[alsa-devel] No sound from Headphone Jack over Lenovo Docking Station with T440p Laptop

Bernhard schlimmchen at yahoo.de
Wed Feb 12 22:01:09 CET 2014

Raymond Yau <superquad.vortex2 <at> gmail.com> writes:
> Post the output of alsa-info.sh when thinkpad is docked and not docked with
> headphone pluggedd and unplugged

I created the output you requested (Lenovo ThinkPad T440p in UltraDock, no 
sound when docked via dock jack but notebook speakers are also mute).

not docked: http://pastebin.com/MFQT3R9S
docked, no headphones: http://pastebin.com/8UN1sHSM
docked, headphones plugged in dock: http://pastebin.com/7XauZLZz
docked, headphones plugged in notebook: http://pastebin.com/xfL5qkge

Based on that, can you help us getting sound to work on the dock?


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