[X1 Carbon 7th ed] 5.3.0-42 loses internal audio; regression from 5.3.0-40
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
linux (Ubuntu) |
Confirmed
|
Undecided
|
Unassigned |
Bug Description
I have a Lenovo ThinkPad X1 Carbon 7th edition laptop running Ubuntu 19.10 desktop. I recently applied a software update that contained a new kernel, 5.3.0-42, and upon restarting, the internal audio interface was not found; internal speakers and the headphone output were unusable.
Upon rebooting with the previous kernel, 5.3.0-40, the problem went away again. Subsequent testing confirms this is repeatable.
Some relevant lines from `dmesg` follow.
On kernel 5.3.0-40 (working):
[ 4.386007] snd_hda_intel 0000:00:1f.3: bound 0000:00:02.0 (ops i915_audio_
[ 4.391825] ieee80211 phy0: Selected rate control algorithm 'iwl-mvm-rs'
[ 4.392016] thermal thermal_zone5: failed to read out thermal zone (-61)
[ 4.430083] snd_hda_
[ 4.430085] snd_hda_
[ 4.430087] snd_hda_
[ 4.430087] snd_hda_
[ 4.430088] snd_hda_
[ 4.430089] snd_hda_
On kernel 5.3.0-42 (broken):
[ 3.076809] i915 0000:00:02.0: fb0: i915drmfb frame buffer device
[ 3.088029] snd_soc_skl 0000:00:1f.3: bound 0000:00:02.0 (ops i915_audio_
[ 3.173463] snd_soc_skl 0000:00:1f.3: Direct firmware load for 9dc8-LENOVO-
[ 3.173465] snd_soc_skl 0000:00:1f.3: tplg fw 9dc8-LENOVO-
[ 3.173480] snd_soc_skl 0000:00:1f.3: Direct firmware load for dfw_sst.bin failed with error -2
[ 3.173481] snd_soc_skl 0000:00:1f.3: Fallback tplg fw dfw_sst.bin load failed with -2
[ 3.173484] snd_soc_skl 0000:00:1f.3: Failed to init topology!
[ 3.173486] snd_soc_skl 0000:00:1f.3: ASoC: failed to probe component -2
[ 3.173496] skl_hda_dsp_generic skl_hda_
[ 3.173508] skl_hda_
I've attached `lspci -vnvn` and `dmesg` output for both the -40 and -42 kernels.
ProblemType: Bug
DistroRelease: Ubuntu 19.10
Package: linux-image-
ProcVersionSign
Uname: Linux 5.3.0-40-generic x86_64
ApportVersion: 2.20.11-0ubuntu8.6
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/
/dev/snd/
CurrentDesktop: ubuntu:GNOME
Date: Thu Mar 19 15:08:14 2020
InstallationDate: Installed on 2019-11-21 (119 days ago)
InstallationMedia: Ubuntu 19.10 "Eoan Ermine" - Release amd64 (20191017)
MachineType: LENOVO 20QD0007US
ProcEnviron:
TERM=xterm-
PATH=(custom, no user)
XDG_RUNTIME_
LANG=en_US.UTF-8
SHELL=/bin/bash
ProcFB: 0 i915drmfb
ProcKernelCmdLine: BOOT_IMAGE=
RelatedPackageV
linux-
linux-
linux-firmware 1.183.4
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 02/21/2020
dmi.bios.vendor: LENOVO
dmi.bios.version: N2HET46W (1.29 )
dmi.board.
dmi.board.name: 20QD0007US
dmi.board.vendor: LENOVO
dmi.board.version: SDK0J40697 WIN
dmi.chassis.
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.
dmi.modalias: dmi:bvnLENOVO:
dmi.product.family: ThinkPad X1 Carbon 7th
dmi.product.name: 20QD0007US
dmi.product.sku: LENOVO_
dmi.product.
dmi.sys.vendor: LENOVO
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