***I have a recent Fossil's ModemManager 1.16.6-2-20.04 and under kernel 5.8.x
it works:
ModemManager.service - Modem Manager
Loaded: loaded (/lib/systemd/system/ModemManager.service; enabled; vendor >
Active: active (running) since Fri 2021-11-12 14:46:59 CET; 2h 19min ago
Main PID: 661 (ModemManager)
Tasks: 5 (limit: 19006)
Memory: 11.6M
CGroup: /system.slice/ModemManager.service
├─ 661 /usr/sbin/ModemManager
└─1054 /usr/libexec/qmi-proxy
nov 12 14:47:03 UB820 ModemManager[661]: <warn> [modem0/sim0] couldn't load li>
nov 12 14:47:03 UB820 ModemManager[661]: <warn> [modem0] couldn't load list of>
nov 12 14:47:03 UB820 ModemManager[661]: <warn> [modem0] couldn't load UE mode>
nov 12 14:47:04 UB820 ModemManager[661]: <info> [modem0] state changed (unknow>
nov 12 14:47:04 UB820 ModemManager[661]: <info> [modem0] state changed (disabl>
nov 12 14:47:04 UB820 ModemManager[661]: <info> [modem0] power state updated: >
nov 12 14:47:04 UB820 ModemManager[661]: <info> [modem0] state changed (enabli>
nov 12 14:47:05 UB820 ModemManager[661]: <info> [modem0] 3GPP registration sta>
nov 12 14:47:05 UB820 ModemManager[661]: <info> [modem0] 3GPP registration sta>
nov 12 14:47:05 UB820 ModemManager[661]: <info> [modem0] state changed (enable>
***After Ubuntu update to recent kernel 5.1x (5.10.x,5.11.x,5.13.x)
ModemManager stays the same version and displays:
sudo systemctl status ModemManager
● ModemManager.service - Modem Manager
Loaded: loaded (/lib/systemd/system/ModemManager.service; enabled; vendor
preset: enabled)
Active: active (running) since Fri 2021-11-12 17:08:24 CET; 1min 30s ago
Main PID: 818 (ModemManager)
Tasks: 3 (limit: 18992)
Memory: 6.7M
CGroup: /system.slice/ModemManager.service
└─818 /usr/sbin/ModemManager
nov 12 17:09:53 UB820 ModemManager[818]: <info> [base-manager] couldn't check
support for device '/sys/devices/pci0000:00/0000:00:14.0/usb1/>
nov 12 17:09:54 UB820 ModemManager[818]: <info> [base-manager] port cdc-wdm0
released by device '/sys/devices/pci0000:00/0000:00:14.0/usb1/1>
nov 12 17:09:54 UB820 ModemManager[818]: <info> [base-manager] port wwan0
released by device '/sys/devices/pci0000:00/0000:00:14.0/usb1/1-3'
nov 12 17:09:54 UB820 ModemManager[818]: <info> [base-manager] couldn't check
support for device '/sys/devices/pci0000:00/0000:00:14.0/usb1/>
nov 12 17:09:54 UB820 ModemManager[818]: <info> [base-manager] port cdc-wdm0
released by device '/sys/devices/pci0000:00/0000:00:14.0/usb1/1>
nov 12 17:09:54 UB820 ModemManager[818]: <info> [base-manager] port wwan0
released by device '/sys/devices/pci0000:00/0000:00:14.0/usb1/1-3'
nov 12 17:09:54 UB820 ModemManager[818]: <info> [base-manager] couldn't check
support for device '/sys/devices/pci0000:00/0000:00:14.0/usb1/>
nov 12 17:09:54 UB820 ModemManager[818]: <info> [base-manager] port cdc-wdm0
released by device '/sys/devices/pci0000:00/0000:00:14.0/usb1/1>
nov 12 17:09:54 UB820 ModemManager[818]: <info> [base-manager] port wwan0
released by device '/sys/devices/pci0000:00/0000:00:14.0/usb1/1-3'
nov 12 17:09:54 UB820 ModemManager[818]: <info> [base-manager] couldn't check
support for device '/sys/devices/pci0000:00/0000:00:14.0/usb1/
--
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1950385
Title:
HP lt4120 Snapdragon X5 LTE USB modem not working since 5.10 kernel
Status in linux package in Ubuntu:
Confirmed
Bug description:
Focal Fossa 20.04.1
HP lt4120 Snapdragon X5 LTE USB modem stopped working from kernel 5.10.x. It
is not seen by Network Manager. Everything worked with 5.8.x kernel. I can't
use newer kernel if I want work over HP lt4120 Snapdragon X5 LTE modem.
I can't test kernel 5.14 & 5.15 in 20.04 due to libc version not compatible
with updated libc from Ubuntu 20.04.
---
ProblemType: Bug
ApportVersion: 2.20.11-0ubuntu27.21
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: mp 2798 F.... pulseaudio
CasperMD5CheckResult: skip
CurrentDesktop: ubuntu:GNOME
DistroRelease: Ubuntu 20.04
InstallationDate: Installed on 2020-05-07 (554 days ago)
InstallationMedia: Ubuntu 20.04 LTS "Focal Fossa" - Release amd64 (20200423)
Lsusb:
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 004: ID 04f2:b51c Chicony Electronics Co., Ltd HP HD Camera
Bus 001 Device 003: ID 8087:0025 Intel Corp.
Bus 001 Device 002: ID 03f0:9d1d HP, Inc HP lt4120 Snapdragon X5 LTE
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
MachineType: HP HP EliteBook 820 G3
Package: linux (not installed)
ProcFB: 0 i915drmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.11.0-40-generic
root=UUID=02d7c99f-6ec6-49fa-8577-3e6243dc7891 ro quiet splash
resume=UUID=02d7c99f-6ec6-49fa-8577-3e6243dc7891 resume_offset=698368
vt.handoff=7
ProcVersionSignature: Ubuntu 5.11.0-40.44~20.04.2-generic 5.11.22
RelatedPackageVersions:
linux-restricted-modules-5.11.0-40-generic N/A
linux-backports-modules-5.11.0-40-generic N/A
linux-firmware 1.187.20
Tags: focal
Uname: Linux 5.11.0-40-generic x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin lxd plugdev sambashare sudo
_MarkForUpload: True
dmi.bios.date: 04/20/2021
dmi.bios.release: 1.52
dmi.bios.vendor: HP
dmi.bios.version: N75 Ver. 01.52
dmi.board.name: 807C
dmi.board.vendor: HP
dmi.board.version: KBC Version 85.79
dmi.chassis.asset.tag: 5CG60906BD
dmi.chassis.type: 10
dmi.chassis.vendor: HP
dmi.ec.firmware.release: 133.121
dmi.modalias:
dmi:bvnHP:bvrN75Ver.01.52:bd04/20/2021:br1.52:efr133.121:svnHP:pnHPEliteBook820G3:pvr:skuL4Q17AV:rvnHP:rn807C:rvrKBCVersion85.79:cvnHP:ct10:cvr:
dmi.product.family: 103C_5336AN G=N L=BUS B=HP S=ELI
dmi.product.name: HP EliteBook 820 G3
dmi.product.sku: L4Q17AV
dmi.sys.vendor: HP
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