Thank you for following up.
I have managed to complete a commit bisect of the Ubuntu kernels and can confirm that the first bad commit is 851cc40f47677174527a1decbd1074feacd15a93:
ALSA: hda: call runtime_allow() for all hda controllers
BugLink: https://bugs.launchpad.net/bugs/1876765
[ Upstream commit 9a6418487b566503c772cb6e7d3d44e652b019b0 ]
Regarding #15: I have tested and can confirm that "options snd_hda_intel power_save_controller=0" is also a valid workaround.
Regarding #16: I have reverted the workarounds, booted the test kernel and can confirm that this also fixes my detection problem.
Thank you for following up.
I have managed to complete a commit bisect of the Ubuntu kernels and can confirm that the first bad commit is 851cc40f4767717 4527a1decbd1074 feacd15a93:
ALSA: hda: call runtime_allow() for all hda controllers
BugLink: https:/ /bugs.launchpad .net/bugs/ 1876765
[ Upstream commit 9a6418487b56650 3c772cb6e7d3d44 e652b019b0 ]
Regarding #15: I have tested and can confirm that "options snd_hda_intel power_save_ controller= 0" is also a valid workaround.
Regarding #16: I have reverted the workarounds, booted the test kernel and can confirm that this also fixes my detection problem.