Thank you for reporting this and helping make Ubuntu better. Could you
please boot into a Ubuntu kernel (not third party kernel) and execute
the following command only once, as it will automatically gather
debugging information, in a terminal:
$ apport-collect 2102208
Perhaps you may want to capture the information twice, before and after
passed through to a Windows VM.
** Changed in: linux (Ubuntu)
Status: New => Incomplete
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https://bugs.launchpad.net/bugs/2102208
Title:
Lenovo ThinkPad USB-C Dock Gen2 USB Audio does not output audio
Status in linux package in Ubuntu:
Incomplete
Bug description:
The 3,5mm jack of the ThinkPad USB-C Dock Gen2 does not output any
sounds.
The USB Device is 17ef:30d1 Lenovo ThinkPad USB-C Dock Gen2 USB Audio
On the software side everything seems normal, I see output controls
and everything.
As soon as this USB is passed through to a Windows VM and back, sound
works.
A quick look in snd-usb-audio gave no clue and I have no idea how to
debug such things, but Windows seems to do some magic when
initializing this device. That Initializations seems to be persistent
until powerdown
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