Dear all,
(please cc)
I am trying to get HDMI audio output via a Lenovo Dock Ultra in combination with a Lenovo Thinkpad X260.
When plugging the HDMI device (screen) directly into the laptop, audio output can be selected in pavucontrol / Configuration, but when the laptop is connected via the dock all the HDMI devices appear as unplugged.
I have googled a bit and found a similar case for T430: http://permalink.gmane.org/gmane.linux.alsa.user/36896 and checking the source code of snd_hda_intel it seems that options snd-hda-intel model=lenovo-dock should help, but indeed it didn't.
I am running Debian/sid, on today's git kernel (4.9.0-rc5+).
I attach the output of alsa-info.
Please let me know whether I can try some more tweaks.
Thanks a lot
Norbert
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