dummy output ubuntu 20.04 LTS dell inspiron 3420

Bug #1874465 reported by Fernanda Barreto Fonseca on 2020-04-23
This bug affects 6 people
Affects Status Importance Assigned to Milestone
linux (Ubuntu)

Bug Description

in sound settings there is only dummy output, everything worked until April, 21 2020 when updated 18.04 LTS to 20.04 LTS via terminal.

Description: Ubuntu 20.04 LTS
Release: 20.04

  Installed: 1.0.25+dfsg-0ubuntu5
  Candidate: 1.0.25+dfsg-0ubuntu5
  Version table:
 *** 1.0.25+dfsg-0ubuntu5 500
        500 http://br.archive.ubuntu.com/ubuntu focal/main amd64 Packages
        500 http://br.archive.ubuntu.com/ubuntu focal/main i386 Packages
        100 /var/lib/dpkg/status

  Installed: 4.0-1build1
  Candidate: 4.0-1build1
  Version table:
 *** 4.0-1build1 500
        500 http://br.archive.ubuntu.com/ubuntu focal/universe amd64 Packages
        100 /var/lib/dpkg/status

ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: linux-image-5.4.0-26-generic 5.4.0-26.30
ProcVersionSignature: Ubuntu 5.4.0-26.30-generic 5.4.30
Uname: Linux 5.4.0-26-generic x86_64
ApportVersion: 2.20.11-0ubuntu27
Architecture: amd64
 /dev/snd/controlC0: ploosh 1949 F.... pulseaudio
CasperMD5CheckResult: skip
CurrentDesktop: ubuntu:GNOME
Date: Thu Apr 23 11:35:40 2020
InstallationDate: Installed on 2019-10-06 (199 days ago)
InstallationMedia: Ubuntu 18.04.3 LTS "Bionic Beaver" - Release amd64 (20190805)
MachineType: Dell Inc. Inspiron 3420
ProcFB: 0 i915drmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.4.0-26-generic root=UUID=ec870298-2798-4d1b-a6d2-6118c2078d5e ro quiet splash vt.handoff=7
 linux-restricted-modules-5.4.0-26-generic N/A
 linux-backports-modules-5.4.0-26-generic N/A
 linux-firmware 1.187
SourcePackage: linux
UpgradeStatus: Upgraded to focal on 2020-04-22 (1 days ago)
dmi.bios.date: 11/04/2013
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A11
dmi.board.name: 04XGDT
dmi.board.vendor: Dell Inc.
dmi.board.version: A11
dmi.chassis.type: 8
dmi.chassis.vendor: Dell Inc.
dmi.chassis.version: Not Specified
dmi.modalias: dmi:bvnDellInc.:bvrA11:bd11/04/2013:svnDellInc.:pnInspiron3420:pvrNotSpecified:rvnDellInc.:rn04XGDT:rvrA11:cvnDellInc.:ct8:cvrNotSpecified:
dmi.product.name: Inspiron 3420
dmi.product.sku: To be filled by O.E.M.
dmi.product.version: Not Specified
dmi.sys.vendor: Dell Inc.

description: updated
summary: - dummy output ubuntu 20.04 LTS dell inspiron 14 (N4050)
+ dummy output ubuntu 20.04 LTS dell inspiron 3420

This change was made by a bot.

Changed in linux (Ubuntu):
status: New → Confirmed
chionatan (chionatan) wrote :

Same bug, Dell Latitude 5480, updated from 18.04 LTS to 20.04 from Terminal.
Version: Ubuntu 5.4.0-26.30-generic 5.4.30
If it is any useful,`alsa force-reload` after boot recovers audio devices. Not really a patch, however.

Hui Wang (hui.wang) wrote :


this is duplicate bug of #1875252, please help collect the log according to https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1875252/comments/5


Hui Wang (hui.wang) wrote :

OK, it is highly possible that this is a regression introduced by the fix of https://bugs.launchpad.net/oem-priority/+bug/1869819

We will fix it in the ubuntu pulseaudio.

chionatan (chionatan) wrote :

This bug is flagged as duplicate of bug #1876065. However:
1. The bug description of #1876065 does not match the issue I have, which is the one described here.
2. Even if #1876065 is now fixed, and my system is up-to-date (pulseaudio 13.99.1), I'm still having the issue: no device is shown upon each reboot, only dummy output.

The only way around for me is to `alsa force-reload` until I get the devices listed ("speakers","HDMI","Headset").
How should I proceed? Should I open a new bug? This is quite urgent, as nowadays most of my work activity relies on conversations through my laptop.

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