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
This bug is missing log files that will aid in diagnosing the problem. While running an Ubuntu kernel (not a mainline or third-party kernel) please enter the following command in a terminal window:
apport-collect 1950385
and then change the status of the bug to 'Confirmed'.
If, due to the nature of the issue you have encountered, you are unable to run this command, please add a comment stating that fact and change the bug status to 'Confirmed'.
This change has been made by an automated script, maintained by the Ubuntu Kernel Team.