No sound on Dell Latitude E6420 with Kernel 5.8.0

[Christer Wickman]

Hi

I have discover a odd bug on my laptop a Dell Latitude E6420 with the Kernel 5.8.0. When I try use sound on my laptop with this Kernel there is no sound. I decide to test another Kernel which is Kernel 5.4.0 and when I use it sounds comes out of the computer without any problem. The Linux I use i based on Ubuntu 20.04. And if I understand correctly there are reports that 5.8.0 has removed many sound cards and that might be the reason why my laptop doesn't have any sound with this Kernel. I hope this will be fix in the future.

Yours
Christer Wickman
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ProblemType: Bug
ApportVersion: 2.20.11-0ubuntu27.14
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: christerw 1637 F.... pipewire-media-
 /dev/snd/seq: christerw 1629 F.... pipewire
CasperMD5CheckResult: skip
CurrentDesktop: KDE
DistroRelease: Feren OS 20.04
InstallationDate: Installed on 2020-03-06 (317 days ago)
InstallationMedia: Feren OS 2019.12 "Yttrium" - Release amd64 (20191225)
MachineType: Dell Inc. Latitude E6420
Package: linux (not installed)
ProcFB: 0 i915drmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.8.0-38-generic root=UUID=a48b61f5-bd7c-4a33-a5e5-6376ece701e3 ro quiet splash vt.handoff=7
ProcVersionSignature: Ubuntu 5.8.0-38.43~20.04.1-generic 5.8.18
RelatedPackageVersions:
 linux-restricted-modules-5.8.0-38-generic N/A
 linux-backports-modules-5.8.0-38-generic N/A
 linux-firmware 1.187.7
Tags: focal
Uname: Linux 5.8.0-38-generic x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin plugdev sudo
_MarkForUpload: True
dmi.bios.date: 10/18/2011
dmi.bios.release: 4.6
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A08
dmi.board.name: 0K0DNP
dmi.board.vendor: Dell Inc.
dmi.board.version: A02
dmi.chassis.type: 9
dmi.chassis.vendor: Dell Inc.
dmi.modalias: dmi:bvnDellInc.:bvrA08:bd10/18/2011:br4.6:svnDellInc.:pnLatitudeE6420:pvr01:rvnDellInc.:rn0K0DNP:rvrA02:cvnDellInc.:ct9:cvr:
dmi.product.name: Latitude E6420
dmi.product.version: 01
dmi.sys.vendor: Dell Inc.

[Chris Guiver (guiverc)]

Thank you for taking the time to report this bug and helping to make Ubuntu better. Please execute the following command only once, as it will automatically gather debugging information, in a terminal:

apport-collect 1912037

When reporting bugs in the future please use apport by using 'ubuntu-bug' and the name of the package affected. You can learn more about this functionality at https://wiki.ubuntu.com/ReportingBugs.

[Ubuntu Kernel Bot (ubuntu-kernel-bot)]

This bug is missing log files that will aid in diagnosing the problem. While running an Ubuntu kernel (not a mainline or third-party kernel) please enter the following command in a terminal window:

apport-collect 1912037

and then change the status of the bug to 'Confirmed'.

If, due to the nature of the issue you have encountered, you are unable to run this command, please add a comment stating that fact and change the bug status to 'Confirmed'.

This change has been made by an automated script, maintained by the Ubuntu Kernel Team.

[Christer Wickman (wike1970)]

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[Christer Wickman (wike1970)]

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[Christer Wickman (wike1970)]

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[Christer Wickman (wike1970)]

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[Christer Wickman (wike1970)]

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[Christer Wickman (wike1970)]

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[Christer Wickman (wike1970)]

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[Christer Wickman (wike1970)]

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[Christer Wickman (wike1970)]

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[Christer Wickman (wike1970)]

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[Christer Wickman (wike1970)]

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[Christer Wickman (wike1970)]

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[Christer Wickman (wike1970)]

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[Christer Wickman (wike1970)]

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[Christer Wickman (wike1970)]

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[Christer Wickman (wike1970)]

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[Christer Wickman (wike1970)]

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[Christer Wickman (wike1970)]

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[Christer Wickman (wike1970)]

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[Ubuntu Kernel Bot (ubuntu-kernel-bot)]

This change was made by a bot.