Public bug reported:
I have a Thinkpad T450s. The sound works normally unless it is plugged
in to the docking station (a ThinkPad Ultra Dock). In that case the
internal speakers get disabled correctly, but the output of the docking
station does not work. Speakers which are plugged in directly on the
Laptop still work.
ProblemType: Bug
DistroRelease: Ubuntu 15.04
Package: linux-image-3.19.0-13-generic 3.19.0-13.13
ProcVersionSignature: Ubuntu 3.19.0-13.13-generic 3.19.3
Uname: Linux 3.19.0-13-generic x86_64
ApportVersion: 2.17-0ubuntu2
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: daniel 1739 F.... pulseaudio
/dev/snd/controlC1: daniel 1739 F.... pulseaudio
CurrentDesktop: Unity
Date: Tue Apr 14 12:58:35 2015
HibernationDevice: RESUME=UUID=a67a91aa-8c15-4693-be37-7c177747bc39
InstallationDate: Installed on 2015-04-04 (9 days ago)
InstallationMedia: It
MachineType: LENOVO 20BWS03E00
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.19.0-13-generic
root=UUID=1643390a-82a8-405a-b938-057879ff3c9c ro quiet splash vt.handoff=7
RelatedPackageVersions:
linux-restricted-modules-3.19.0-13-generic N/A
linux-backports-modules-3.19.0-13-generic N/A
linux-firmware 1.143
SourcePackage: linux
UpgradeStatus: Upgraded to vivid on 2015-04-04 (9 days ago)
dmi.bios.date: 12/23/2014
dmi.bios.vendor: LENOVO
dmi.bios.version: JBET41WW (1.06 )
dmi.board.asset.tag: Not Available
dmi.board.name: 20BWS03E00
dmi.board.vendor: LENOVO
dmi.board.version: Not Defined
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: None
dmi.modalias:
dmi:bvnLENOVO:bvrJBET41WW(1.06):bd12/23/2014:svnLENOVO:pn20BWS03E00:pvrThinkPadT450s:rvnLENOVO:rn20BWS03E00:rvrNotDefined:cvnLENOVO:ct10:cvrNone:
dmi.product.name: 20BWS03E00
dmi.product.version: ThinkPad T450s
dmi.sys.vendor: LENOVO
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug vivid
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https://bugs.launchpad.net/bugs/1443888
Title:
No sound on ThinkPad docking station
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