Public bug reported:
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_component_bind_ops [i915])
[ 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_codec_realtek hdaudioC0D0: autoconfig for ALC285:
line_outs=2 (0x14/0x17/0x0/0x0/0x0) type:speaker
[ 4.430085] snd_hda_codec_realtek hdaudioC0D0: speaker_outs=0
(0x0/0x0/0x0/0x0/0x0)
[ 4.430087] snd_hda_codec_realtek hdaudioC0D0: hp_outs=1
(0x21/0x0/0x0/0x0/0x0)
[ 4.430087] snd_hda_codec_realtek hdaudioC0D0: mono: mono_out=0x0
[ 4.430088] snd_hda_codec_realtek hdaudioC0D0: inputs:
[ 4.430089] snd_hda_codec_realtek hdaudioC0D0: Mic=0x19
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_component_bind_ops [i915])
[ 3.173463] snd_soc_skl 0000:00:1f.3: Direct firmware load for
9dc8-LENOVO-TP-N2H-4752-tplg.bin failed with error -2
[ 3.173465] snd_soc_skl 0000:00:1f.3: tplg fw
9dc8-LENOVO-TP-N2H-4752-tplg.bin load failed with -2, falling back to
dfw_sst.bin
[ 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_dsp_generic: ASoC: failed to
instantiate card -2
[ 3.173508] skl_hda_dsp_generic: probe of skl_hda_dsp_generic failed with
error -2
I've attached `lspci -vnvn` and `dmesg` output for both the -40 and -42 kernels.
ProblemType: Bug
DistroRelease: Ubuntu 19.10
Package: linux-image-5.3.0-40-generic 5.3.0-40.32
ProcVersionSignature: Ubuntu 5.3.0-40.32-generic 5.3.18
Uname: Linux 5.3.0-40-generic x86_64
ApportVersion: 2.20.11-0ubuntu8.6
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: gamache 1768 F.... pulseaudio
/dev/snd/controlC1: gamache 1768 F.... pulseaudio
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-256color
PATH=(custom, no user)
XDG_RUNTIME_DIR=<set>
LANG=en_US.UTF-8
SHELL=/bin/bash
ProcFB: 0 i915drmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.3.0-40-generic
root=UUID=90290cff-6557-4384-b8a9-1b83f860ea01 ro quiet splash vt.handoff=7
RelatedPackageVersions:
linux-restricted-modules-5.3.0-40-generic N/A
linux-backports-modules-5.3.0-40-generic N/A
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.asset.tag: Not Available
dmi.board.name: 20QD0007US
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.modalias:
dmi:bvnLENOVO:bvrN2HET46W(1.29):bd02/21/2020:svnLENOVO:pn20QD0007US:pvrThinkPadX1Carbon7th:rvnLENOVO:rn20QD0007US:rvrSDK0J40697WIN:cvnLENOVO:ct10:cvrNone:
dmi.product.family: ThinkPad X1 Carbon 7th
dmi.product.name: 20QD0007US
dmi.product.sku: LENOVO_MT_20QD_BU_Think_FM_ThinkPad X1 Carbon 7th
dmi.product.version: ThinkPad X1 Carbon 7th
dmi.sys.vendor: LENOVO
** Affects: linux (Ubuntu)
Importance: Undecided
Status: Confirmed
** Tags: amd64 apport-bug eoan
** Attachment added: "Contains `lspci -vnvn` and `dmesg` output for the
5.3.0-40 and -42 kernels."
https://bugs.launchpad.net/bugs/1868165/+attachment/5339013/+files/gamache-bug-materials.tgz
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https://bugs.launchpad.net/bugs/1868165
Title:
[X1 Carbon 7th ed] 5.3.0-42 loses internal audio; regression from
5.3.0-40
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