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FS#44419 - [pulseaudio] Thinkpad T440S + Ultra Docking Station Audio Problems since Pulseaudio 6.0

Attached to Project: Arch Linux
Opened by Thomas Zelch (eltom) - Tuesday, 31 March 2015, 17:24 GMT
Last edited by Doug Newgard (Scimmia) - Wednesday, 01 April 2015, 00:35 GMT
Task Type Bug Report
Category Packages: Extra
Status Assigned
Assigned To Jan Alexander Steffens (heftig)
Architecture All
Severity Low
Priority Normal
Reported Version
Due in Version Undecided
Due Date Undecided
Percent Complete 0%
Votes 0
Private No



Since update to Pulseaudio 6.0, there is a weird behaviour when docking in / out the laptop.

The following are default Volume Values in amixer / alsamixer:

Not in Dock:
Speakers: 100%
Headphonejack: 0%
Speaker+LO: 100% (LO Stands for the Lineout of the Dock)

Speakers: 0%
Headphonejack: 100%
Speaker+LO: 0%

That causes Sound not to work with the external Speakers as soon as i dock in the laptop.
Everything was working fine with Pulseaudio 5.

What's more interesting, when the laptop is docked in and i change the Volume of the Headphonejack, nothing changes, but if i mute it, the master gets muted as well.
If anybody can give me tips on howto further debug this problem, i would be thankful!

Thinkpad T440S + Ultra Dock

[tze@t440s ~]$ uname -a
Linux t440s 3.19.2-1-ARCH #1 SMP PREEMPT Wed Mar 18 16:21:02 CET 2015 x86_64 GNU/Linux

[tze@t440s ~]$ pacman -Q | egrep -i '(pulseaudio|alsa)'
alsa-lib 1.0.29-1
alsa-plugins 1.0.29-2
alsa-utils 1.0.29-1
lib32-alsa-lib 1.0.29-1
lib32-alsa-plugins 1.0.29-2
pulseaudio 6.0-1
pulseaudio-alsa 2-3
pulseaudio-ctl 1.42-1
zita-alsa-pcmi 0.2.0-2
This task depends upon

Comment by Max Mustermann (dosBoss) - Saturday, 09 May 2015, 21:36 GMT
I'm having the same problem for some time. Plugging in speakers into the dock mutes Speaker+LO and unmutes Headphone in alsamixer, even though Speaker+LO controls the dock output. This is the same behavior as with the laptops audio jack, but in this case the alsa Headphone output is correct.

I checked my pacman log and updated from pulseaudio 5.0-1 to 6.0-1 on 27.02.2015 which could very likely be the time I started to encounter this issue.

Have you found a solution to this yet?
Comment by Jan Alexander Steffens (heftig) - Sunday, 10 May 2015, 00:32 GMT
This is probably due to changes to the mixer paths in /usr/share/pulseaudio/alsa-mixer/paths .

Please make an upstream bug report:
Also try to isolate the problem if you can.