$ cat /sys/module/snd_hda_intel/parameters/power_save 0
On Fri, 2021-01-01 at 14:29 +0100, Lars-Peter Clausen wrote:
On 1/1/21 2:25 PM, Christian Labisch wrote:
Hi Takashi,
Thanks for your suggestion - unfortunately it does not work. Still no sound after adding the boot parameter and a reboot.
Can you run `cat /sys/module/snd_hda_intel/parameters/power_save` and check whether it is still 0 when the system is running?
Regards, Christian
On Fri, 2021-01-01 at 13:09 +0100, Takashi Iwai wrote:
On Fri, 01 Jan 2021 12:10:23 +0100, Christian Labisch wrote:
Hi Lars,
Thanks for your response, as requested I ran alsa-info while playing audio. Please check the attached information - to me it looks like it being a bug. It should affect many users, will it be solved in the next release 5.10.5 ?
It's likely some runtime PM-related changes that caused this behavior change. But, there must be some program that sets the power_save option explicitly on your system. As dmesg shows, the default power_save to this device has been suppressed, but it's activated by the later action. On, 5.9.x, this didn't take effect, but on 5.10.x, this became effective, as it seems.
You can try to pass power_save=0 option to snd-hda-intel module (or boot with snd_hda_intel.power_save=0 boot option). It could work around the issue, although it's no solution.
thanks,
Takashi