Lenovo Y550P-4CWI is not available anymore, so I re-verified this issue
on another laptop - Acer Aspire 7560G (Radeon HD 6620G+6650M). This time
I tested with Kubuntu 18,10 daily image, instead of Kubuntu 17.10.
With Radeon driver digital output is disabled by default, so audio goes
to internal audio adapter. Also when I enabled HDMI output manually in
System Settings, it priority remain below internal audio adapter which
is desired behaviour.
Unfortunately, I can no longer verify if issue is present with nouveau,
but let's hope it's fixed there too. For the time being, I close this
report.
** Changed in: pulseaudio (Ubuntu)
Status: Incomplete => Fix Released
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Touch seeded packages, which is subscribed to pulseaudio in Ubuntu.
https://bugs.launchpad.net/bugs/606579
Title:
Digital output has a higher priority than analog output
Status in pulseaudio package in Ubuntu:
Fix Released
Bug description:
Binary package hint: phonon
Digital output (nVidia GT216M HDMI) has a higher priority than analog output
(hda_codec: ALC272) in Ubuntu Maverick.
In result after boot LiveCD/DVD on laptop (Lenovo Y550P-4CWI) user not hear
any sound.
Analog outputs should have higher priority by default.
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