Re: snd_hda_intel preventing hdmi monitor to wake up from sleep

Kai Vehmanen <[email protected]> Mon, 12 Oct 2020 18:45:29 +0300 (EEST)

Newsgroups	gmane.linux.alsa.user
Organization	Intel Finland Oy - BIC 0357606-4 - Westendinkatu 7 02160 Espoo
Message-ID	<[email protected]>

Hi,

On Mon, 12 Oct 2020, NoÃš Murr wrote:

> When I load the module everything is back to how it was before.
> Attached you can find both the alsa-info before `modeprobe -v
> snd_hda_intel enable=Y,N` and after that.

thanks. The log looks as expected, only the ALC1220 codec is enabled
with the PCH HDA controller, so the 'enable' param took effect.

Hmm, looks strange. It starts to look like it's the i915 acomp init that 
is somehow interfering with the discrete GPU. Unfortunately we have no
runtime flags to avoid this, without modifying kernel code.

If you are not using internal graphics, you can try blacklisting "i915" 
module. This should force the acomp_init to fail.

PS Takashi, the modprobe.d array parsing was a false alarm.. I had 
   typo in my conf file. :) Now it works as expected.

Br, Kai

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