Unix & Linux Stack Exchange
Q&A for users of Linux, FreeBSD and other Unix-like operating systems
Latest Questions
0
votes
2
answers
71
views
Wait for file to be able to be opened with systemd
I am trying to use systemd to spin up a ROS2 system on startup that needs to talk to a microcontroller. I have udev rules to create named links to the serial device based on serial number, device id, etc. A path unit configuration waits for the path to exist, and then starts the service, which also...
I am trying to use systemd to spin up a ROS2 system on startup that needs to talk to a microcontroller. I have udev rules to create named links to the serial device based on serial number, device id, etc.
A path unit configuration waits for the path to exist, and then starts the service, which also waits for the .device file for the path to exist before starting.
This works fine, but when the launch file is called and ROS2 attempts to open the connection it always gets a "Device or resource busy" error. I tried implementing a retry system for this, but this approach doesn't work well with how we currently have the serial implementation written, so I wanted to ask if anyone had ideas about another solution?
Here is the .service file:
[Unit]
Description=Start PRIMROSE ROS2 Stack
After=dev-MCIU0.device
Requires=dev-MCIU0.device
[Service]
User=pstdl
Group=pstdl
ExecStart=/bin/bash -c '/home/pstdl/Primrose-onboard/src/control/bringup/config/Primrose-startup.sh'
Restart=on-failure
RestartSec=2s
[Install]
WantedBy=multi-user.target[Unit]
Description= Watch /dev for MCIU0 to appear and then start the PRIMROSE ROS2 stack
After=network-online.target
[Path]
PathExists=/dev/MCIU0
[Install]
WantedBy=multi-user.target#SUBSYSTEM=="tty",ENV{ID_PATH}=="platform-3610000.usb-usb-0:2.1:1.0",SYMLINK+="rplidar0"
#SUBSYSTEM=="tty",ENV{ID_PATH}=="platform-3610000.usb-usb-0:2.4:1.0",SYMLINK+="vectornav0"
#SUBSYSTEM=="tty",ENV{ID_PATH}=="platform-3610000.usb-usb-0:2.3:1.0",SYMLINK+="zedfp90"
# backup of the local rules, placing this file in /etc/udev/rules.d/ with the appropriate idVendor and idProducts will bring up
# the teensies/sensors with the defined symlink names
KERNEL=="ttyACM[0-9]*", SUBSYSTEM=="tty", SUBSYSTEMS=="usb", ATTRS{bInterfaceNumber}=="00", ENV{channel}="0"
KERNEL=="ttyACM[0-9]*", SUBSYSTEM=="tty", SUBSYSTEMS=="usb", ATTRS{bInterfaceNumber}=="02", ENV{channel}="1"
ACTION=="add", ATTRS{idVendor}=="0403", ATTRS{idProduct}=="6001", SYMLINK+="vectornav0"
ACTION=="add", ATTRS{idVendor}=="10c4", ATTRS{idProduct}=="ea60", SYMLINK+="rplidar0"
ACTION=="add", ATTRS{idVendor}=="1546", ATTRS{idProduct}=="01a9", SYMLINK+="zedf9p0"
ENV{channel}=="0" ATTRS{idVendor}=="16c0", ATTRS{idProduct}=="048b", SYMLINK+="MCIU0"
ENV{channel}=="1" ATTRS{idVendor}=="16c0", ATTRS{idProduct}=="048b", SYMLINK+="MCIU1"
ajgoddu
(3 rep)
Jun 23, 2025, 07:16 PM
• Last activity: Jun 30, 2025, 07:30 PM
0
votes
0
answers
463
views
How to make Huawei E5372 USB 4g LTE Modem work on Debian 12?
I'm trying to make my Huawei E5372 USB modem work with my Debian 12 Linux with Gnome Desktop Environment but having no luck with it. When listing modems with ModemManager the USB modem is shown: ```bash tiago@dell-inspiron-15-3520:~$ sudo mmcli -L /org/freedesktop/ModemManager1/Modem/1 [huawei] E537...
I'm trying to make my Huawei E5372 USB modem work with my Debian 12 Linux with Gnome Desktop Environment but having no luck with it.
When listing modems with ModemManager the USB modem is shown:
tiago@dell-inspiron-15-3520:~$ sudo mmcli -L
/org/freedesktop/ModemManager1/Modem/1 [huawei] E5372tiago@dell-inspiron-15-3520:~$ sudo mmcli -m 1
--------------------------------
General | path: /org/freedesktop/ModemManager1/Modem/1
| device id: XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
--------------------------------
Hardware | manufacturer: huawei
| model: E5372
| firmware revision: 21.221.19.00.00
| supported: gsm-umts
| current: gsm-umts
| equipment id: XXXXXXXXXXXXXXX
--------------------------------
System | device: /sys/devices/pci0000:00/0000:00:14.0/usb1/1-1
| drivers: huawei_cdc_ncm, option
| plugin: huawei
| primary port: cdc-wdm0
| ports: cdc-wdm0 (at), ttyUSB0 (at), wwx0c5b8f279a64 (net)
--------------------------------
Status | unlock retries: sim-pin (3), sim-puk (10), sim-pin2 (3), sim-puk2 (10)
| state: registered
| power state: on
| access tech: lte
| signal quality: 100% (recent)
--------------------------------
Modes | supported: allowed: 2g; preferred: none
| allowed: 3g; preferred: none
| allowed: 4g; preferred: none
| allowed: 2g, 3g, 4g; preferred: 4g
| allowed: 2g, 3g, 4g; preferred: 4g
| allowed: 2g, 3g, 4g; preferred: 3g
| allowed: 2g, 3g, 4g; preferred: 3g
| allowed: 2g, 3g, 4g; preferred: 2g
| allowed: 2g, 3g, 4g; preferred: 2g
| allowed: 3g, 4g; preferred: 4g
| allowed: 2g, 4g; preferred: 4g
| allowed: 2g, 3g; preferred: 3g
| allowed: 3g, 4g; preferred: 3g
| allowed: 2g, 3g; preferred: 2g
| allowed: 2g, 4g; preferred: 2g
| allowed: 2g, 3g, 4g; preferred: none
| current: allowed: 2g, 3g, 4g; preferred: none
--------------------------------
IP | supported: ipv4, ipv6, ipv4v6
--------------------------------
3GPP | imei: XXXXXXXXXXXXXXXX
| operator id: 72404
| operator name: TIMBRASIL
| registration: home
| packet service state: attached
--------------------------------
3GPP EPS | ue mode of operation: csps-2
--------------------------------
SIM | primary sim path: /org/freedesktop/ModemManager1/SIM/1
--------------------------------
Bearer | paths: /org/freedesktop/ModemManager1/Bearer/4
| /org/freedesktop/ModemManager1/Bearer/3
| /org/freedesktop/ModemManager1/Bearer/2tiago@dell-inspiron-15-3520:~$ sudo mmcli -m 1 -b 2
--------------------------------------
General | path: /org/freedesktop/ModemManager1/Bearer/2
| type: default
--------------------------------------
Status | connected: no
| connection error name: org.freedesktop.ModemManager1.Error.Core.Unsupported
| connection error message: Only IPv4 is supported by this modem
| suspended: no
| multiplexed: no
| ip timeout: 20
--------------------------------------
Properties | apn: timbrasil.br
| roaming: allowed
| ip type: ipv4v6
| user: tim
| password: tim
--------------------------------------
Statistics | attempts: 8
| attempts: 8
tiago@dell-inspiron-15-3520:~$ sudo mmcli -m 1 -b 3
--------------------------------------
General | path: /org/freedesktop/ModemManager1/Bearer/3
| type: default
--------------------------------------
Status | connected: no
| connection error name: org.freedesktop.ModemManager1.Error.MobileEquipment.Unknown
| connection error message: Unknown error
| suspended: no
| multiplexed: no
| ip timeout: 20
--------------------------------------
Properties | apn: timbrasil.br
| roaming: allowed
| ip type: ipv4
| user: tim
| password: tim
--------------------------------------
Statistics | attempts: 8
| attempts: 8
tiago@dell-inspiron-15-3520:~$ sudo mmcli -m 1 -b 4
--------------------------------------
General | path: /org/freedesktop/ModemManager1/Bearer/4
| type: default
--------------------------------------
Status | connected: no
| connection error name: org.freedesktop.ModemManager1.Error.Core.Unsupported
| connection error message: Only IPv4 is supported by this modem
| suspended: no
| multiplexed: no
| ip timeout: 20
--------------------------------------
Properties | apn: timbrasil.br
| roaming: allowed
| ip type: ipv6
| user: tim
| password: tim
--------------------------------------
Statistics | attempts: 8
| attempts: 8tiago@dell-inspiron-15-3520:~$ sudo mmcli -i 1
-------------------------------
General | path: /org/freedesktop/ModemManager1/SIM/1
-------------------------------
Properties | active: yes
| imsi: XXXXXXXXXXXXXXX
| iccid: XXXXXXXXXXXXXXXXXXXXXX
| operator id: 72404
| operator name: TIM
| gid2: FFFFFFFFFFFFFFFFFFhuawei-4g **NetworkManager connection** is configured as following:
tiago@dell-inspiron-15-3520:~$ sudo nmcli c show huawei-4g | cat
connection.id: huawei-4g
connection.uuid: 0aa9ce26-96a3-49a8-a509-f48e56a3981e
connection.stable-id: --
connection.type: gsm
connection.interface-name: cdc-wdm0
connection.autoconnect: yes
connection.autoconnect-priority: 0
connection.autoconnect-retries: -1 (default)
connection.multi-connect: 0 (default)
connection.auth-retries: -1
connection.timestamp: 1726645128
connection.read-only: no
connection.permissions: --
connection.zone: --
connection.master: --
connection.slave-type: --
connection.autoconnect-slaves: -1 (default)
connection.secondaries: --
connection.gateway-ping-timeout: 0
connection.metered: unknown
connection.lldp: default
connection.mdns: -1 (default)
connection.llmnr: -1 (default)
connection.dns-over-tls: -1 (default)
connection.mptcp-flags: 0x0 (default)
connection.wait-device-timeout: -1
connection.wait-activation-delay: -1
ipv4.method: auto
ipv4.dns: --
ipv4.dns-search: --
ipv4.dns-options: --
ipv4.dns-priority: 0
ipv4.addresses: --
ipv4.gateway: --
ipv4.routes: --
ipv4.route-metric: -1
ipv4.route-table: 0 (unspec)
ipv4.routing-rules: --
ipv4.replace-local-rule: -1 (default)
ipv4.ignore-auto-routes: no
ipv4.ignore-auto-dns: no
ipv4.dhcp-client-id: --
ipv4.dhcp-iaid: --
ipv4.dhcp-timeout: 0 (default)
ipv4.dhcp-send-hostname: yes
ipv4.dhcp-hostname: --
ipv4.dhcp-fqdn: --
ipv4.dhcp-hostname-flags: 0x0 (none)
ipv4.never-default: no
ipv4.may-fail: yes
ipv4.required-timeout: -1 (default)
ipv4.dad-timeout: -1 (default)
ipv4.dhcp-vendor-class-identifier: --
ipv4.link-local: 0 (default)
ipv4.dhcp-reject-servers: --
ipv4.auto-route-ext-gw: -1 (default)
ipv6.method: auto
ipv6.dns: --
ipv6.dns-search: --
ipv6.dns-options: --
ipv6.dns-priority: 0
ipv6.addresses: --
ipv6.gateway: --
ipv6.routes: --
ipv6.route-metric: -1
ipv6.route-table: 0 (unspec)
ipv6.routing-rules: --
ipv6.replace-local-rule: -1 (default)
ipv6.ignore-auto-routes: no
ipv6.ignore-auto-dns: no
ipv6.never-default: no
ipv6.may-fail: yes
ipv6.required-timeout: -1 (default)
ipv6.ip6-privacy: -1 (unknown)
ipv6.addr-gen-mode: default
ipv6.ra-timeout: 0 (default)
ipv6.mtu: auto
ipv6.dhcp-duid: --
ipv6.dhcp-iaid: --
ipv6.dhcp-timeout: 0 (default)
ipv6.dhcp-send-hostname: yes
ipv6.dhcp-hostname: --
ipv6.dhcp-hostname-flags: 0x0 (none)
ipv6.auto-route-ext-gw: -1 (default)
ipv6.token: --
gsm.auto-config: no
gsm.number: --
gsm.username: tim
gsm.password:
gsm.password-flags: 0 (none)
gsm.apn: "timbrasil.br"
gsm.network-id: --
gsm.pin:
gsm.pin-flags: 0 (none)
gsm.home-only: no
gsm.device-id: --
gsm.sim-id: --
gsm.sim-operator-id: --
gsm.mtu: auto
proxy.method: none
proxy.browser-only: no
proxy.pac-url: --
proxy.pac-script: --tiago@dell-inspiron-15-3520:~$ sudo nmcli c up huawei-4g
Error: Connection activation failed: Unknown error
Hint: use 'journalctl -xe NM_CONNECTION=0aa9ce26-96a3-49a8-a509-f48e56a3981e + NM_DEVICE=cdc-wdm0' to get more details.set 18 04:44:31 dell-inspiron-15-3520 NetworkManager: [1726645471.6054] device (cdc-wdm0): Activation: starting connection 'huawei-4g' (0aa9ce26-96a3-49a8-a509-f48e56a3981e)
set 18 04:44:31 dell-inspiron-15-3520 NetworkManager: [1726645471.6055] device (cdc-wdm0): state change: disconnected -> prepare (reason 'none', sys-iface-state: 'managed')
set 18 04:44:31 dell-inspiron-15-3520 NetworkManager: [1726645471.6063] device (cdc-wdm0): state change: prepare -> need-auth (reason 'none', sys-iface-state: 'managed')
set 18 04:44:31 dell-inspiron-15-3520 NetworkManager: [1726645471.6075] device (cdc-wdm0): state change: need-auth -> prepare (reason 'none', sys-iface-state: 'managed')
set 18 04:44:31 dell-inspiron-15-3520 NetworkManager: [1726645471.6271] modem-broadband[cdc-wdm0]: failed to connect modem: Only IPv4 is supported by this modem
set 18 04:44:31 dell-inspiron-15-3520 NetworkManager: [1726645471.6272] device (cdc-wdm0): state change: prepare -> failed (reason 'unknown', sys-iface-state: 'managed')
set 18 04:44:31 dell-inspiron-15-3520 NetworkManager: [1726645471.6278] device (cdc-wdm0): Activation: failed for connection 'huawei-4g'
set 18 04:44:31 dell-inspiron-15-3520 NetworkManager: [1726645471.6280] device (cdc-wdm0): state change: failed -> disconnected (reason 'none', sys-iface-state: 'managed')
set 18 04:44:31 dell-inspiron-15-3520 NetworkManager: [1726645471.6286] device (cdc-wdm0): Activation: starting connection 'huawei-4g' (0aa9ce26-96a3-49a8-a509-f48e56a3981e)
set 18 04:44:31 dell-inspiron-15-3520 NetworkManager: [1726645471.6287] device (cdc-wdm0): state change: disconnected -> prepare (reason 'none', sys-iface-state: 'managed')
set 18 04:44:31 dell-inspiron-15-3520 NetworkManager: [1726645471.6290] device (cdc-wdm0): state change: prepare -> need-auth (reason 'none', sys-iface-state: 'managed')
set 18 04:44:31 dell-inspiron-15-3520 NetworkManager: [1726645471.6297] device (cdc-wdm0): state change: need-auth -> prepare (reason 'none', sys-iface-state: 'managed')
set 18 04:44:31 dell-inspiron-15-3520 NetworkManager: [1726645471.6469] modem-broadband[cdc-wdm0]: failed to connect modem: Only IPv4 is supported by this modem
set 18 04:44:31 dell-inspiron-15-3520 NetworkManager: [1726645471.6469] device (cdc-wdm0): state change: prepare -> failed (reason 'unknown', sys-iface-state: 'managed')
set 18 04:44:31 dell-inspiron-15-3520 NetworkManager: [1726645471.6473] device (cdc-wdm0): Activation: failed for connection 'huawei-4g'
set 18 04:44:31 dell-inspiron-15-3520 NetworkManager: [1726645471.6475] device (cdc-wdm0): state change: failed -> disconnected (reason 'none', sys-iface-state: 'managed')
set 18 04:44:31 dell-inspiron-15-3520 NetworkManager: [1726645471.6481] device (cdc-wdm0): Activation: starting connection 'huawei-4g' (0aa9ce26-96a3-49a8-a509-f48e56a3981e)
set 18 04:44:31 dell-inspiron-15-3520 NetworkManager: [1726645471.6482] device (cdc-wdm0): state change: disconnected -> prepare (reason 'none', sys-iface-state: 'managed')
set 18 04:44:31 dell-inspiron-15-3520 NetworkManager: [1726645471.6487] device (cdc-wdm0): state change: prepare -> need-auth (reason 'none', sys-iface-state: 'managed')
set 18 04:44:31 dell-inspiron-15-3520 NetworkManager: [1726645471.6495] device (cdc-wdm0): state change: need-auth -> prepare (reason 'none', sys-iface-state: 'managed')
set 18 04:44:31 dell-inspiron-15-3520 NetworkManager: [1726645471.6663] modem-broadband[cdc-wdm0]: failed to connect modem: Only IPv4 is supported by this modem
set 18 04:44:31 dell-inspiron-15-3520 NetworkManager: [1726645471.6663] device (cdc-wdm0): state change: prepare -> failed (reason 'unknown', sys-iface-state: 'managed')
set 18 04:44:31 dell-inspiron-15-3520 NetworkManager: [1726645471.6665] device (cdc-wdm0): Activation: failed for connection 'huawei-4g'
set 18 04:44:31 dell-inspiron-15-3520 NetworkManager: [1726645471.6666] device (cdc-wdm0): state change: failed -> disconnected (reason 'none', sys-iface-state: 'managed')
set 18 04:44:31 dell-inspiron-15-3520 NetworkManager: [1726645471.6669] device (cdc-wdm0): Activation: starting connection 'huawei-4g' (0aa9ce26-96a3-49a8-a509-f48e56a3981e)
set 18 04:44:31 dell-inspiron-15-3520 NetworkManager: [1726645471.6670] device (cdc-wdm0): state change: disconnected -> prepare (reason 'none', sys-iface-state: 'managed')
set 18 04:44:31 dell-inspiron-15-3520 NetworkManager: [1726645471.6673] device (cdc-wdm0): state change: prepare -> need-auth (reason 'none', sys-iface-state: 'managed')
set 18 04:44:31 dell-inspiron-15-3520 NetworkManager: [1726645471.6681] device (cdc-wdm0): state change: need-auth -> prepare (reason 'none', sys-iface-state: 'managed')
set 18 04:44:31 dell-inspiron-15-3520 NetworkManager: [1726645471.6845] modem-broadband[cdc-wdm0]: failed to connect modem: Only IPv4 is supported by this modem
set 18 04:44:31 dell-inspiron-15-3520 NetworkManager: [1726645471.6846] device (cdc-wdm0): state change: prepare -> failed (reason 'unknown', sys-iface-state: 'managed')
set 18 04:44:31 dell-inspiron-15-3520 NetworkManager: [1726645471.6850] device (cdc-wdm0): Activation: failed for connection 'huawei-4g'
set 18 04:44:31 dell-inspiron-15-3520 NetworkManager: [1726645471.6852] device (cdc-wdm0): state change: failed -> disconnected (reason 'none', sys-iface-state: 'managed')
Tiago Stapenhorst
(145 rep)
Sep 18, 2024, 07:55 AM
1
votes
2
answers
161
views
How can I share LTE modem internet over Wifi?
I've got my LTE modem setup with NetworkManager/ModemManager and that's working fine. I've also got Wifi setup as an access point in NetworkManager with DHCP. But how can I share the LTE modem internet access over Wifi? I've enabled IP forwarding (`echo 1 > /proc/sys/net/ipv4/ip_forward`), what else...
I've got my LTE modem setup with NetworkManager/ModemManager and that's working fine. I've also got Wifi setup as an access point in NetworkManager with DHCP.
But how can I share the LTE modem internet access over Wifi? I've enabled IP forwarding (
echo 1 > /proc/sys/net/ipv4/ip_forward), what else is there?
# ifconfig
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:65536 Metric:1
RX packets:12946 errors:0 dropped:0 overruns:0 frame:0
TX packets:12946 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:1297231 (1.2 MiB) TX bytes:1297231 (1.2 MiB)
wlan0 Link encap:Ethernet HWaddr E8:4F:25:DD:BD:51
inet addr:10.42.0.1 Bcast:10.42.0.255 Mask:255.255.255.0
inet6 addr: fe80::ea4f:25ff:fedd:bd51/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:77 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 B) TX bytes:12101 (11.8 KiB)
wwan0 Link encap:UNSPEC HWaddr 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00
inet addr:100.72.254.176 P-t-P:100.72.254.176 Mask:255.255.255.224
UP POINTOPOINT RUNNING NOARP MULTICAST MTU:1500 Metric:1
RX packets:1808 errors:0 dropped:0 overruns:0 frame:0
TX packets:2176 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:356293 (347.9 KiB) TX bytes:261384 (255.2 KiB)
# ip route
default via 100.72.254.177 dev wwan0 metric 700
10.42.0.0/24 dev wlan0 scope link src 10.42.0.1 metric 600
100.72.254.160/27 dev wwan0 scope link src 100.72.254.176 metric 700
The DHCP for the Wifi is done by NetworkManager starting dnsmasq with default parameters:
# ps -eF | grep dnsmasq
nobody 1104 606 0 1285 2444 0 09:05 ? 00:00:00 /usr/bin/dnsmasq --conf-file=/dev/null --no-hosts --keep-in-foreground --bind-interfaces --except-interface=lo --clear-on-reload --strict-order --listen-address=10.42.0.1 --dhcp-range=10.42.0.10,10.42.0.254,60m --dhcp-lease-max=50 --dhcp-leasefile=/var/lib/NetworkManager/dnsmasq-wlan0.leases --pid-file=/var/run/nm-dnsmasq-wlan0.pid --conf-dir=/etc/NetworkManager/dnsmasq-shared.d
ref https://unix.stackexchange.com/questions/384762/networkmanager-and-dnsmasq-dhcp-address-range) .
# cat /etc/NetworkManager/system-connections/ap.nmconnection
[connection]
id=ap
uuid=3205b229-8c4d-4766-8d63-bcd949d03321
type=wifi
autoconnect=false
interface-name=wlan0
[wifi]
band=bg
channel=1
mode=ap
ssid=MySSID
[wifi-security]
group=ccmp;
key-mgmt=wpa-psk
pairwise=ccmp;
proto=rsn;
psk=MyPSK
[ipv4]
method=shared
[ipv6]
addr-gen-mode=stable-privacy
method=ignore
[proxy]
A colleague suggested https://github.com/oblique/create_ap . I tried both the NAT and bridge options but they both failed.
NAT:
# create_ap -w 2 wlan0 wwan0 APTest 12345678
WARN: brmfmac driver doesn't work properly with virtual interfaces and
it can cause kernel panic. For this reason we disallow virtual
interfaces for your adapter.
For more info: https://github.com/oblique/create_ap/issues/203
WARN: Your adapter does not fully support AP virtual interface, enabling --no-virt
Config dir: /tmp/create_ap.wlan0.conf.XX59Vdf8
PID: 537195
Network Manager found, set wlan0 as unmanaged device... [46988.754925] ieee80211 phy1: brcmf_set_pmk: failed to change PSK in firmware (len=0)
[46988.784848] ieee80211 phy1: brcmf_vif_set_mgmt_ie: vndr ie set error : -52
[46988.792027] ieee80211 phy1: brcmf_vif_set_mgmt_ie: vndr ie set error : -52
DONE
Sharing Internet using method: nat
iptables v1.8.7 (legacy): unknown option "--to-ports"
Try `iptables -h' or 'iptables --help' for more information.
Doing cleanup.. done
Bridge:
# create_ap -w 2 -m bridge wlan0 wwan0 APTest 12345678
WARN: brmfmac driver doesn't work properly with virtual interfaces and
it can cause kernel panic. For this reason we disallow virtual
interfaces for your adapter.
For more info: https://github.com/oblique/create_ap/issues/203
WARN: Your adapter does not fully support AP virtual interface, enabling --no-virt
Config dir: /tmp/create_ap.wlan0.conf.XXgGPNON
PID: 540585
Network Manager found, set wlan0 as unmanaged device... DONE
Sharing Internet using method: bridge
Create a bridge interface... ip: RTNETLINK answers: Operation not supported
parsley72
(319 rep)
Jul 22, 2024, 04:18 AM
• Last activity: Jul 31, 2024, 11:02 PM
1
votes
0
answers
202
views
Foxconn X55 modem disconnects without any reason
My Thinkpad P1 gen4 has a Foxconn Snapdragon X55 wwan-modem. I'm running Arch (6.7.2-arch1-1) with Gnome (45.3) on it. I updated firmware of modem to T99W175.F0.1.0.0.9.TF.008.079 . I also symlinked FCC-unlock. The modem is working, I can connect and use it. ```` $ ls -la /etc/ModemManager/fcc-unloc...
My Thinkpad P1 gen4 has a Foxconn Snapdragon X55 wwan-modem. I'm running Arch (6.7.2-arch1-1) with Gnome (45.3) on it.
I updated firmware of modem to T99W175.F0.1.0.0.9.TF.008.079 . I also symlinked FCC-unlock. The modem is working, I can connect and use it.
`
$ ls -la /etc/ModemManager/fcc-unlock.d
lrwxrwxrwx 1 root root 56 22. Jan 22:20 105b:e0ab -> /usr/share/ModemManager/fcc-unlock.available.d/105b:e0ab`
Jan 30 08:27:31 thinkpad kernel: sequence number glitch prev=7 curr=0`
Jan 30 13:18:51 thinkpad kernel: mhi-pci-generic 0000:08:00.0: firmware crashed (6)
Jan 30 13:18:51 thinkpad kernel: wwan0: Failed to queue TX buf (-5)
Jan 30 13:18:52 thinkpad ModemManager: [modem1] port 'wwan0mbim0' no longer controllable, reprobing
Jan 30 13:18:52 thinkpad NetworkManager: [1706617132.0900] device (wwan0mbim0): state change: activated -> unmanaged (reason 'removed', sys-iface-state: 'removed')
Jan 30 13:18:52 thinkpad kernel: wwan wwan0: port wwan0qcdm0 disconnected
Jan 30 13:18:52 thinkpad kernel: wwan wwan0: port wwan0mbim0 disconnected
Jan 30 13:18:52 thinkpad kernel: wwan wwan0: port wwan0at0 disconnected
Jan 30 13:18:52 thinkpad ModemManager: [/dev/wwan0mbim0] MBIM error: Device must be open to send commands
Jan 30 13:18:52 thinkpad ModemManager: [/dev/wwan0mbim0] MBIM error: Device must be open to send commands
Jan 30 13:18:52 thinkpad ModemManager: [/dev/wwan0mbim0] MBIM error: Device must be open to send commands
Jan 30 13:18:52 thinkpad ModemManager: [/dev/wwan0mbim0] MBIM error: Device must be open to send commands
Jan 30 13:18:52 thinkpad ModemManager: [/dev/wwan0mbim0] MBIM error: Device must be open to send commands
Jan 30 13:18:52 thinkpad ModemManager: [modem1/wwan0mbim0/mbim] Couldn't properly close QMI device: Device must be open to send commands
Jan 30 13:18:52 thinkpad passimd: resetting Passim-D3AC
Jan 30 13:18:52 thinkpad passimd: Emitting PropertyChanged('Status'='running')
Jan 30 13:18:52 thinkpad passimd: signal_name: StateChanged (is)
Jan 30 13:18:52 thinkpad ModemManager: [base-manager] port wwan0qcdm0 released by device '/sys/devices/pci0000:00/0000:00:1c.4/0000:08:00.0'
Jan 30 13:18:52 thinkpad ModemManager: [base-manager] port wwan0mbim0 released by device '/sys/devices/pci0000:00/0000:00:1c.4/0000:08:00.0'
Jan 30 13:18:52 thinkpad ModemManager: [base-manager] port wwan0at0 released by device '/sys/devices/pci0000:00/0000:00:1c.4/0000:08:00.0'
Jan 30 13:18:52 thinkpad ModemManager: [base-manager] port wwan0 released by device '/sys/devices/pci0000:00/0000:00:1c.4/0000:08:00.0'
Jan 30 13:18:52 thinkpad dnsmasq: no servers found in /etc/resolv.conf, will retry
Jan 30 13:18:52 thinkpad NetworkManager: [1706617132.1380] manager: NetworkManager state is now CONNECTED_LOCAL
Jan 30 13:18:52 thinkpad NetworkManager: [1706617132.1388] modem-broadband[wwan0mbim0]: failed to disconnect modem: GDBus.Error:org.freedesktop.DBus.Error.UnknownMethod: Object does not exist at path “/org/freedesktop/ModemManager1/Modem/1”
Jan 30 13:18:52 thinkpad evolution: Network disconnected. Forced offline.
Jan 30 13:18:52 thinkpad systemd: Starting Network Manager Script Dispatcher Service...
Jan 30 13:18:52 thinkpad systemd: Started Network Manager Script Dispatcher Service.
Jan 30 13:18:52 thinkpad kernel: wwan wwan0: port wwan0qcdm0 attached
Jan 30 13:18:52 thinkpad kernel: wwan wwan0: port wwan0mbim0 attached
Jan 30 13:18:52 thinkpad kernel: wwan wwan0: port wwan0at0 attached
Jan 30 13:18:52 thinkpad vivaldi-stable.desktop: Fontconfig error: Cannot load default config file: No such file: (null)
Jan 30 13:18:53 thinkpad passimd: signal_name: StateChanged (is)
Jan 30 13:18:54 thinkpad ModemManager: [wwan0mbim0/mbim] MBIM device is not QMI capable
Jan 30 13:18:56 thinkpad ModemManager: [device /sys/devices/pci0000:00/0000:00:1c.4/0000:08:00.0] creating modem with plugin 'foxconn' and '4' ports
Jan 30 13:18:56 thinkpad ModemManager: [base-manager] modem for device '/sys/devices/pci0000:00/0000:00:1c.4/0000:08:00.0' successfully created
Jan 30 13:18:56 thinkpad ModemManager: [modem2/wwan0mbim0/mbim] MBIM device is QMI capable
Jan 30 13:18:56 thinkpad ModemManager: [modem2] state changed (unknown -> disabled)
Jan 30 13:18:56 thinkpad NetworkManager: [1706617136.5651] manager: (wwan0mbim0): new Broadband device (/org/freedesktop/NetworkManager/Devices/8)
Jan 30 13:18:56 thinkpad NetworkManager: [1706617136.5655] device (wwan0mbim0): state change: unmanaged -> unavailable (reason 'managed', sys-iface-state: 'external')
Jan 30 13:18:56 thinkpad NetworkManager: [1706617136.5660] device (wwan0mbim0): modem state 'enabling'
Jan 30 13:18:56 thinkpad NetworkManager: [1706617136.5666] device (wwan0mbim0): state change: unavailable -> disconnected (reason 'none', sys-iface-state: 'managed')
Johannes C. Schulz
(192 rep)
Jan 30, 2024, 09:10 AM
• Last activity: Jan 30, 2024, 12:21 PM
0
votes
2
answers
441
views
3G connection with ModemManager and Netplan connect and disconnect immediatly
I have a problem with an old 3G modem (Telit HE910), the connection is made via Netplan and ModemManager. The modem is recognized correctly when Ubuntu starts and the SIM is also recognized without problems. The strange thing is that it seems that the connection is established but then immediately t...
I have a problem with an old 3G modem (Telit HE910), the connection is made via Netplan and ModemManager.
The modem is recognized correctly when Ubuntu starts and the SIM is also recognized without problems.
The strange thing is that it seems that the connection is established but then immediately the modem disconnects.
I tried starting ModemManager in debug mode but I'm not very expert with modems to understand where the problem actually is.
Netplan config:
network:
version: 2
renderer: NetworkManager
ethernets:
enp3: # eth0 - Maintenance
dhcp4: false
optional: true
addresses:
- 172.0.0.10/24
routes:
- to: default
via: 172.0.0.1
nameservers:
addresses:
- 8.8.8.8
- 8.8.4.4
dhcp4-overrides:
route-metric: 1
match:
name: enp3*
set-name: enp3
enp4: # eth1 - External modem
dhcp4: true
dhcp6: false
optional: true
match:
name: enp4*
set-name: enp4
modems:
telit: # Internal modem
dhcp4: true
optional: true
apn: iliad
auto-config: true
dhcp4-overrides:
route-metric: 900
match:
name: ttyACM*
set-name: mobile
wifis:
wlp1s0:
dhcp4: false
dhcp6: false
optional: true
access-points: # Required for wifis
"empty":
password: ""
ModemManager logs:
ModemManager: [1662750117.761616] [modem0/bearer0] connection through a plain serial AT port: ttyACM0
ModemManager: [1662750117.761825] [modem0/ttyACM0/at] device open count is 5 (open)
ModemManager: [1662750117.762137] [modem0/ttyACM0/at] device open count is 4 (close)
ModemManager: [1662750117.762428] [modem0/ttyACM0/at] --> 'ATD*99***3#'
ModemManager: [1662750117.796882] [modem0/ttyACM0/at] CONNECT'
ModemManager: [1662750117.797202] [modem0/bearer0] setting flow control in ttyACM0: rts-cts
ModemManager: [1662750117.797369] [modem0/ttyACM0/at] enabling RTS/CTS flow control
ModemManager: [1662750117.797575] [modem0/ttyACM0/at] flow control settings updated to rts-cts
ModemManager: [1662750117.797780] [modem0/ttyACM0/at] port now connected
ModemManager: [1662750117.798010] [modem0/bearer0] connected
ModemManager: [1662750117.798634] [modem0/bearer0] PPP is required for connection, will ignore disconnection reports
ModemManager: [1662750117.798836] [modem0] state changed (registered -> connected)
ModemManager: [1662750117.800684] [modem0] simple connect state (8/8): all done
ModemManager: [1662750117.801266] [modem0/ttyACM0/at] device open count is 3 (close)
ModemManager: [1662750117.836536] [modem0] user request to disconnect modem (all bearers)
ModemManager: [1662750117.839942] [modem0] user request to disconnect modem (all bearers)
ModemManager: [1662750117.850015] [modem0] user request to connect modem
ModemManager: [1662750117.859771] [modem0/bearer0] disconnecting...
ModemManager: [1662750117.860051] [modem0] state changed (connected -> disconnecting)
ModemManager: [1662750117.861365] [modem0/bearer0] sending PDP context deactivation in secondary port...
ModemManager: [1662750117.861621] [modem0/ttyACM3/at] device open count is 2 (open)
ModemManager: [1662750117.862099] [modem0/ttyACM3/at] --> 'AT+CGACT=0,3'
ModemManager: [1662750117.888064] [modem0/ttyACM3/at] OK'
ModemManager: [1662750117.888482] [modem0/bearer0] reopening data port ttyACM0...
ModemManager: [1662750117.888661] [modem0/ttyACM0/at] reopening port (3)
ModemManager: [1662750117.888796] [modem0/ttyACM0/at] device open count is 2 (close)
ModemManager: [1662750117.888921] [modem0/ttyACM0/at] device open count is 1 (close)
ModemManager: [1662750117.889047] [modem0/ttyACM0/at] device open count is 0 (close)
ModemManager: [1662750117.889250] [modem0/ttyACM0/at] closing serial port...
ModemManager: [1662750117.889431] [modem0/ttyACM0/at] port now disconnected
ModemManager: [1662750117.892280] [modem0/ttyACM0/at] serial port closed
ModemManager: [1662750117.892472] [modem0/ttyACM3/at] device open count is 1 (close)
ModemManager: [1662750117.892880] [modem0] simple connect started...
ModemManager: [1662750117.893018] [modem0] profile ID: unspecified
ModemManager: [1662750117.893149] [modem0] PIN: unspecified
ModemManager: [1662750117.893266] [modem0] operator ID: unspecified
ModemManager: [1662750117.893376] [modem0] allowed roaming: yes
ModemManager: [1662750117.893487] [modem0] APN: iliad
ModemManager: [1662750117.893596] [modem0] APN type: unspecified
ModemManager: [1662750117.893707] [modem0] IP family: ipv4v6
ModemManager: [1662750117.893828] [modem0] allowed authentication: unspecified
ModemManager: [1662750117.893948] [modem0] user: unspecified
ModemManager: [1662750117.894068] [modem0] password: unspecified
ModemManager: [1662750117.894184] [modem0] multiplex: unspecified
ModemManager: [1662750117.894341] [modem0] simple connect state (4/8): wait to get fully enabled
ModemManager: [1662750118.893991] [modem0/ttyACM0/at] opening serial port...
ModemManager: [1662750118.896308] [modem0/ttyACM0/at] setting up baudrate: 57600
ModemManager: [1662750118.896488] [modem0/ttyACM0/at] no flow control explicitly requested for device
ModemManager: [1662750118.896831] [modem0/ttyACM0/at] device open count is 1 (open)
ModemManager: [1662750118.896970] [modem0/ttyACM0/at] device open count is 2 (open)
ModemManager: [1662750118.897117] [modem0/ttyACM0/at] device open count is 3 (open)
ModemManager: [1662750118.897306] [modem0/bearer0] flashing data port ttyACM0...
ModemManager: [1662750118.897691] [modem0/ttyACM0/at] [1662750118.898171] [modem0/ttyACM0/at] device open count is 2 (close)
ModemManager: [1662750118.898562] [modem0/ttyACM0/at] running init sequence...
ModemManager: [1662750118.899053] [modem0/bearer0] PDP disconnection already sent
ModemManager: [1662750118.899235] [modem0/bearer0] disconnected
ModemManager: [1662750118.899435] [modem0] state changed (disconnecting -> registered)
ModemManager: [1662750118.899820] [modem0] simple connect state (5/8): register
ModemManager: [1662750118.900457] [modem0] already registered automatically in network '22250', automatic registration not launched...
ModemManager: [1662750118.902789] [modem0/bearer0] connection #1 finished: duration 1s, tx: 0 bytes, rx: 0 bytes
ModemManager: [1662750118.903778] [modem0] simple connect state (6/8): bearer
ModemManager: [1662750118.905370] [modem0] creating new bearer...
ModemManager: [1662750118.905609] [modem0] creating broadband bearer in broadband modem...
ModemManager: [1662750118.906852] [modem0/ttyACM0/at] device open count is 3 (open)
ModemManager: [1662750118.910141] [modem0] simple connect state (7/8): connect
ModemManager: [1662750118.910928] [modem0/bearer1] connecting...
ModemManager: [1662750118.911186] [modem0] state changed (registered -> connecting)
ModemManager: [1662750118.913608] [modem0/bearer1] launching 3GPP connection attempt
ModemManager: [1662750118.913857] [modem0] set profile state (1/8): check format
ModemManager: [1662750118.914074] [modem0/ttyACM0/at] device open count is 4 (open)
ModemManager: [1662750118.914341] [modem0/ttyACM0/at] device open count is 3 (close)
ModemManager: [1662750118.915863] [modem0/ttyACM0/at] --> 'ATE0'
ModemManager: [1662750119.795226] [modem0/ttyACM0/at] [1662750120.795152] [modem0/ttyACM0/at] [1662750121.180951] [modem0/ttyACM3/at] +CIEV: signal,2'
ModemManager: [1662750121.181451] [modem0] signal quality updated (28)
ModemManager: [1662750121.795367] [modem0/ttyACM0/at] [1662750122.510824] [modem0/ttyACM0/at] device open count is 4 (open)
ModemManager: [1662750122.511330] [modem0/ttyACM0/at] --> 'ATV1'
ModemManager: [1662750122.795777] [modem0/ttyACM0/at] [1662750123.795760] [modem0/ttyACM0/at] [1662750124.796161] [modem0/ttyACM0/at] [1662750125.510748] [modem0] port ttyACM0 timed out 2 consecutive times
ModemManager: [1662750125.511081] [modem0/ttyACM0/at] --> 'AT+CMEE=1'
ModemManager: [1662750125.796557] [modem0/ttyACM0/at] [1662750126.797186] [modem0/ttyACM0/at] [1662750127.797395] [modem0/ttyACM0/at] [1662750128.511090] [modem0] port ttyACM0 timed out 3 consecutive times
ModemManager: [1662750128.511364] [modem0/ttyACM0/at] --> 'ATX4'
ModemManager: [1662750128.931528] [modem0/ttyACM0/at] NO CARRIER'
ModemManager: [1662750128.931900] [modem0/ttyACM0/at] operation failure: 1 (No carrier)
ModemManager: [1662750128.932274] [modem0/ttyACM0/at] --> 'AT&C1'
ModemManager: [1662750128.938206] [modem0/ttyACM0/at] +CIEV: signal,2'
ModemManager: [1662750128.938646] [modem0] signal quality updated (28)
ModemManager: [1662750128.948414] [modem0/ttyACM0/at] OK'
ModemManager: [1662750128.949130] [modem0] +CGDCONT format details for PDP type 'ipv4v6': minimum 1, maximum 5
ModemManager: [1662750128.949320] [modem0] context definition format: minimum 1, maximum 5
ModemManager: [1662750128.949464] [modem0] set profile state (2/8): list before
ModemManager: [1662750128.949675] [modem0/ttyACM0/at] device open count is 5 (open)
ModemManager: [1662750128.949897] [modem0/ttyACM0/at] device open count is 4 (close)
ModemManager: [1662750128.950154] [modem0/ttyACM0/at] --> 'AT+CCLK?'
ModemManager: [1662750128.975347] [modem0/ttyACM0/at] '
ModemManager: [1662750128.975784] [modem0/ttyACM0/at] OK'
ModemManager: [1662750128.976535] [modem0/ttyACM0/at] device open count is 3 (close)
ModemManager: [1662750128.977418] [modem0/ttyACM0/at] --> 'AT+CGDCONT?'
ModemManager: [1662750129.003874] [modem0/ttyACM0/at] +CGDCONT: 1,"IP","web.omnitel.it","",0,0+CGDCONT: 2,"IP","iliad","",0,0+CGDCONT: 3,"IPV4V6","iliad","",0,0OK'
ModemManager: [1662750129.004954] [modem0] set profile state (3/8): select profile (best)
ModemManager: [1662750129.005130] [modem0] found exact context at profile 3
ModemManager: [1662750129.005258] [modem0] reusing profile '3'
ModemManager: [1662750129.005408] [modem0] set profile state (4/8): check activated profile
ModemManager: [1662750129.005614] [modem0] checking if profile with id '3' is already activated...=
ModemManager: [1662750129.005813] [modem0/ttyACM0/at] device open count is 4 (open)
ModemManager: [1662750129.006106] [modem0/ttyACM0/at] device open count is 3 (close)
ModemManager: [1662750129.006645] [modem0/ttyACM0/at] --> 'AT+CGACT?'
ModemManager: [1662750129.032246] [modem0/ttyACM0/at] '
ModemManager: [1662750129.032967] [modem0/ttyACM0/at] +CGACT: 2,0+CGACT: 3,0OK'
ModemManager: [1662750129.034446] [modem0] profile '3' is not activated
ModemManager: [1662750129.034826] [modem0] set profile state (6/8): profile already stored
ModemManager: [1662750129.035450] [modem0] set profile state (8/8): all done
ModemManager: [1662750129.036522] [modem0/ttyACM0/at] device open count is 4 (open)
Cristian
(1 rep)
Oct 12, 2023, 12:20 PM
• Last activity: Oct 18, 2023, 07:08 AM
0
votes
0
answers
124
views
Modem manager problem on Slackware 15.0
On syslog of my Slackware 15.0 I see those annoying messages Oct 1 06:41:45 nas NetworkManager[1867]: [1696135305.0097] modem-manager: error poking ModemManager: GDBus.Error:org.freedesktop.DBus.Error.Spawn.ExecFailed: Failed to execute program org.freedesktop.ModemManager1: Permission denied Oct 1...
On syslog of my Slackware 15.0 I see those annoying messages
Oct 1 06:41:45 nas NetworkManager: [1696135305.0097] modem-manager: error poking ModemManager: GDBus.Error:org.freedesktop.DBus.Error.Spawn.ExecFailed: Failed to execute program org.freedesktop.ModemManager1: Permission denied
Oct 1 06:43:45 nas NetworkManager: [1696135425.0122] modem-manager: error poking ModemManager: GDBus.Error:org.freedesktop.DBus.Error.Spawn.ExecFailed: Failed to execute program org.freedesktop.ModemManager1: Permission denied
Oct 1 06:45:45 nas NetworkManager: [1696135545.0116] modem-manager: error poking ModemManager: GDBus.Error:org.freedesktop.DBus.Error.Spawn.ExecFailed: Failed to execute program org.freedesktop.ModemManager1: Permission denied
Oct 1 06:47:45 nas NetworkManager: [1696135665.0108] modem-manager: error poking ModemManager: GDBus.Error:org.freedesktop.DBus.Error.Spawn.ExecFailed: Failed to execute program org.freedesktop.ModemManager1: Permission denied
Oct 1 06:49:45 nas NetworkManager: [1696135785.0037] modem-manager: error poking ModemManager: GDBus.Error:org.freedesktop.DBus.Error.Spawn.ExecFailed: Failed to execute program org.freedesktop.ModemManager1: Permission denied
Oct 1 06:51:45 nas NetworkManager: [1696135905.0029] modem-manager: error poking ModemManager: GDBus.Error:org.freedesktop.DBus.Error.Spawn.ExecFailed: Failed to execute program org.freedesktop.ModemManager1: Permission denied
Oct 1 06:53:45 nas NetworkManager: [1696136025.0019] modem-manager: error poking ModemManager: GDBus.Error:org.freedesktop.DBus.Error.Spawn.ExecFailed: Failed to execute program org.freedesktop.ModemManager1: Permission denied
Oct 1 06:55:45 nas NetworkManager: [1696136145.0013] modem-manager: error poking ModemManager: GDBus.Error:org.freedesktop.DBus.Error.Spawn.ExecFailed: Failed to execute program org.freedesktop.ModemManager1: Permission denied
What to check?
Thanks
permissions are those:
ls -lhd /usr/sbin/ModemManager
-rwxr-xr-x 1 root root 1,8M nov 26 2021 /usr/sbin/ModemManager*
Those are permission of serial device, I don't understand who change ttyS02 permissions
ls -ld /dev/ttyS*
crw-rw---- 1 root dialout 4, 64 ott 8 04:07 /dev/ttyS0
crw-rw---- 1 root dialout 4, 65 ott 8 04:07 /dev/ttyS1
crw--w---- 1 root tty 4, 66 ott 8 04:10 /dev/ttyS2
crw-rw---- 1 root dialout 4, 67 ott 8 04:07 /dev/ttyS3
grep -irl ttyS2 /etc
/etc/default/grub~
/etc/default/grub
/etc/radiusclient/port-id-map
/etc/radiusclient/radiusclient.conf
/etc/securetty
/etc/serial.conf
/etc/inittab~
/etc/inittab
I have tried to set permissions as default (root:dialout and 660) to ttyS2 but...
Oct 9 21:07:23 nas NetworkManager: [1696878443.0583] modem-manager: error poking ModemManager: GDBus.Error:org.freedesktop.DBus.Error.Spawn.ExecFailed: Failed to execute program org.freedesktop.ModemManager1: Permission denied
elbarna
(13690 rep)
Oct 8, 2023, 02:16 AM
• Last activity: Oct 9, 2023, 07:05 PM
Showing page 1 of 6 total questions