Mobile broadband does not work after suspend on Thinkpad t460s with built-in Sierra Wireless EM7455. It switches constantly on and off then (the icon). The only solution I see to repair the situation is to go to Windows and switching on there (reboot or shutdown does not help; didn't try hard reset). After check in Settings > Mobile Broadband > Modem Details it looks like that after sleep modem's sim is not recognised anymore i.e.:
- modem is recognised (Settings > Mobile Network > Modem Details >>> Device Details is populated correctly), but 'Modem Status' section in Modem Details window shows Carrier (nothing), Network Type: unknown, Signal Strenght: 0%, Network Status: Unknown) - that is of course with Mobile Network switch on.
Restarting Network Manager does not help.
My report is not filed about a specific source package so if someone know which packages to point to it would be helpful. Also I don't know how to use cli to check sth. so help needed.
PS.1. This behavior is featured in archive / net in different combinations (lid, work only after suspend, and so on).
PS.2. The error occurs also every time in newest Fedora, EndeavourOS (Arch based) and Manjaro (custom kernels, Arch based). Debian live hangs on suspend as Ubuntu before so I can't check.
PS.3. So it looks like it is kernel problem?
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ProblemType: Bug
ApportVersion: 2.20.11-0ubuntu82.1
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: x 1799 F.... pulseaudio
CasperMD5CheckResult: unknown
CurrentDesktop: ubuntu:GNOME
DistroRelease: Ubuntu 22.04
Lsusb:
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 004: ID 058f:9540 Alcor Micro Corp. AU9540 Smartcard Reader
Bus 001 Device 003: ID 046d:c52b Logitech, Inc. Unifying Receiver
Bus 001 Device 007: ID 1199:9079 Sierra Wireless, Inc. EM7455
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
MachineType: LENOVO 20FAS0B000
Package: linux (not installed)
ProcFB: 0 i915drmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.15.0-48-generic root=UUID=c5109461-1cbf-452e-b76d-a13b0e90ca86 ro quiet splash vt.handoff=7
ProcVersionSignature: Ubuntu 5.15.0-48.54-generic 5.15.53
RelatedPackageVersions:
linux-restricted-modules-5.15.0-48-generic N/A
linux-backports-modules-5.15.0-48-generic N/A
linux-firmware 20220329.git681281e4-0ubuntu3.5
Tags: jammy wayland-session
Uname: Linux 5.15.0-48-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: 07/06/2022
dmi.bios.release: 1.56
dmi.bios.vendor: LENOVO
dmi.bios.version: N1CET88W (1.56 )
dmi.board.asset.tag: Not Available
dmi.board.name: 20FAS0B000
dmi.board.vendor: LENOVO
dmi.board.version: SDK0J40697 WIN
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: None
dmi.ec.firmware.release: 1.14
dmi.modalias: dmi:bvnLENOVO:bvrN1CET88W(1.56):bd07/06/2022:br1.56:efr1.14:svnLENOVO:pn20FAS0B000:pvrThinkPadT460s:rvnLENOVO:rn20FAS0B000:rvrSDK0J40697WIN:cvnLENOVO:ct10:cvrNone:skuLENOVO_MT_20FA_BU_Think_FM_ThinkPadT460s:
dmi.product.family: ThinkPad T460s
dmi.product.name: 20FAS0B000
dmi.product.sku: LENOVO_MT_20FA_BU_Think_FM_ThinkPad T460s
dmi.product.version: ThinkPad T460s
dmi.sys.vendor: LENOVO
Thank you for taking the time to report this bug and helping to make Ubuntu better. It seems that your bug report is not filed about a specific source package though, rather it is just filed against Ubuntu in general. It is important that bug reports be filed about source packages so that people interested in the package can find the bugs about it. You can find some hints about determining what package your bug might be about at https:/
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