I'm having freezing problems with my Debian 12 install on a Dell Latitude 7490 laptop. The screen will freeze and become unresponsive. Moving the mouse during the freeze will cause the keyboard backlight to turn back on if it's off, but nothing happens on the screen. This happens both mid-use and before login, whether in TTY or GUI, and whether in normal mode or recovery mode. I have LUKS, and I haven't noticed it happening before I enter encryption key, though. The only way around seems to be a force shutdown -> reboot, but the problem will almost always just happen again shortly after next boot. My system is honestly more or less unusable right now because of this. At first, I didn't see this happening when I was plugged into AC at work or at home, but since some of the changes that I've tried (below), freezing now seems to happen regardless of battery or AC. I've tried a number of things: 1) Update kernel from 6.1.* -> 6.12.33 via backports. 2) Update firmware drivers similarly. 3) Change BIOS settings (disabled C-States, disabled Intel SpeedShift, disabled SpeedStep, disabled TurboBoost; basically disabled every intel performance option besides multi core and hyper threading). I also have secure boot turned disabled, but that was to solve a different problem. 4) Set intel_idle.max_cstate=0 also tried setting to 1) and intel_iommu=off in GRUB_CMDLINE_LINUX_DEFAULT. Right now, I'm using bookworm with the 6.12.33 kernel from backports, Wayland, and iwd + Network manager. Here's a link to a journalctl dump from a hang: [https://paste.c-net.org/GoldbergLined](https://paste.c-net.org/GoldbergLined) The problem in [this Mint forum thread](https://forums.linuxmint.com/viewtopic.php?t=432757) seems to be quite similar to mine, but no resolution. Thanks for your help!

Just received a Sager NHx0DB,DE w/ i7-10870H CPU & NVIDIA GeForce GTX 1650 Mobile GPU. Cinnamon Mint 22.1 Xia was preinstalled by Freegeek.org a no-support community non-profit refurbisher. I installed the latest open source Nvidia video driver and rebooted as it instructed, but now it boots then stops, showing the green LinuxMint logo. How do I reboot back into the original Intel video driver, or into a safe mode. and remove that nVidia driver? Product Specs: Model: NHx0DB,DE OS: Linux Mint 22.1 Xia (Cinnamon) CPU: Intel Core i7-10750H @ 2.6 GHz / 4.4 GHz / 5 GHz Max (6 Cores + HT) RAM: 16 GB DDR4 @ 2933 MHz (16 GB + Empty) - 32 GB Max Storage: 256 GB NVMe (SK hynix BC711 HFM256GD3JX013N) GPU: • Intel UHD Graphics • NVIDIA GeForce GTX 1650 Mobile / Max-Q {snip} -- Resolved by: cycle power, then when manufacturer logo appeared, since UEFI enabled, tapped {Esc} to go to GRUB Menu, chose top item, and it loaded the Cinnamon Desktop Environment. Took several power cycles to get the {Esc} tap duration just right to avoid **grub** **grub** **grub** *all the way down...*

Some weeks ago, I updated and upgraded my Debian 11 system. My desktop environment is Cinnamon. Now, very often, the entire desktop freezes or displays strange graphical artifacts (like lines or glitches), and the system feels extremely laggy. I have to restart to fix it. What can I do to solve this problem?

I recently installed Ubuntu 18.04 in a Dell inspiron 7559. I had a lot of trouble with the installation of almost any distro but this time it seemed that everything worked just fine. The first couple of times that I closed the lid and re-opened it, everything seemed to work fine, but now it doesn't. Namely, after it resumes, opening apps by clicking them is not a posibility any more. Do you have any ideas of how I can fix this bug? Note that the laptop bares a NVIDIA card and I have installed the proprietary drivers. lspci output

00:00.0 Host bridge: Intel Corporation Skylake Host Bridge/DRAM Registers (rev 07)
00:01.0 PCI bridge: Intel Corporation Skylake PCIe Controller (x16) (rev 07)
00:01.1 PCI bridge: Intel Corporation Skylake PCIe Controller (x8) (rev 07)
00:02.0 VGA compatible controller: Intel Corporation HD Graphics 530 (rev 06)
00:04.0 Signal processing controller: Intel Corporation Skylake Processor Thermal Subsystem (rev 07)
00:14.0 USB controller: Intel Corporation Sunrise Point-H USB 3.0 xHCI Controller (rev 31)
00:14.2 Signal processing controller: Intel Corporation Sunrise Point-H Thermal subsystem (rev 31)
00:15.0 Signal processing controller: Intel Corporation Sunrise Point-H Serial IO I2C Controller #0 (rev 31)
00:16.0 Communication controller: Intel Corporation Sunrise Point-H CSME HECI #1 (rev 31)
00:17.0 SATA controller: Intel Corporation Sunrise Point-H SATA Controller [AHCI mode] (rev 31)
00:1c.0 PCI bridge: Intel Corporation Sunrise Point-H PCI Express Root Port #1 (rev f1)
00:1c.4 PCI bridge: Intel Corporation Sunrise Point-H PCI Express Root Port #5 (rev f1)
00:1c.5 PCI bridge: Intel Corporation Sunrise Point-H PCI Express Root Port #6 (rev f1)
00:1c.6 PCI bridge: Intel Corporation Sunrise Point-H PCI Express Root Port #7 (rev f1)
00:1f.0 ISA bridge: Intel Corporation Sunrise Point-H LPC Controller (rev 31)
00:1f.2 Memory controller: Intel Corporation Sunrise Point-H PMC (rev 31)
00:1f.3 Audio device: Intel Corporation Sunrise Point-H HD Audio (rev 31)
00:1f.4 SMBus: Intel Corporation Sunrise Point-H SMBus (rev 31)
02:00.0 3D controller: NVIDIA Corporation GM107M [GeForce GTX 960M] (rev a2)
04:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller (rev 10)
05:00.0 Network controller: Intel Corporation Wireless 3165 (rev 79)
06:00.0 Unassigned class [ff00]: Realtek Semiconductor Co., Ltd. RTS522A PCI Express Card Reader (rev 01)

Note that sometimes it freezes, sometimes it does not...which I find it even more weird..

I am having problems with Linux on my PC. I am facing issues with CPU usage I believe. The issue persists with short CPU spikes causing my PC to freeze for short periods of time, around 1 second. And this happens pretty randomly. Watching YouTube or a movie using VLC, using a code editor such as VS Code, or doing any small task while nothing else intensive is happening in the background causes these short CPU spikes. This also happens on the latest Ubuntu LTS release, same exact issue. If you look at the CPU History of the image below, where ever there is a bigger difference in the workload of the CPUs, that is when the PC freeze kicks in Here is a inxi -Fxz dump of my system:

System:    Host: elon Kernel: 4.15.0-58-generic x86_64 bits: 64 compiler: gcc v: 7.4.0 
           Desktop: Cinnamon 4.2.3 Distro: Linux Mint 19.2 Tina base: Ubuntu 18.04 bionic 
Machine:   Type: Desktop System: HP product: HP ENVY Desktop v: 1.01 serial:  
           Mobo: HP model: 82F1 v: 1.01 serial:  UEFI: AMI v: F.23 date: 01/29/2018 
Battery:   Device-1: hidpp_battery_0 model: Logitech Wireless Illuminated Keyboard K800 
           charge: 55% status: Discharging 
           Device-2: hidpp_battery_1 model: Logitech Wireless Mouse M510 charge: 55% 
           status: Discharging 
CPU:       Topology: Quad Core model: Intel Core i5-7400 bits: 64 type: MCP arch: Kaby Lake 
           rev: 9 L2 cache: 6144 KiB 
           flags: lm nx pae sse sse2 sse3 sse4_1 sse4_2 ssse3 vmx bogomips: 24000 
           Speed: 2193 MHz min/max: 800/3500 MHz Core speeds (MHz): 1: 912 2: 959 3: 810 4: 1015 
Graphics:  Device-1: Intel HD Graphics 630 vendor: Hewlett-Packard driver: i915 v: kernel 
           bus ID: 00:02.0 
           Display: x11 server: X.Org 1.19.6 driver: modesetting unloaded: fbdev,vesa 
           resolution: 2560x1440~60Hz 
           OpenGL: renderer: Mesa DRI Intel HD Graphics 630 (Kaby Lake GT2) v: 4.5 Mesa 19.0.8 
           direct render: Yes 
Audio:     Device-1: Intel 100 Series/C230 Series Family HD Audio 
           vendor: Hewlett-Packard Sunrise Point-H driver: snd_hda_intel v: kernel 
           bus ID: 00:1f.3 
           Sound Server: ALSA v: k4.15.0-58-generic 
Network:   Device-1: Intel Wireless 7265 driver: iwlwifi v: kernel port: f040 bus ID: 02:00.0 
           IF: wlp2s0 state: down mac:  
           Device-2: Realtek RTL8111/8168/8411 PCI Express Gigabit Ethernet 
           vendor: Hewlett-Packard driver: r8169 v: 2.3LK-NAPI port: e000 bus ID: 03:00.0 
           IF: enp3s0 state: up speed: 1000 Mbps duplex: full mac:  
Drives:    Local Storage: total: 1.03 TiB used: 50.40 GiB (4.8%) 
           ID-1: /dev/sda vendor: Samsung model: MZ7LN128HCHP-000H1 size: 119.24 GiB 
           ID-2: /dev/sdb vendor: Western Digital model: WD10EZEX-60WN4A0 size: 931.51 GiB 
           temp: 34 C 
Partition: ID-1: / size: 114.15 GiB used: 25.20 GiB (22.1%) fs: ext4 dev: /dev/sda2 
           ID-2: swap-1 size: 2.26 GiB used: 0 KiB (0.0%) fs: swap dev: /dev/dm-0 
Sensors:   System Temperatures: cpu: 43.0 C mobo: 27.8 C 
           Fan Speeds (RPM): N/A 
Info:      Processes: 231 Uptime: 15m Memory: 11.62 GiB used: 2.63 GiB (22.7%) Init: systemd 
           runlevel: 5 Compilers: gcc: 7.4.0 Shell: bash v: 4.4.20 inxi: 3.0.32 

I have no clue what could it be except for driver issues.

This happens pretty much every night. My panels are working fine. I go to bed and come back the next morning with all of my panels frozen on KDE Plasma. Sometimes my whole KDE Plasma freezes and then I normally do this and it works most of the time:

killall plasmashell
kstart plasmashell

But when only my panels are frozen, then even the above don't work. Someone recommend I do the following command, but that also didn't work:

plasmashell --replace

--- What's the correct way to restart and/or fix this issue without fully restarting my computer?

**[Help] Ubuntu 24.04 Random Freezes / Black Screen (ASUS N552VX - Dual Boot)** Hey folks, I'm struggling with an issue on my laptop and hoping someone can help. **Specs:** - Laptop: ASUS N552VX - CPU: Intel i7-6700HQ - GPU: Intel HD + NVIDIA GTX 950M (Optimus) - OS: Ubuntu 24.04 LTS (X11) — dual boot with Windows 10 **Problem:** Randomly during usage, Ubuntu either freezes completely or the screen goes black. When this happens: - Keyboard/mouse stops responding - No TTY (Ctrl+Alt+F3 doesn’t work) - I can only do a hard shutdown (holding the power button) **Things I've tried:** - Full system update (sudo apt update && sudo apt upgrade) - Switched to Intel GPU via sudo prime-select intel - Disabled PCIe AER errors by adding pci=noaer to GRUB - Using X11 instead of Wayland - Kernel: 6.8 (also tried 6.11 mainline) Still getting the same issue, often after some browsing or video playback. No issues under Windows. Any logs or configs I should check? Has anyone with a similar hybrid GPU setup faced this? Thanks!

I have been running CentOS 7 minimal on around 10 i7-8700 PCs in my organization. These machines are HP Elitedesk 800 G4 workstations (Hardware Ref. Guide ) (Maintenance and Service Guide ) (datasheet ). All work fine, except a couple which freeze randomly, requiring a hard reboot. I have looked at the var/logs/messages and dmsg but there are no errors which could potentially explain why the machine got hung. I am happy to provide more information if you need me to. PCs which freeze, and which do not freeze, are using exactly same apps for the same purpose, for local proxy use. I have checked swap usage by running vmstat with its delay and count but swap usage seems to be not exceeding the limit. # vmstat -a procs -----------memory---------- ---swap-- -----io---- -system-- ------cpu----- r b swpd free inact active si so bi bo in cs us sy id wa st 2 0 0 14922052 142620 734392 0 0 1 1 107 97 5 3 92 0 0

Firefox presents a reoccurring problem, where its graphical state suddenly stops updating. The browser doesn't outright crash; it's possible to e.g. switch tabs or write something, without anything happening visually. I have found that re-entering from the Activities overview updates the browser's display state to match the actions, but this behaviour is not consistent and does not fix the problem. Everything else on my system appears to work fine when this happens, and rebooting seems to be the only way to fix it. I initially guessed it might be due to some obscure XOrg jank, but then encountered the same problem on my Thinkpad (Debian 12/KDE/Wayland). Does anyone have any suggestions or similar experiences? Any help would be greatly appreciated. (*For reference, I'm running Firefox ESR v115.9.1 on Debian 12, with Gnome 43.9 and X11*)

While experimenting with GNU parallel I found that the following cases all hang with decreasing CPU usage on a Fedora 41 VM with 8GB RAM. Is this expected behaviour?

parallel --halt now,fail=1 --timeout 2s --memfree 30G echo ::: a b c
parallel --halt now,fail=1 --timeout 2s --memsuspend 30G echo ::: a b c
parallel --timeout 2s --memsuspend 30G echo ::: a b c
parallel --timeout 2s --memfree 30G echo ::: a b c

I'd have expected at least the first or second command to actually timeout and exit with errorcode 3. [strace log](https://paste.centos.org/view/5d24131f ) that shows it's basically spinning and continuously reading /proc/meminfo with an awk subprocess which is in line with expected behaviour (memfreescript) even though it seems pretty wasteful every 1 second. **Why does it allow --memfree and --memsuspend values much greater than physical RAM ?** Could someone also clarify this section in the manual for --memfree. Does it mean the youngest *running* job would be killed? > If the jobs take up very different amount of RAM, GNU parallel will only start as many as there is memory > for. If less than size bytes are free, no more jobs will be started. If less than 50% size bytes are free, > the youngest job will be killed (as per --term-seq), and put back on the queue to be run later. kill_youngster_if_not_enough_mem code is relevant but isn't something I quite grasp in relation to the full GNU parallel codebase.

parallel --version GNU parallel 20241222
 uname -a Linux host 6.11.4-301.fc41.x86_64 #1 SMP PREEMPT_DYNAMIC Sun Oct 20 15:02:33 UTC 2024 x86_64 GNU/Linux

My server has 800+ days uptime, but ever since a couple weeks the **MySQL server** keeps hitting **100% CPU** and I have to restart the mysqld service. Where do I start to find out where this issue is coming from? As all the sites on my server keep freezing until I restart. I don't want to keep restarting the service every time. Sometimes it is after a couple minutes, sometimes a couple hours, sometimes a couple days. Nothing changed really. I only once updated the my.cnf file for the default character set and restarted recently, but I don't believe this is linked in any way. **--- Server details ---**
Debian 10 Buster
MySQL Version: 14.14
Average users: 150 - 200 per day
vCPU's: 4
RAM: 4GB
**my.cnf** No slow queries shown so far. [mysqld] collation_server = utf8mb4_unicode_ci character_set_server = utf8mb4 sql-mode="NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION" slow_query_log = 1 slow_query_log_file = /var/log/mysql/slow_queries.log log_queries_not_using_indexes = 'OFF' long_query_time = 5

Desktop frozen after update installation. I was able to access Teletype screen but computer will not accept password. Any suggedtion to bypass? My software did come pre-installed. https://discuss.kde.org/t/kde-neon-6-cannot-login-after-update/12341

After starting Ubuntu 24.04 over the network, I have a problem where valid_lft, after going down to 0, causes the system to freeze. valid_lft can be checked by executing the command ip a. How can I set the valid_lft parameter to forever? I don't want to execute additional commands — I just want to set it in Linux. I don't see such an option in dhcpcd. In Ubuntu 22.04, started over the network, the default value of valid_lft is set to forever.

I have a cifs mounted like this: mount.cifs -o uid=myuser,user=...,dom=... //IP/Share /some/mountpoint/ When I try to access it after period of inactivity (or when the network is inaccessible), it stucks application that for prolonged time (minutes). In the end it completes the request and unblocks the application. smbclient can easily log in and view directories, but the /some/mountpoint is waiting and waiting for minutes. How do I speedup these retries?

I'm new to linux and I've been running into some trouble. I use linux mint and sometimes (fairly often) after my laptop goes to sleep it freezes completely when it wakes up. I can't move the mouse, click, use the keyboard, or open a terminal. The only way I can get out of it is to force shutdown. I've used several different distros and they all have this problem. Is there any kind of fix to this or should I just go back to windows? Laptop model: Toshiba Satellite S50D-A Mint version: Linux Mint 18.1 Serena inxi -Fxzc0 output: System: Host: jack-pc Kernel: 4.4.0-53-generic x86_64 (64 bit gcc: 5.4.0) Desktop: Cinnamon 3.2.6 (Gtk 3.18.9-1ubuntu3.1) Distro: Linux Mint 18.1 Serena Machine: System: TOSHIBA (portable) product: Satellite S50D-A v: PSKKWC-00G005 Mobo: AMD model: VG10AD Bios: Insyde v: 1.30 date: 11/05/2013 CPU: Quad core AMD A10-5745M APU with Radeon HD Graphics (-MCP-) cache: 8192 KB flags: (lm nx sse sse2 sse3 sse4_1 sse4_2 sse4a ssse3 svm) bmips: 16769 clock speeds: max: 2100 MHz 1: 1500 MHz 2: 1800 MHz 3: 2100 MHz 4: 1500 MHz Graphics: Card-1: Advanced Micro Devices [AMD/ATI] Richland [Radeon HD 8610G] bus-ID: 00:01.0 Card-2: Advanced Micro Devices [AMD/ATI] Sun PRO [Radeon HD 8570A/8570M] bus-ID: 01:00.0 Display Server: X.Org 1.18.4 drivers: ati,radeon (unloaded: fbdev,vesa) Resolution: 1366x768@60.00hz GLX Renderer: Gallium 0.4 on AMD ARUBA (DRM 2.43.0, LLVM 3.8.0) GLX Version: 3.0 Mesa 11.2.0 Direct Rendering: Yes Audio: Card-1 Advanced Micro Devices [AMD] FCH Azalia Controller driver: snd_hda_intel bus-ID: 00:14.2 Card-2 Advanced Micro Devices [AMD/ATI] Trinity HDMI Audio Controller driver: snd_hda_intel bus-ID: 00:01.1 Sound: Advanced Linux Sound Architecture v: k4.4.0-53-generic Network: Card-1: Realtek RTL8188EE Wireless Network Adapter driver: rtl8188ee port: 3000 bus-ID: 02:00.0 IF: wlp2s0 state: up mac: Card-2: Qualcomm Atheros QCA8172 Fast Ethernet driver: alx port: 2000 bus-ID: 03:00.0 IF: enp3s0 state: down mac: Drives: HDD Total Size: 500.1GB (2.7% used) ID-1: /dev/sda model: WDC_WD5000BPVX size: 500.1GB temp: 26C Partition: ID-1: / size: 452G used: 5.9G (2%) fs: ext4 dev: /dev/sda1 ID-2: swap-1 size: 7.73GB used: 0.00GB (0%) fs: swap dev: /dev/dm-0 RAID: No RAID devices: /proc/mdstat, md_mod kernel module present Sensors: System Temperatures: cpu: 36.1C mobo: N/A gpu: 33.0,N/A Fan Speeds (in rpm): cpu: N/A Info: Processes: 269 Uptime: 11:51 Memory: 909.9/7178.3MB Init: systemd runlevel: 5 Gcc sys: 5.4.0 Client: Shell (bash 4.3.461) inxi: 2.2.35

This is to me a general question, since I saw many questions about Linux freezing (didn't help to apply the answers, including the "Raising Skinny Elephants Is Utterly Boring" keystrokes combinations sequence). It should be general also because it used to happen to me on Ubuntu (the version "LTS" up to date in 2016) and also on Centos 7, which I installed about one year ago, on the same desktop, a 2011 HP Compaq 8000 Elite. Basically everything is frozen, it appears there is no disk activity. Only the mouse pointer moves correctly, but clicks have no effect. Up to now I am obliged to reboot the box. Any suggestions about how to unfreeze the box in these cases and possibly search and suppress the reason?

I recently downloaded Ubuntu Linux on my laptop as dual boot. Ubuntu was freezing everytime after login ( it can work for a max of 3 mins before freezing). It completely freezes including keyboard, mouse and only solution is to force the computer to shut down. The problem resolved itself on its own. Unfortunately because I allocated too little disk space for Linux I had to uninstall and reinstall it. I tried doing system update but I cannot reach that point before the computer freezes. It is now freezing again and I'm in a hurry I need to work on it today! Is there anything I could do?

Kali Linux 2023 snapshot (USB persistent built directly on USB in QEMU) ASUS VivoBook (16 GB RAM, 19 MB Front Side Bus) I'm trying to set up a Kali live USB to run Fluxion (so I have to use Kali more or less). Problem: kali is booting extremely slow. 10-15minutes from persistence boot menu selection to full boot up once booted up everything works quickly until a new window is opened or new program is started, then everything freezes for 5-10 minutes. sync will not complete until whatever cycle is processing finishes. after new window or program is started completely (5-10 minutes) then everything works quickly until one of the programs begins to process something or a new window/program is started; then system hangs again for 5-10 min. This problem does not occur in LIVE mode, only in persistent live mode. It happens with a clean fresh install directly from the recent snapshot and occurs in both the XFCE and GNOME

I've experienced total system freeze while checking if files where copied correctly by

diff -rq [INTERNAL HDD] [USB HDD]

This happened twice, always while running the diff. On the second occasion I had system monitor up and RAM was about 30% filled and CPU was also empty. I've tried Alt+SysRq+REISUB to reboot safely but the system was totally unresponsive. Suspecting RAM, I've conducted memtest without any issue. Do someone have any idea while this happens? (I'm a bit reluctant to test it further much as the data are valuable). The size of the data is ~4T in ~60k files. Some system info

INTERNAL
description: EXT4 volume
capabilities: journaled extended_attributes large_files huge_files dir_nlink recover 64bit extents ext4 ext2 initialized
configuration: ansiversion=5 created=2024-02-28 16:06:38 filesystem=ext4 label=18T lastmountpoint=/media/marek/18T logicalsectorsize=512 modified=2025-03-20 08:38:08 mount.fstype=ext4 mount.options=rw,nosuid,nodev,relatime,errors=remount-ro mounted=2025-03-20 08:38:08 sectorsize=4096 state=mounted

# for some reason, lshw reports this hdd to be "size: 380GiB"
# while lsblk reports (expected)
# sda                        8:0    0  16,4T  0 disk   /media/marek/18T


USB
filesystem=ntfs label=Elements mount.fstype=ntfs3 mount.options=rw,nosuid,nodev,relatime,uid=1000,gid=1000,iocharset=utf8 name=Elements state=mounted


SYSTEM
Ubuntu 24.04.2 LTS
Intel® Core™ i7-5820K × 12
RAM 32,0 GiB
Linux 6.8.0-55-generic

I have an embedded device/system with i.MX8M mini processor running on a Debian based Linux with kernel 6.12.8. If I run a specific software on that device, the system freezes only after 1-3 days of runtime. Originally the device was reset by the watchdog timer, but when disabling the watchdog, we see the "freeze" state. Yes, the watchdog functionality works OK :-) The problem **only** happens with this (rather complex) piece of software. Running other programs or software for weeks, we have never seen such a freezing (I do not have access to the source code of this software). There is no kernel fault displayed on the serial terminal, nor any kernel fault in the log files. In the freezed state, the system does not react to any connection attempt. My question: How can a user code possibly trigger such an observed system freeze state without seeing a kernel panic or anything reported by the kernel? Or the other way around: If one asks you to write a user code that freezes a Linux system completely without showing any kernel message, what code would that be?