I tried the latest mainline (v5.10-rc5) and still have no audio.
extract from previously working dmesg
```bash
$ egrep -i 'sound|audio|snd|hda' dmesg-5.4.0-52.txt
kernel: ACPI: Added _OSI(Linux-Lenovo-NV-HDMI-Audio)
kernel: snd_hda_intel 0000:00:1f.3: bound 0000:00:02.0 (ops
i915_audio_component_bind_ops [i915])
kernel: snd_hda_codec_realtek hdaudioC0D0: autoconfig for ALC298: line_outs=1
(0x21/0x0/0x0/0x0/0x0) type:line
kernel: snd_hda_codec_realtek hdaudioC0D0: speaker_outs=1
(0x14/0x0/0x0/0x0/0x0)
kernel: snd_hda_codec_realtek hdaudioC0D0: hp_outs=1 (0x17/0x0/0x0/0x0/0x0)
kernel: snd_hda_codec_realtek hdaudioC0D0: mono: mono_out=0x0
kernel: snd_hda_codec_realtek hdaudioC0D0: inputs:
kernel: snd_hda_codec_realtek hdaudioC0D0: Mic=0x18
kernel: input: HDA Intel PCH Mic as
/devices/pci0000:00/0000:00:1f.3/sound/card0/input20
kernel: input: HDA Intel PCH Headphone as
/devices/pci0000:00/0000:00:1f.3/sound/card0/input21
kernel: input: HDA Intel PCH Dock Headphone as
/devices/pci0000:00/0000:00:1f.3/sound/card0/input22
kernel: input: HDA Intel PCH HDMI/DP,pcm=3 as
/devices/pci0000:00/0000:00:1f.3/sound/card0/input23
kernel: input: HDA Intel PCH HDMI/DP,pcm=7 as
/devices/pci0000:00/0000:00:1f.3/sound/card0/input24
kernel: input: HDA Intel PCH HDMI/DP,pcm=8 as
/devices/pci0000:00/0000:00:1f.3/sound/card0/input25
kernel: input: HDA Intel PCH HDMI/DP,pcm=9 as
/devices/pci0000:00/0000:00:1f.3/sound/card0/input26
kernel: input: HDA Intel PCH HDMI/DP,pcm=10 as
/devices/pci0000:00/0000:00:1f.3/sound/card0/input27
```
Compare to current:
```bash
$ dmesg | egrep -i 'sound|audio|snd|hda'
[ 0.150788] ACPI: Added _OSI(Linux-Lenovo-NV-HDMI-Audio)
[ 13.357495] snd_hda_intel 0000:00:1f.3: DSP detected with PCI
class/subclass/prog-if info 0x040100
[ 13.357500] snd_hda_intel 0000:00:1f.3: Digital mics found on Skylake+
platform, using SST driver
[ 13.382323] snd_soc_skl 0000:00:1f.3: DSP detected with PCI
class/subclass/prog-if info 0x040100
[ 13.382327] snd_soc_skl 0000:00:1f.3: Digital mics found on Skylake+
platform, using SST driver
[ 13.388130] snd_soc_skl 0000:00:1f.3: bound 0000:00:02.0 (ops
i915_audio_component_bind_ops [i915])
[ 13.444116] HDMI HDA Codec ehdaudio0D2: Max dais supported: 3
```
** Changed in: linux (Ubuntu)
Status: Incomplete => Confirmed
** Description changed:
After upgrading to Groovy, my sound cards no longer work. Alsa-info says "no
soundcards detected"
---
ProblemType: Bug
ApportVersion: 2.20.11-0ubuntu50
Architecture: amd64
AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/seq',
'/dev/snd/timer'] failed with exit code 1:
CasperMD5CheckResult: skip
CurrentDesktop: XFCE
DistroRelease: Ubuntu 20.10
InstallationDate: Installed on 2019-07-25 (465 days ago)
InstallationMedia: Xubuntu 19.04 "Disco Dingo" - Release amd64 (20190416)
Lsusb:
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 007: ID 8087:0025 Intel Corp. Wireless-AC 9260 Bluetooth
Adapter
Bus 001 Device 006: ID 06cb:0081 Synaptics, Inc.
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Lsusb-t:
/: Bus 02.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/6p, 5000M
/: Bus 01.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/12p, 480M
|__ Port 5: Dev 6, If 0, Class=Vendor Specific Class, Driver=, 12M
|__ Port 8: Dev 7, If 1, Class=Wireless, Driver=btusb, 12M
|__ Port 8: Dev 7, If 0, Class=Wireless, Driver=btusb, 12M
MachineType: LENOVO 81C4
Package: linux (not installed)
ProcFB: 0 i915drmfb
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-5.8.0-26-generic
root=/dev/mapper/xubuntu--c930-root ro quiet splash vt.handoff=7
ProcVersionSignature: Ubuntu 5.8.0-26.27-generic 5.8.14
RelatedPackageVersions:
linux-restricted-modules-5.8.0-26-generic N/A
linux-backports-modules-5.8.0-26-generic N/A
linux-firmware 1.190
Tags: groovy
Uname: Linux 5.8.0-26-generic x86_64
UnreportableReason: This report is about a package that is not installed.
UpgradeStatus: Upgraded to groovy on 2020-10-30 (2 days ago)
UserGroups: adm cdrom dialout dip i2c input lpadmin plugdev sambashare sudo
video
_MarkForUpload: False
dmi.bios.date: 10/09/2018
dmi.bios.release: 1.32
dmi.bios.vendor: LENOVO
dmi.bios.version: 8GCN32WW
dmi.board.asset.tag: NO Asset Tag
dmi.board.name: LNVNB161216
dmi.board.vendor: LENOVO
dmi.board.version: SDK0R32862 WIN
dmi.chassis.asset.tag: NO Asset Tag
dmi.chassis.type: 31
dmi.chassis.vendor: LENOVO
dmi.chassis.version: Lenovo YOGA C930-13IKB
dmi.ec.firmware.release: 1.32
dmi.modalias:
dmi:bvnLENOVO:bvr8GCN32WW:bd10/09/2018:br1.32:efr1.32:svnLENOVO:pn81C4:pvrLenovoYOGAC930-13IKB:rvnLENOVO:rnLNVNB161216:rvrSDK0R32862WIN:cvnLENOVO:ct31:cvrLenovoYOGAC930-13IKB:
dmi.product.family: YOGA C930-13IKB
dmi.product.name: 81C4
dmi.product.sku: LENOVO_MT_81C4_BU_idea_FM_YOGA C930-13IKB
dmi.product.version: Lenovo YOGA C930-13IKB
dmi.sys.vendor: LENOVO
+ ---
+ ProblemType: Bug
+ ApportVersion: 2.20.11-0ubuntu50.1
+ Architecture: amd64
+ CasperMD5CheckResult: skip
+ CurrentDesktop: XFCE
+ DistroRelease: Ubuntu 20.10
+ InstallationDate: Installed on 2019-07-25 (487 days ago)
+ InstallationMedia: Xubuntu 19.04 "Disco Dingo" - Release amd64 (20190416)
+ Package: linux (not installed)
+ Tags: groovy
+ Uname: Linux 5.10.0-051000rc5-generic x86_64
+ UnreportableReason: The running kernel is not an Ubuntu kernel
+ UpgradeStatus: Upgraded to groovy on 2020-10-30 (24 days ago)
+ UserGroups: adm cdrom dialout dip i2c input lpadmin plugdev sambashare sudo
video
+ _MarkForUpload: True
--
You received this bug notification because you are a member of Ubuntu
Bugs, which is subscribed to Ubuntu.
https://bugs.launchpad.net/bugs/1902457
Title:
regression: no sound cards detected on lenovo yoga c930 after
focal->groovy upgrade
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1902457/+subscriptions
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