff memory:b0400000-b0403fff My device: > lspci -v -s 01:00 01:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8101/2/6E PCI Express Fast/Gigabit Ethernet controller (rev 07) Subsystem: Dell RTL8101/2/6E PCI Express Fast/Gigabit Ethernet controller Flags: bus master, fast devsel, latency 0, IRQ 11 I/O ports at 3000 [size=256] Memory at b0600000 (64-bit, non-prefetchable) [size=4K] Memory at b0400000 (64-bit, prefetchable) [size=16K] Capabilities: Please note that in the output above lspci does not show any drivers nor kernel modules in use. Finally, I tried to make my NIC to use the r8168 driver (as explained in this [answer](https://unix.stackexchange.com/a/141414)) , to no avail: % sudo echo 10ec 8168 > /sys/bus/pci/drivers/r8168/new_id /sys/bus/pci/drivers/r8168/new_id: File exists. % sudo echo "0000:01:00.0" > /sys/bus/pci/drivers/r8168/bind /sys/bus/pci/drivers/r8168/bind: File exists. What am I missing? Is there another way to tell a device to use a driver? Any links, clues or indications about what to read next would be helpful and very much appreciated.

I have a rtl8821ae-based 5GHz WiFi card on my desktop PC (It is pci-e TP-Link Archer T4E) I would like to install and use Linux to this desktop. I try different popular distros (Ubuntu, Fedora, Manjaro etc) and for all of them there is the same problem: slow wi-fi speed. I googled and tried to build some drivers from GitHub, but the ones I found are for rtl8821a**U** (USB-version), while mine card is PCI-e. I almost gave up, but tried Linux Mint Cinnamon and finally Wi-Fi worked as expected at full speed! Then I assumed Linux Mint uses some special driver. I decided that I need to figure out which one is used by Linux Mint to have a freedom to choose distro. I found the answer here: [How to find out which Wi-Fi driver is installed?](https://unix.stackexchange.com/a/7818/85258) Below is my output of Ubuntu (which has terribly slow Wi-Fi):

user@ubnt:~$ sudo lshw -class network
[sudo] password for user: 
  *-network                 
       description: Wireless interface
       product: RTL8812AE 802.11ac PCIe Wireless Network Adapter
       vendor: Realtek Semiconductor Co., Ltd.
       physical id: 0
       bus info: pci@0000:02:00.0
       logical name: wlp2s0
       version: 01
       serial: xx:xx:xx:xx:xx:xx
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
       configuration: broadcast=yes driver=rtl8821ae driverversion=5.8.0-48-generic firmware=N/A ip=xx.xx.xx.xx latency=0 link=yes multicast=yes wireless=IEEE 802.11
       resources: irq:158 ioport:e000(size=256) memory:df400000-df403fff

user@ubnt:~$ lsmod | grep rtl8821ae
rtl8821ae             233472  0
btcoexist             155648  1 rtl8821ae
rtl_pci                28672  1 rtl8821ae
rtlwifi                94208  3 rtl_pci,rtl8821ae,btcoexist
mac80211              905216  3 rtl_pci,rtl8821ae,rtlwifi

user@ubnt:~$ modinfo rtl8821ae
filename:       /lib/modules/5.8.0-49-generic/kernel/drivers/net/wireless/realtek/rtlwifi/rtl8821ae/rtl8821ae.ko
firmware:       rtlwifi/rtl8821aefw_29.bin
firmware:       rtlwifi/rtl8821aefw.bin
description:    Realtek 8821ae 802.11ac PCI wireless
license:        GPL
author:         Realtek WlanFAE    
srcversion:     64BDAFD5093CE917B32291C
alias:          pci:v000010ECd00008821sv*sd*bc*sc*i*
alias:          pci:v000010ECd00008812sv*sd*bc*sc*i*
depends:        rtlwifi,rtl_pci,btcoexist,mac80211
retpoline:      Y
intree:         Y
name:           rtl8821ae
vermagic:       5.8.0-49-generic SMP mod_unload modversions 
sig_id:         PKCS#7
signer:         Build time autogenerated kernel key
sig_key:        1A:D5:E6:56:CF:B6:5E:AF:60:74:90:89:34:8C:97:0F:89:36:10:FB
sig_hashalgo:   sha512
signature:      2C:62:21:33:F2:14:BA:C9:6D:A9:71:6F:92:6D:DE:4C:F5:B7:57:C5:
        BE:A2:F1:61:99:31:DE:15:3B:E2:42:41:FA:15:1D:2D:24:6F:6F:C6:
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        FC:A4:96:94:EF:F4:C1:9F:63:E8:E9:83:2B:CF:DC:28:38:F6:86:C4:
        20:7C:C6:8E:F7:64:CE:D9:B0:F1:19:D8:E2:1F:EB:77:3D:24:C3:93:
        23:FC:69:16:DA:27:64:6F:92:88:91:EA:25:FF:BB:F1:30:19:0F:74:
        68:C1:EB:C1:F0:A5:2C:F7:F4:03:30:72:50:28:EB:54:F0:84:F6:17:
        60:27:3F:54:89:E1:25:A8:07:12:AC:0B
parm:           swenc:Set to 1 for software crypto (default 0)
 (bool)
parm:           ips:Set to 0 to not use link power save (default 1)
 (bool)
parm:           swlps:Set to 1 to use SW control power save (default 0)
 (bool)
parm:           fwlps:Set to 1 to use FW control power save (default 1)
 (bool)
parm:           msi:Set to 1 to use MSI interrupts mode (default 1)
 (bool)
parm:           aspm:Set to 1 to enable ASPM (default 1)
 (int)
parm:           debug_level:Set debug level (0-5) (default 0) (int)
parm:           debug_mask:Set debug mask (default 0) (ullong)
parm:           disable_watchdog:Set to 1 to disable the watchdog (default 0)
 (bool)
parm:           int_clear:Set to 0 to disable interrupt clear before set (default 1)
 (bool)

Now the output of well behaving Linux Mint:

mint@mint:~/Desktop$ sudo lshw -class network
  *-network                 
       description: Wireless interface
       product: RTL8812AE 802.11ac PCIe Wireless Network Adapter
       vendor: Realtek Semiconductor Co., Ltd.
       physical id: 0
       bus info: pci@0000:02:00.0
       logical name: wlp2s0
       version: 01
       serial: xx:xx:xx:xx:xx:xx
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
       configuration: broadcast=yes driver=rtl8821ae driverversion=5.4.0-58-generic firmware=N/A ip=xx.xx.xx.xx latency=0 link=yes multicast=yes wireless=IEEE 802.11
       resources: irq:159 ioport:e000(size=256) memory:df400000-df403fff

mint@mint:~/Desktop$ lsmod | grep rtl8821ae
rtl8821ae             233472  0
btcoexist             155648  1 rtl8821ae
rtl_pci                28672  1 rtl8821ae
rtlwifi                90112  3 rtl_pci,rtl8821ae,btcoexist
mac80211              843776  3 rtl_pci,rtl8821ae,rtlwifi

mint@mint:~$ modinfo rtl8821ae
filename:       /lib/modules/5.4.0-58-generic/kernel/drivers/net/wireless/realtek/rtlwifi/rtl8821ae/rtl8821ae.ko
firmware:       rtlwifi/rtl8821aefw_29.bin
firmware:       rtlwifi/rtl8821aefw.bin
description:    Realtek 8821ae 802.11ac PCI wireless
license:        GPL
author:         Realtek WlanFAE    
srcversion:     A8B43BD1DD5C4F8EC9C4F6A
alias:          pci:v000010ECd00008821sv*sd*bc*sc*i*
alias:          pci:v000010ECd00008812sv*sd*bc*sc*i*
depends:        rtlwifi,rtl_pci,btcoexist,mac80211
retpoline:      Y
intree:         Y
name:           rtl8821ae
vermagic:       5.4.0-58-generic SMP mod_unload 
sig_id:         PKCS#7
signer:         Build time autogenerated kernel key
sig_key:        4F:99:95:CB:A3:36:65:3E:1E:5A:30:73:58:12:C3:10:81:02:EA:FF
sig_hashalgo:   sha512
signature:      04:58:B3:93:74:BB:47:4C:44:EC:B9:B4:BF:41:D8:2F:78:10:5E:74:
        CD:E2:93:42:71:D7:48:C7:ED:DA:9C:80:00:BB:DF:99:2A:44:0C:CB:
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        A9:49:EA:05:BD:27:C6:01:1D:83:48:03:F5:B1:08:DA:86:0F:F8:68:
        BB:7E:6D:01:76:36:D1:EE:B2:F2:72:D2:9F:E6:12:E4:77:DF:5A:1C:
        E4:9F:3E:14:62:DF:8F:D5:2A:A6:04:88:39:07:6E:BB:78:5A:74:2B:
        F5:D3:70:56:2F:D1:09:2C:B7:48:88:FF
parm:           swenc:Set to 1 for software crypto (default 0)
 (bool)
parm:           ips:Set to 0 to not use link power save (default 1)
 (bool)
parm:           swlps:Set to 1 to use SW control power save (default 0)
 (bool)
parm:           fwlps:Set to 1 to use FW control power save (default 1)
 (bool)
parm:           msi:Set to 1 to use MSI interrupts mode (default 1)
 (bool)
parm:           aspm:Set to 1 to enable ASPM (default 1)
 (int)
parm:           debug_level:Set debug level (0-5) (default 0) (int)
parm:           debug_mask:Set debug mask (default 0) (ullong)
parm:           disable_watchdog:Set to 1 to disable the watchdog (default 0)
 (bool)
parm:           int_clear:Set to 0 to disable interrupt clear before set (default 1)
 (bool)

Looks like driver name matches. And driver version gives me a clue that it is a driver from the kernel. While driver module size (according to lsmod) is equal and the driver version is greater for Ubuntu, how comes it is so slow on any distro but Mint? What else can I check to figure out the difference and how can I enable fast Wi-Fi on any other distro? With Linux Mint now I know for sure that it is possible. UPD: added modinfo output. The srcversion differs (as expected). The Linux Mint kernel/driver version is older. If it is a regression in newer Realtek driver/kernel, what is the best place to submit a bug report? UPD2: If I update linux Kernel from 5.4 to 5.8, wifi becomes slow. Looks like I need to submit a kernel bug. But before it I would like to check if the latest stable kernel (5.11) have the problem.

I've been trying to install the rtl8821ce driver for my linux mint laptop. So far, the instructions I've been following make sense, but when I try to run sudo make or just make I get the following error message:

make ARCH=x86_64 CROSS_COMPILE= -C /lib/modules/4.15.0-54-generic/build M=/home/hudson/Downloads/rtl8821ce  modules
make[1] : Entering directory '/usr/src/linux-headers-4.15.0-54-generic'
/home/hudson/Downloads/rtl8821ce/Makefile:2157: home/hudson/Downloads/rtl8821ce/hal/phydm/phydm.mk: No such file or directory
/home/hudson/Downloads/rtl8821ce/Makefile:2166: home/hudson/Downloads/rtl8821ce/rtl8821c.mk: No such file or directory
make: *** No rule to make target 'home/hudson/Downloads/rtl8821ce/rtl8821c.mk'.  Stop.
Makefile:1552: recipe for target '_module_/home/hudson/Downloads/rtl8821ce' failed
make[1] : *** [_module_/home/hudson/Downloads/rtl8821ce] Error 2
make[1] : Leaving directory '/usr/src/linux-headers-4.15.0-54-generic'
Makefile:2237: recipe for target 'modules' failed
make: *** [modules] Error 2

I'm using this guide

I just installed Mint 18. What I have already tried: - disabling power management: did not help - installing lwfingers driver: broke everything, The device is now listed as UNCLAIMED when I run lshw and won't show up on ifconfig at all - installing Pilot6's DKMS: did not help. Device is still UNCLAIMED. sudo rmmod rtl8723be returns this: rmmod: ERROR: Module rtl8723be is not currently loaded sudo modprobe -v rtl8723be returns this: install /bin/false modprobe: ERROR: ../libkmod/libkmod-module.c:977 command_do() Error running install command for rtlwifi modprobe: ERROR: could not insert 'rtl8723be': Operation not permitted Secure Boot is disabled in BIOS, so this can't be it. PS.: Kernel is 4.4.0-34. I also deleted the rtl8723be.conf and rebooted again, but only after everything broke, and I tried all steps again afterwards.

I am beginner in Linux. I know that this question has been posted a lot, but even after following given solution(s) I am not able to install the required driver for my WiFi adaptor.
This is what I am getting on running the following commands
lspci :

00:00.0 Host bridge: Intel Corporation Xeon E3-1200 v6/7th Gen Core Processor Host Bridge/DRAM Registers (rev 08)
00:02.0 VGA compatible controller: Intel Corporation UHD Graphics 620 (rev 07)
00:04.0 Signal processing controller: Intel Corporation Xeon E3-1200 v5/E3-1500 v5/6th Gen Core Processor Thermal Subsystem (rev 08)
00:08.0 System peripheral: Intel Corporation Xeon E3-1200 v5/v6 / E3-1500 v5 / 6th/7th Gen Core Processor Gaussian Mixture Model
00:14.0 USB controller: Intel Corporation Sunrise Point-LP USB 3.0 xHCI Controller (rev 21)
00:14.2 Signal processing controller: Intel Corporation Sunrise Point-LP Thermal subsystem (rev 21)
00:16.0 Communication controller: Intel Corporation Sunrise Point-LP CSME HECI #1 (rev 21)
00:17.0 SATA controller: Intel Corporation Sunrise Point-LP SATA Controller [AHCI mode] (rev 21)
00:1c.0 PCI bridge: Intel Corporation Sunrise Point-LP PCI Express Root Port #5 (rev f1)
00:1c.5 PCI bridge: Intel Corporation Sunrise Point-LP PCI Express Root Port #6 (rev f1)
00:1f.0 ISA bridge: Intel Corporation Intel(R) 100 Series Chipset Family LPC Controller/eSPI Controller - 9D4E (rev 21)
00:1f.2 Memory controller: Intel Corporation Sunrise Point-LP PMC (rev 21)
00:1f.3 Audio device: Intel Corporation Sunrise Point-LP HD Audio (rev 21)
00:1f.4 SMBus: Intel Corporation Sunrise Point-LP SMBus (rev 21)
01:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller (rev 15)
02:00.0 Network controller: Realtek Semiconductor Co., Ltd. Device d723

iwconfig :

enp0s20f0u3  no wireless extensions.

eno1      no wireless extensions.

lo        no wireless extensions.

lshw -C network :

*-network                 
       description: Ethernet interface
       product: RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller
       vendor: Realtek Semiconductor Co., Ltd.
       physical id: 0
       bus info: pci@0000:01:00.0
       logical name: eno1
       version: 15
       serial: 80:ce:62:10:94:1c
       size: 10Mbit/s
       capacity: 1Gbit/s
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress msix bus_master cap_list ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd 1000bt 1000bt-fd autonegotiation
       configuration: autonegotiation=on broadcast=yes driver=r8169 driverversion=2.3LK-NAPI duplex=half firmware=rtl8168h-2_0.0.2 02/26/15 latency=0 link=no multicast=yes port=MII speed=10Mbit/s
       resources: irq:16 ioport:4000(size=256) memory:b1104000-b1104fff memory:b1100000-b1103fff
  *-network UNCLAIMED
       description: Network controller
       product: Realtek Semiconductor Co., Ltd.
       vendor: Realtek Semiconductor Co., Ltd.
       physical id: 0
       bus info: pci@0000:02:00.0
       version: 00
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress cap_list
       configuration: latency=0
       resources: ioport:3000(size=256) memory:b1000000-b100ffff
  *-network
       description: Ethernet interface
       physical id: 3
       logical name: enp0s20f0u3
       serial: ca:f1:2b:53:09:58
       capabilities: ethernet physical
       configuration: broadcast=yes driver=rndis_host driverversion=22-Aug-2005 firmware=RNDIS device ip=192.168.42.58 link=yes multicast=yes

It would be really helpful if someone could guide me in installing the correct driver.
Thanks for reading.

I am trying to install my wifi card driver on RHEL 8 for the 8821CE. I am temporarily using an 88XXau for a usb wifi adapter. I've been looking for a solution for a while and came across two main git repos: https://github.com/lwfinger/rtlwifi_new/tree/rtw88 https://github.com/tomaspinho/rtl8821ce/ the rtw88 still doesn't support the 8821CE Card as far as I can tell. I managed to install the /tomaspinho dkms module after editing the code and following the issues section to solve compilation problems related to kernel version: https://github.com/tomaspinho/rtl8821ce/issues?q=centos This basically involved changing some ifdef definitions to suit the old kernel that is using recent or backported code to my knowledge. Now I am at a point where the dkms module installed correctly and I can see the module loaded in lsmod output, but the card is still not detected and I wonder what I can do from this point forward. Thank you in advance for your help. lsmod: lsmod | grep 8821 8821ce 2023424 0 cfg80211 806912 2 88XXau,8821ce kernel: uname -r 4.18.0-193.1.2.el8_2.x86_64 dmesg: dmesg | grep 8821 [ 0.758821] pci_bus 0000:00: root bus resource [mem 0xfee00000-0xffffffff window] [ 3.187034] 8821ce: loading out-of-tree module taints kernel. [ 3.218784] rtl8821ce 0000:02:00.0: enabling device (0000 -> 0003) [ 3.248873] Modules linked in: crc32_pclmul(+) 8821ce(OE+) 88XXau(OE+) crc32c_intel amd_iommu_v2 gpu_sched i2c_algo_bit ttm hid_logitech_hidpp drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops cfg80211 nvme drm ghash_clmulni_intel serio_raw r8169 nvme_core rfkill realtek pinctrl_amd hid_logitech_dj dm_mirror dm_region_hash dm_log dm_mod [ 3.248981] ? rtw_chbw_to_freq_range+0x40/0x96 [8821ce] [ 3.249021] ? rtw_is_dfs_ch+0x34/0x70 [8821ce] [ 3.249067] ? rtw_regd_apply_flags+0xc9/0xda [8821ce] [ 3.249113] rtw_wiphy_register+0x1e/0x20 [8821ce] [ 3.249159] rtw_cfg80211_ndev_res_register+0x11/0x17 [8821ce] [ 3.249203] rtw_os_ndev_register+0xf2/0x157 [8821ce] [ 3.249248] rtw_os_ndevs_register+0x9e/0xce [8821ce] [ 3.249292] rtw_os_ndevs_init+0x24/0x3a [8821ce] [ 3.249334] rtw_drv_init+0x4f/0xac [8821ce] [ 3.249389] rtw_drv_entry+0x48/0x1000 [8821ce] [ 3.249485] WARNING: CPU: 6 PID: 528 at /var/lib/dkms/rtl8821ce/v5.5.2_34066.20200325/build/os_dep/linux/os_intfs.c:1681 rtw_os_ndev_register+0x64/0x157 [8821ce] [ 3.249485] Modules linked in: crc32_pclmul(+) 8821ce(OE+) 88XXau(OE+) crc32c_intel amd_iommu_v2 gpu_sched i2c_algo_bit ttm hid_logitech_hidpp drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops cfg80211 nvme drm ghash_clmulni_intel serio_raw r8169 nvme_core rfkill realtek pinctrl_amd hid_logitech_dj dm_mirror dm_region_hash dm_log dm_mod [ 3.249537] RIP: 0010:rtw_os_ndev_register+0x64/0x157 [8821ce] [ 3.249589] rtw_os_ndevs_register+0x9e/0xce [8821ce] [ 3.249632] rtw_os_ndevs_init+0x24/0x3a [8821ce] [ 3.249675] rtw_drv_init+0x4f/0xac [8821ce] [ 3.249722] rtw_drv_entry+0x48/0x1000 [8821ce] [ 3.258088] WARNING: CPU: 6 PID: 528 at /var/lib/dkms/rtl8821ce/v5.5.2_34066.20200325/build/os_dep/linux/os_intfs.c:3141 rtw_os_ndevs_register+0xa6/0xce [8821ce] [ 3.258090] Modules linked in: crct10dif_pclmul(+) crc32_pclmul 8821ce(OE+) 88XXau(OE+) crc32c_intel amd_iommu_v2 gpu_sched i2c_algo_bit ttm hid_logitech_hidpp drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops cfg80211 nvme drm ghash_clmulni_intel serio_raw r8169 nvme_core rfkill realtek pinctrl_amd hid_logitech_dj dm_mirror dm_region_hash dm_log dm_mod [ 3.258154] RIP: 0010:rtw_os_ndevs_register+0xa6/0xce [8821ce] [ 3.258215] rtw_os_ndevs_init+0x24/0x3a [8821ce] [ 3.258262] rtw_drv_init+0x4f/0xac [8821ce] [ 3.258319] rtw_drv_entry+0x48/0x1000 [8821ce] [ 10.280025] Bluetooth: hci0: rtl: examining hci_ver=08 hci_rev=000c lmp_ver=08 lmp_subver=8821 [ 10.280028] Bluetooth: hci0: rtl: loading rtl_bt/rtl8821c_config.bin [ 10.283364] Bluetooth: hci0: rtl: loading rtl_bt/rtl8821c_fw.bin [ 21.489998] dm_crypt amdgpu crct10dif_pclmul crc32_pclmul 8821ce(OE) 88XXau(OE) crc32c_intel amd_iommu_v2 gpu_sched i2c_algo_bit ttm hid_logitech_hidpp drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops cfg80211 nvme drm ghash_clmulni_intel serio_raw r8169 nvme_core rfkill realtek pinctrl_amd hid_logitech_dj dm_mirror dm_region_hash dm_log dm_mod ifconfig(wlp4s0f3u2 is my usb wifi adapter): ifconfig -a eno1: flags=4099 mtu 1500 ether f8:b4:6a:b5:fb:23 txqueuelen 1000 (Ethernet) RX packets 0 bytes 0 (0.0 B) RX errors 0 dropped 0 overruns 0 frame 0 TX packets 0 bytes 0 (0.0 B) TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0 lo: flags=73 mtu 65536 inet 127.0.0.1 netmask 255.0.0.0 inet6 ::1 prefixlen 128 scopeid 0x10 loop txqueuelen 1000 (Local Loopback) RX packets 6454 bytes 443527 (433.1 KiB) RX errors 0 dropped 0 overruns 0 frame 0 TX packets 6454 bytes 443527 (433.1 KiB) TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0 virbr0: flags=4099 mtu 1500 inet 192.168.122.1 netmask 255.255.255.0 broadcast 192.168.122.255 ether 52:54:00:74:aa:45 txqueuelen 1000 (Ethernet) RX packets 0 bytes 0 (0.0 B) RX errors 0 dropped 0 overruns 0 frame 0 TX packets 0 bytes 0 (0.0 B) TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0 virbr0-nic: flags=4098 mtu 1500 ether 52:54:00:74:aa:45 txqueuelen 1000 (Ethernet) RX packets 0 bytes 0 (0.0 B) RX errors 0 dropped 0 overruns 0 frame 0 TX packets 0 bytes 0 (0.0 B) TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0 wlp4s0f3u2: flags=4163 mtu 2312 inet 192.168.2.22 netmask 255.255.255.0 broadcast 192.168.2.255 inet6 fe80::e1d3:1071:71d9:6b63 prefixlen 64 scopeid 0x20 ..... I can see the card with this command, but I am not sure if it is due to the driver or not: lshw -C network *-network UNCLAIMED description: Network controller product: RTL8821CE 802.11ac PCIe Wireless Network Adapter vendor: Realtek Semiconductor Co., Ltd. physical id: 0 bus info: pci@0000:02:00.0 version: 00 width: 64 bits clock: 33MHz capabilities: cap_list configuration: latency=0 resources: ioport:f000(size=256) memory:fe900000-fe90ffff **Update** Since I am trying different drivers, I am blacklisting them at /etc/modprob.d to make sure only one loads at a time, please let me know if this is enough I opened an issue at rtw88(https://github.com/lwfinger/rtlwifi_new/issues/608) , they confirm the firmware was missing and added that to the repo, but this created an new issue: [ 12.378158] rtw_8821ce 0000:02:00.0: Firmware version 24.5.0, H2C version 12 [ 12.404834] rtw_8821ce 0000:02:00.0: rfe 2 isn't supported [ 12.404937] rtw_8821ce 0000:02:00.0: failed to setup chip efuse info [ 12.404939] rtw_8821ce 0000:02:00.0: failed to setup chip information **Update 2** This has been resolved with rtw88 driver by lwfinger after his updates to the code base. the driver works as intended now for the 8821ce!

I am trying to make a Wi-Fi USB adapter working, to no avail. The dongle is a TP-Link WN821N, which has a Realtek rtl8192eu chip. I cannot change it and will soon loose my wired connection due to choices of my employer. When inserted, I get the following output from dmesg:

[12881.857485] usb 1-1.6: new high-speed USB device number 7 using ehci-pci
[12881.970614] usb 1-1.6: New USB device found, idVendor=2357, idProduct=0107, bcdDevice= 2.00
[12881.970617] usb 1-1.6: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[12881.970618] usb 1-1.6: Product: 802.11n NIC
[12881.970619] usb 1-1.6: Manufacturer: Realtek
[12881.970620] usb 1-1.6: SerialNumber: 00e04c000001

and here is the relevant output of usb-devices:

$ usb-devices|grep -C 4 Realtek
T:  Bus=01 Lev=02 Prnt=02 Port=05 Cnt=03 Dev#=  7 Spd=480 MxCh= 0
D:  Ver= 2.10 Cls=00(>ifc ) Sub=00 Prot=00 MxPS=64 #Cfgs=  1
P:  Vendor=2357 ProdID=0107 Rev=02.00
S:  Manufacturer=Realtek
S:  Product=802.11n NIC
S:  SerialNumber=00e04c000001
C:  #Ifs= 1 Cfg#= 1 Atr=e0 MxPwr=500mA
I:  If#=0x0 Alt= 0 #EPs= 5 Cls=ff(vend.) Sub=ff Prot=ff Driver=(none)

however there's no network interface coming up

$ lspci -knn |grep -i net -A2
00:19.0 Ethernet controller : Intel Corporation 82579LM Gigabit Network Connection [8086:1502] (rev 04)
Subsystem: Intel Corporation 82579LM Gigabit Network Connection (Lewisville) [8086:2008]
Kernel driver in use: e1000e
Kernel modules: e1000e

also, ip a only shows the ethernet interface, and iw dev has no output. My uninformed guess is that the system cannot find a driver for this particular dongle. I do have the non-free firmware-realtek package installed:

$ dpkg -l|grep realtek
ii  firmware-realtek                              20190114-2                              all          Binary firmware for Realtek wired/wifi/BT adapters

and there should be something related to rtl8192eu inside:

$ dpkg -L firmware-realtek |grep rtl8192eu
/lib/firmware/rtl_bt/rtl8192eu_fw.bin
/lib/firmware/rtlwifi/rtl8192eu_nic.bin
/lib/firmware/rtlwifi/rtl8192eu_wowlan.bin

$ apt-cache show firmware-realtek|grep -i rtl8192eu
* Realtek RTL8192EU Bluetooth firmware (rtl_bt/rtl8192eu_fw.bin)
* Realtek RTl8192EU non-WoWLAN firmware (rtlwifi/rtl8192eu_nic.bin)
* Realtek RTl8192EU WoWLAN firmware (rtlwifi/rtl8192eu_wowlan.bin)

$ grep -r rtl8192eu /lib/modules/4.19.0-20-amd64/
Binary file /lib/modules/4.19.0-20-amd64/kernel/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu.ko matches

however I do not have a module named rtl8192eu:

$ sudo modprobe rtl8192eu
modprobe: FATAL: Module rtl8192eu not found in directory /lib/modules/4.19.0-20-amd64

and while I can load rtl8xxxu instead, it still does not make any new interface appear, both lspci and ip a keep showing only ethernet, and iw dev shows nothing. I am now faced with a hard choice: debug this, buy another dongle with my own money, or switch jobs. - I strongly prefer a solution based on firmware-realtek, or another maintained package, over compiling drivers from github. - I am willing to upgrade to Debian 11 bullseye if needed, as I was planning to do that anyway. - I wonder if there were some installation steps where I said that I will not ever need wifi. Can you help?

I had to install a dkms package to add ethernet support to my Zorin OS (which is Ubuntu 22.04 LTS based) running on an ASUS NUC 14 Essential mini PC . This worked fine for a while but after rebooting, the ethernet connection now started showing "Cable unplugged" in the Network Settings. I've removed the cable and plugged it back in, both on the PC and the wall. I've tried the cable directly with another PC and it works fine, so I'm sure the cable is fine. lspci --nnk shows: 1:00.0 Ethernet controller : Realtek Semiconductor Co., Ltd. RTL8125 2.5GbE Controller [10ec:8125] (rev ff) Kernel driver in use: r8125 Kernel modules: r8125 ifconfig shows: enp1s0: flags=4099 mtu 1500 ether 48:21:0b:6e:ee:6c txqueuelen 1000 (Ethernet) RX packets 0 bytes 0 (0.0 B) RX errors 0 dropped 0 overruns 0 frame 0 TX packets 0 bytes 0 (0.0 B) TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0 device interrupt 18 I installed the driver using the launchpad instructions here : sudo apt install realtek-r8125-dkms dkms status shows: r8125/9.007.01, 6.8.0-57-generic, x86_64: installed (WARNING! Diff between built and installed module!) realtek-r8125/9.015.00, 6.8.0-57-generic, amd64: installed It seems that rebooting has caused some setting to change that was previously working but I'm unsure what it is. I recall that I had to add a module key that had to be entered on the first time reboot after installing the driver, but I've not been asked for that subsequently. At this point, I'm beat. I have a nice working setup so I don't want to reinstall the OS from scratch unless absolutely necessary so any suggestions would be welcome. For now I'm using the wi-fi connection which works.

I bought a new laptop, and my IT guy installed Windows 10 on it. It ran perfectly for one whole month,then updated, and went into "Not an authorized Microsoft Product" mode and locked me out. So I deleted the entire system, and installed Linux Mint. It's perfect except that it cannot detect any wireless signals. * I ran

nmcli d

and it came out with

wlan0 = lo
    wifi = Loopback
    State = unmanaged
    connection = --

* Then I tried

sudo lshw -C network

and it responded with

*-network UNCLAIMED
    description: Network controller
    product: Realtek Semiconductor Co.,Ltd.
    vendor: Realtek Semiconductor Co.,Ltd.
    physical id： 0
    bus info: pci@0000:01:00.0
    version: 00
    width: 64 bits
    clock: 33MHz
    capabilities: pm msi pciexpress cap_list
    configuration: latency=0
    resources: ioport:2000 (size=256) memory: d0600000 - d06fffff

It is my understanding that this tells me that there is hardware installed. That it is made by Realtek. However there isn't any software associated with it. It needs some software drivers to make it work. At least, that is what I think. So I tried to find out what kind of software drivers I could use, and so I searched the internet (on a different computer. Remember this LinuxMint computer has no internet at all. Not even a CAT patch connector) and came up with a number of pages where people had this same problem. In general, every single one of them says use some version of one of these commands:

git clone -b v5.6.4.2 https://github.com/aircrack-ng/rtl8812au.git  cd rtl*
wget -N -t 5 T 10 https://github.com/ubantuForums/wireless-info  && chmod +X wireless-info && ./wireless-info

None of these solutions will work for me simply because I have no internet. I have to get the internet first, then I can download and install the driver. So all these suggestions of using this command, or plugging in a patch cable to access the internet is not working for me. My laptop does not have a female connector for a patch cable. And I need a driver. I think what I need to do is perform these tasks manually without internet access. That is to say, get the file, put it on a USB, then install the file in (for example) the downloads directory and then install it from there. Like this maybe... 1. Get on the internet (on a different computer) and obtain the rtl8812au or rtl8812ce file (I still don't know which one to use.) 2. Put it on a USB. 3. Extract it to the LinuxMint computer and put it into the downloads folder. 4. Then run some command that looks something like this, maybe...

cd downloads
    cd rtl8812au . X . X . X. (whatever the version is)
    make
    sudo make install
    sudo service Network Manager restart

I think. I am not a Linux expert, and I only started learning this week. But It makes sense to me. I have been installing Microsoft windows drivers for decades, so this must be similar.... right? Oh Nooooo! I found websites that hold these drivers... * https://gnab/rtl8812au * https://aircrack-ng/rtl8812au * https://gordboy/rtl8812au * https://tomaspinho/rtl8812ce But, you know, when I get to those websites, oh my goodness! Where are the files? When I read the internet comments they say "go to the pages XXXXX, and get the file, extract the ZIP, and install". Not so easy. Which is which, what are the files? As best I can tell, I am supposed to get the code directly. Compile it myself, make a file, ZIP the file and then try to install. That can't be right, can it? So obviously, I am all frustrated and confused, and probably look like some stupid kid to all you grizzly old coders out there, but it's all new to me. It's all strange to me, and you know, if I could get get over this hurtle, I think that I could really start loving this system... playing with it. doing things. It appeals to me. But first I need to get my wifi enabled. So I need youse guys help in this. I have one computer running Chinese Windows 10 that connects to the internet. I have some USB memory sticks. I have a new laptop with LunixMint ready to run, and I am all winning to make this thing work. So here's what I need to solve this problem: * Instructions that a newbie like myself can understand. * A URL where to get whatever files I need, what to get, how to get it. * Installation instructions. Do you all think that anyone can help me out on this? It would mean a lot to me.

I just installed Linux Mint 18.1 (Xfce) on my Lenovo Yoga 13. As with the 17 version my wifi card (realtek rtl8723au) did not work after installation and I tried to solve it as I did for the previous installation sudo apt-get update sudo apt-get install build-essential linux-headers-generic linux-headers-uname -r sudo apt-get install git #git cd /tmp mkdir wifi #Wifi git clone https://github.com/lwfinger/rtl8723au.git wifi #driver cd wifi make && sudo make install cd .. #/tmp sudo rm -r wifi This worked perfectly in the previous case but not now. **Edit** I have found that if I disable and re-enable the wifi in the network menu it connects for about 1 minute but then stops working again and can not find any networks. These are the responses to lsusb and rfkill list all: lsusb Bus 002 Device 004: ID 04f2:b322 Chicony Electronics Co., Ltd Bus 002 Device 003: ID 2047:0855 Texas Instruments Invensense Embedded MotionApp HID Sensor Bus 002 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 001 Device 005: ID 04f3:000a Elan Microelectronics Corp. Touchscreen Bus 001 Device 004: ID 0bda:1724 Realtek Semiconductor Corp. RTL8723AU 802.11n WLAN Adapter Bus 001 Device 003: ID 0bda:0129 Realtek Semiconductor Corp. RTS5129 Card Reader Controller Bus 001 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 004 Device 002: ID 0bc2:ab24 Seagate RSS LLC Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub . rfkill list all 0: ideapad_wlan: Wireless LAN Soft blocked: no Hard blocked: no 1: ideapad_bluetooth: Bluetooth Soft blocked: yes Hard blocked: no 2: hci0: Bluetooth Soft blocked: yes Hard blocked: no 3: phy0: Wireless LAN Soft blocked: no Hard blocked: no I have searched for tutorials to help me but I can not find one that works. How can I solve this?

The audio quality on the XPS15 9530 is god awful. The speakers sound beautiful on windows, but absolute dog on Linux. People seem to be having this issue over multiple distros, I believe it is an ongoing issue. The only bit of info I have that may be useful is that the XPS15 9530 uses the Realtek ALC3281 codec, however, there are multiple places in the kernel and throughout my system where the ALC298 is referenced, which is the chip that was used in the XPS15 9510 and 9520 (I think). THe ALC3281 does not seem to appear on any of my logs, but the ALC298 is everywhere. I hope that information is useful. This might be useful: https://www.reddit.com/r/DellXPS/commen … io_issues/ This is a kernel patch I found for the 9530, but it doesn't seem to work:https://www.spinics.net/lists/alsa-devel/msg161419.html This is a bugzilla report of people having the same issue: https://bugzilla.kernel.org/show_bug.cgi?id=217906 Kernel: 6.5.7-arch1-1 If anyone has any information that might help, please share. Please let me know if you want any more information.

I bought an Alfa AWUS1900 WLAN device for education purpose with Aircrack, because it has Linux support and some posts/reviews confirms that. Sadly I can't get the driver working in monitor mode, especially on the new 5er Kernel. ## My setup The notebook runs Ubunu 18.04.3 LTS with VirtualBox where I created a VM with the [latest Kali Linux](https://www.kali.org/downloads/) , which is 2019.3 at the time of writing. VirtualBox has the extension pack installed for USB 2 support. It runs as root for USB forwarding: ## My chipset Since I read reviews about users getting different chipsets for the same device type, I plugged the device in and verified to have the RTL8814AU chipset: root@kali:~# lsusb | grep -E "Realtek*" Bus 001 Device 002: ID 0bda:8813 Realtek Semiconductor Corp. RTL8814AU 802.11a/b/g/n/ac Wireless Adapter ## Not working drivers A snapshot was created before any driver was installed and after each non-working driver, I went back to the vanilla snapshot to have a clean system and make sure that no older driver influence the current one. ### zebulon2/rtl8814au [This driver](https://askubuntu.com/questions/981638/alfa-awus1900-driver-support/983834#983834) worked partially when using the Kali Linux snapshot image directly without upgrading packages (there are many updates avaliable). The device got detected and the network manager shows me avaliable APs as well as using nmcli dev wifi command. But the device is in managed mode: root@kali:~/rtl8814au# iw dev | grep type type managed I can't switch to monitor mode: root@kali:~/rtl8814au# airmon-ng check kill Killing these processes: PID Name 831 wpa_supplicant root@kali:~/rtl8814au# airmon-ng start wlan0 PHY Interface Driver Chipset phy0 wlan0 rtl8814au Realtek Semiconductor Corp. RTL8814AU 802.11a/b/g/n/ac ERROR adding monitor mode interface: command failed: Operation not supported (-95) Even not with ifconfig: root@kali:~/rtl8814au# ifconfig wlan0 down root@kali:~/rtl8814au# iwconfig wlan0 mode monitor Error for wireless request "Set Mode" (8B06) : SET failed on device wlan0 ; Operation not permitted. dmesg lot entry when putting in monitor mode: [ 940.905187] RTL871X: ERROR HalPwrSeqCmdParsing: Fail to polling Offset[0x6]=00 [ 940.905191] RTL871X: nolinked power save leave Some posts mentioned a bug in airmon-ng but say it should work with ifconfig. ### realtek-rtl88xxau-dkms According to [this thread in the kali forum](https://forums.kali.org/showthread.php?36296-EXTREME-WIFI-SUPPORT-Alfa-Networks-AWUS1900-WORKING) , there is a package called realtek-rtl88xxau-dkms in the repos that should contain all required drivers. So I installed his dependencies [like described here](https://forums.kali.org/showthread.php?36296-EXTREME-WIFI-SUPPORT-Alfa-Networks-AWUS1900-WORKING&p=79079#post79079) apt install dkms && apt-get install bc && apt-get install build-essential && apt-get install linux-headers-$(uname -r) then the driver package using apt-get install realtek-rtl88xxau-dkms and plugged in my usb wifi device. I'm wondering that I get some error about missing module or filename, but it's not clear for me what exactly is missing and if it's required (since it says installation completed): 88XXau.ko: Running module version sanity check. modinfo: ERROR: missing module or filename. - Original module - No original module exists within this kernel - Installation - Installing to /lib/modules/5.2.0-kali3-amd64/updates/ depmod.... DKMS: install completed. dmesg detects the new device, but after a few seconds it got disconnected: [ 1080.147957] usb 1-1: new high-speed USB device number 4 using ehci-pci [ 1080.595125] usb 1-1: New USB device found, idVendor=0bda, idProduct=8813, bcdDevice= 0.00 [ 1080.595131] usb 1-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3 [ 1080.595135] usb 1-1: Product: 802.11ac NIC [ 1080.595136] usb 1-1: Manufacturer: Realtek [ 1080.595137] usb 1-1: SerialNumber: 123456 [ 1087.695407] usb 1-1: USB disconnect, device number 4 On the first run, this was all I got. But the second approach shows also this VirtualBox error: ### aircrack-ng/rtl8812au I'm not sure if [aircrack-ng/rtl8812au](https://github.com/aircrack-ng/rtl8812au) is the same driver as the realtek-rtl88xxau-dkms apt-package, so I tried ./dkms-install.sh there but also no luck, just similar issues. Altough the snapshot of Kali Linux is outdated for several months (over 800 package updates for a vanilla installation), there seems no kernel update. The following kernel version is the same before and after updating all packages: Linux kali 5.2.0-kali2-amd64 #1 SMP Debian 5.2.9-2kali1 (2019-08-22) x86_64 GNU/Linux

I want to buy wifi adaptor/chipset which supported monitor mode and packet injection in Kali Linux. (Personally tested)Can anyone currently used any adepter for same ? Also share chipset(except Atheros chipset) which supported above functionality.

I don't understand the problem here. The rtl8821cu is installed but I cannot modprobe it into place. Is there a problem with the install process or am I missing a step. > pacman -Q | grep rtl rtl8188gu-dkms-git r12.9dec829-1 rtl8812au-dkms-git 5.13.6.r189.gd4638de-1 rtl8821cu-dkms-git 5.12.0.1853eacc28-1 rtl8xxxu-dkms-git r54.fbb6d1a-1 [stephen@carb:~] :> modprobe rtl8821cu modprobe: FATAL: Module rtl8821cu not found in directory /lib/modules/6.9.7-arch1-1 **After eyoung100 comment** `Packages (1) rtl8821cu-dkms-git-5.12.0.1853eacc28-1 ` `Total Installed Size: 36.99 MiB `Net Upgrade Size: 0.00 MiB ` ... ==> Leaving fakeroot environment. ==> Finished making: rtl8821cu-dkms-git 5.12.0.1853eacc28-1 (Mon Jul 8 12:33:34 2024) ==> Installing package rtl8821cu-dkms-git with pacman -U... ... -> Running build hook: [filesystems] -> Running build hook: [fsck] ==> WARNING: Possibly missing firmware for module: 'cfg80211' ==> Generating module dependencies ==> Creating zstd-compressed initcpio image: '/boot/initramfs-linux-fallback.img' -> Early uncompressed CPIO image generation successful ==> Initcpio image generation successful [stephen@carb:~/external/rtl8821cu-dkms-git] :> uname -r 6.9.7-arch1-1 [stephen@carb:~/external/rtl8821cu-dkms-git] :> dkms status rtl8188gu/r12.9dec829, 6.6.36-1-lts, x86_64: installed rtl8812au/5.13.6.r189.gd4638de, 6.6.36-1-lts, x86_64: installed rtl8821cu/5.12.0.1853eacc28, 6.6.36-1-lts, x86_64: installed rtl8821cu/5.12.0.1853eacc28, 6.9.7-arch1-1, x86_64: installed rtl8xxxu/r54.fbb6d1a, 6.6.36-1-lts, x86_64: installed rtl8xxxu/r54.fbb6d1a, 6.9.7-arch1-1, x86_64: installed

I have a desktop running Ubuntu Studio 22.04.1 LTS with kernel 6.2.0-1018-lowlatency, with an *LM Technologies* LM816-0648-3 Realtek 00E04C0001 802.11n NIC USB wifi adapter. *Wifi use locks the system* (display, mouse, keyboard unresponsive). By default the r8188eu driver was loaded (via dmesg), but I see the same behavior with the rtl8188fu driver. *How do I get a stable wifi connection on this device, while ensuring the machine does not crash?* -------- #### Attempted resolution *It's not a [driver conflict](https://ubuntuforums.org/showthread.php?t=2418510):* On my system lsmod showed both r8152 and r8188eu drivers active (r8152 for the motherboard ethernet not needed). I ran rmmod r8152 and added blacklist r8152 to /etc/modprobe.d/blacklist.conf; The r8152 driver is no longer active, but wifi use still crashes my system. *It's not a coincidence:* I've since run the machine for a few hours without the adapter attached; It remains responsive. Restoring the adapter and using wifi data again locks the system. *The rtl8188fu driver gives similar behavior:* I tested the rtl8188fu driver following [these installation steps](https://github.com/kelebek333/rtl8188fu) . The behavior is the same. *Related questions etc. that don't resolve this:* Many [questions](https://askubuntu.com/questions/1292580/most-recent-update-of-20-04-knocked-out-realtek-wifi-drivers-how-to-restore/1292624) deal with adapters [not working](https://unix.stackexchange.com/q/252210/134513) , rather than locking the system. Few mention this device; Many concern support for internal/onboard wifi chipsets, but it's hard to determine which apply to this USB wifi device in June of 2024. [This question](https://unix.stackexchange.com/questions/532943/connecting-the-wifi-dongle-is-freezing-the-linux-system) has the same symptoms but I don't understand [the answer](https://unix.stackexchange.com/a/552562/134513) ; [This unanswered question](https://askubuntu.com/questions/1490312/random-kernel-panic-on-ubuntu-22-04-3-raspberry-pi-2b) reports a kernel panic on an rπ with the same USB adapter, unclear if related; [This open issue on the rtl8188eu driver github](https://github.com/lwfinger/rtl8188eu/issues/312) seems similar but has no follow-up.

I’m dual-booting Windows 10 and EndeavourOS.  Somehow, Windows messes with my network card so that, when booting Linux, I can’t reach the network.  When I first encountered this, I reinstalled EndeavourOS and it was working fine again.  But only until the next Windows boot and successive Linux boot again. Also, the NIC is working fine when starting from an EndeavourOS live USB stick. That’s the NIC:

[me@pc ~]$ /usr/bin/lspci | /bin/egrep -i 'network|ethernet'
01:00.1 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller (rev 1a)

I found lots of rather old threads suggesting turning off all sorts of wake on LAN and other power settings in Win 10, tried them all but to no avail. Interestingly the NIC does seem to get a correct IP address via DHCP. Upon login to KDE, the NIC has its last DHCP config remembered, it seems:

[me@pc ~]$ ip a
1: lo:  mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
    inet6 ::1/128 scope host 
       valid_lft forever preferred_lft forever
2: enp1s0f1:  mtu 1500 qdisc fq_codel state UP group default qlen 1000
    link/ether e0:4f:43:e8:12:e3 brd ff:ff:ff:ff:ff:ff
    inet 192.168.99.10/24 brd 192.168.99.255 scope global dynamic noprefixroute enp1s0f1
       valid_lft 43007sec preferred_lft 43007sec
    inet6 fe80::48e3:71dd:df1b:797b/64 scope link noprefixroute 
       valid_lft forever preferred_lft forever
3: wlan0:  mtu 1500 qdisc noop state DOWN group default qlen 1000
    link/ether 9a:11:4e:51:2b:86 brd ff:ff:ff:ff:ff:ff permaddr 9c:fc:e8:dd:b1:2f

However, no connection to the network:

[me@pc ~]$ ping 192.168.99.10
PING 192.168.99.10 (192.168.99.10) 56(84) bytes of data.
64 bytes from 192.168.99.10: icmp_seq=1 ttl=64 time=0.031 ms
64 bytes from 192.168.99.10: icmp_seq=2 ttl=64 time=0.058 ms
64 bytes from 192.168.99.10: icmp_seq=3 ttl=64 time=0.057 ms
^C
--- 192.168.99.10 ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2053ms
rtt min/avg/max/mdev = 0.031/0.048/0.058/0.012 ms

[me@pc ~]$ ping 192.168.99.1
PING 192.168.99.1 (192.168.99.1) 56(84) bytes of data.
From 192.168.99.10 icmp_seq=1 Destination Host Unreachable
From 192.168.99.10 icmp_seq=2 Destination Host Unreachable
From 192.168.99.10 icmp_seq=3 Destination Host Unreachable
^C
--- 192.168.99.1 ping statistics ---
6 packets transmitted, 0 received, +3 errors, 100% packet loss, time 5226ms
pipe 3

[me@pc ~]$ sudo dmesg | grep r8168
[    6.133867] r8168: loading out-of-tree module taints kernel.
[    6.242244] r8168: module verification failed: signature and/or required key missing - tainting kernel
[    6.244316] r8168 Gigabit Ethernet driver 8.048.03-NAPI loaded
[    6.262759] r8168: This product is covered by one or more of the following patents: US6,570,884, US6,115,776, and US6,327,625.
[    6.264779] r8168  Copyright (C) 2020  Realtek NIC software team  
[    6.512649] r8168 0000:01:00.1 enp1s0f1: renamed from eth0
[   10.578772] r8168: enp1s0f1: link up

I also tried switching to a slightly older version of r8168 module (lts), to no avail. I remember it to work, switching back and forth between Windows and Linux, but at this time only reinstalling seems to help. Which I want to, of course, circumvent. Even if it means resetting the NIC somehow during startup or other hacks. EDIT New evidence: I configured the NIC manually via NetworkManager, and now it is constantly disconnecting and connecting again:

Apr 13 10:40:27 pc NetworkManager:   [1618303227.2299] manager: NetworkManager state is now CONNECTING
Apr 13 10:40:27 pc NetworkManager:   [1618303227.2513] device (enp1s0f1): state change: prepare -> config (reason 'none', sys-iface-state: 'managed')
Apr 13 10:40:27 pc NetworkManager:   [1618303227.2520] device (enp1s0f1): state change: config -> ip-config (reason 'none', sys-iface-state: 'managed')
Apr 13 10:40:27 pc NetworkManager:   [1618303227.2546] device (enp1s0f1): state change: ip-config -> ip-check (reason 'none', sys-iface-state: 'managed')
Apr 13 10:40:27 pc NetworkManager:   [1618303227.2587] device (enp1s0f1): state change: ip-check -> secondaries (reason 'none', sys-iface-state: 'managed')
Apr 13 10:40:27 pc NetworkManager:   [1618303227.2589] device (enp1s0f1): state change: secondaries -> activated (reason 'none', sys-iface-state: 'managed')
Apr 13 10:40:27 pc NetworkManager:   [1618303227.2596] manager: NetworkManager state is now CONNECTED_LOCAL
Apr 13 10:40:27 pc NetworkManager:   [1618303227.2605] manager: NetworkManager state is now CONNECTED_SITE
Apr 13 10:40:27 pc NetworkManager:   [1618303227.2607] policy: set 'Wired connection 1' (enp1s0f1) as default for IPv4 routing and DNS
Apr 13 10:40:27 pc NetworkManager:   [1618303227.2640] device (enp1s0f1): Activation: successful, device activated.
Apr 13 10:40:35 pc NetworkManager:   [1618303235.3135] device (enp1s0f1): carrier: link connected
Apr 13 10:40:35 pc NetworkManager:   [1618303235.3142] device (enp1s0f1): state change: activated -> unavailable (reason 'carrier-changed', sys-iface-state: 'managed')
Apr 13 10:40:35 pc NetworkManager:   [1618303235.3667] manager: NetworkManager state is now CONNECTED_LOCAL
Apr 13 10:40:35 pc NetworkManager:   [1618303235.3678] manager: NetworkManager state is now DISCONNECTED
Apr 13 10:40:40 pc NetworkManager:   [1618303240.3191] device (enp1s0f1): state change: unavailable -> disconnected (reason 'none', sys-iface-state: 'managed')
Apr 13 10:40:40 pc NetworkManager:   [1618303240.3223] policy: auto-activating connection 'Wired connection 1' (e76e5718-9a47-3733-818b-30aaa862bcf4)
Apr 13 10:40:40 pc NetworkManager:   [1618303240.3235] device (enp1s0f1): Activation: starting connection 'Wired connection 1' (e76e5718-9a47-3733-818b-30aaa862bcf4)
Apr 13 10:40:40 pc NetworkManager:   [1618303240.3238] device (enp1s0f1): state change: disconnected -> prepare (reason 'none', sys-iface-state: 'managed')
Apr 13 10:40:40 pc NetworkManager:   [1618303240.3247] manager: NetworkManager state is now CONNECTING
...start all over

So the NIC itself is working now, but only to a degree:

[me@pc ~]$ ping 192.168.99.1
PING 192.168.99.1 (192.168.99.1) 56(84) bytes of data.
ping: sendmsg: Network is unreachable
ping: sendmsg: Network is unreachable
ping: sendmsg: Network is unreachable
ping: sendmsg: Network is unreachable
From 192.168.99.8 icmp_seq=12 Destination Host Unreachable
From 192.168.99.8 icmp_seq=13 Destination Host Unreachable
From 192.168.99.8 icmp_seq=14 Destination Host Unreachable
64 bytes from 192.168.99.1: icmp_seq=15 ttl=64 time=1.65 ms
ping: sendmsg: Network is unreachable
ping: sendmsg: Network is unreachable
ping: sendmsg: Network is unreachable