You have been subscribed to a public bug:
After updating to Ubuntu 20.04 LTS, the only way of hearing audio is
through headphones. The sound settings tab doesn't even show any other
output option other than "Dummy output" . I have already checked other
versions and everything works perfectly when I downgrade to Ubuntu
19.10, so I think this is a version related bug. Just to reiterate my
laptop is a DELL Inspiron 14 3420.The sound card showing in alsamixer
window is HDA Intel PCH, and the chip is Cirrus Logic CS4213. I have
looked up solutions online for 2 days and none has worked.
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
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: george 1499 F.... pulseaudio
CasperMD5CheckResult: skip
CurrentDesktop: ubuntu:GNOME
Date: Sun Apr 26 19:04:06 2020
InstallationDate: Installed on 2020-04-26 (0 days ago)
InstallationMedia: Ubuntu 19.10 "Eoan Ermine" - Release amd64 (20191017)
MachineType: Dell Inc. Inspiron 3420
ProcFB: 0 i915drmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.4.0-26-generic
root=UUID=ec9a2552-c1da-44bd-9967-5be8bc6da075 ro quiet splash vt.handoff=7
RelatedPackageVersions:
linux-restricted-modules-5.4.0-26-generic N/A
linux-backports-modules-5.4.0-26-generic N/A
linux-firmware 1.187
RfKill:
0: phy0: Wireless LAN
Soft blocked: no
Hard blocked: no
SourcePackage: linux
UpgradeStatus: Upgraded to focal on 2020-04-26 (0 days ago)
dmi.bios.date: 09/28/2012
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A05
dmi.board.name: 04XGDT
dmi.board.vendor: Dell Inc.
dmi.board.version: A05
dmi.chassis.type: 8
dmi.chassis.vendor: Dell Inc.
dmi.chassis.version: Not Specified
dmi.modalias:
dmi:bvnDellInc.:bvrA05:bd09/28/2012:svnDellInc.:pnInspiron3420:pvrNotSpecified:rvnDellInc.:rn04XGDT:rvrA05: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.
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug focal
--
Ubuntu 20.04 LTS update causing no sound coming from built-in speakers
https://bugs.launchpad.net/bugs/1875252
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