*** This bug is a duplicate of bug 1574582 ***
https://bugs.launchpad.net/bugs/1574582
** This bug has been marked a duplicate of bug 1574582
HP lt4120 Snapdragon X5 LTE USB modem not recognized by network-manager
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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.
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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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