I am kinda new to Linux, but have been using Pop OS for over a year.
This issue has always been the case for me. Since I was on the 20.10 build till now. First some context.
Current version. 22.04lts Intel Celeron N4100 Mesa Intel 600UHD Graphics Connected Via HDMI to TV
How the issue presents-
Upon boot, everything works fine. But after a while, I lose audio. and the only way to get it back would be to open the settings app> sound > then toggle the audio device back to HDMI.
Sometimes it takes multiple (2-3) attempts to get this sorted.
But the kicker is, the second I click on the settings icon, the screen goes blank. And this stays blank for about 2-3mins then comes back on.
This blank screen thing also happens at times when I install or update certain apps eg. Plex. The screen just goes blank, then comes back on after a few minutes.
Oh, and I can prevent this from happening, if upon boot up, the first thing I do is open the settings app, and just leave it minimized in my dock. No (or at least hardly any) audio cutouts and no more blank screens. In this case, updating apps like Plex still causes the blank screen though.
Again, I am a Linux noob, so please, to anyone willing and capable of helping, anything you suggest I do or ask me to do, that requires the use of the terminal, kindly also provide instructions.
Are there any errors emitted when this happens if you have
journalctl -fkrunning in a terminal in the background?It happened again… ran journal thing…
Got this…
Jun 17 21:45:16 pop-os kernel: snd_hda_codec_realtek hdaudioC0D0: Unable to sync register 0x2b8000. -5
Jun 17 21:45:16 pop-os kernel: snd_hda_codec_realtek hdaudioC0D0: Unable to sync register 0x2b8000. -5
Jun 17 21:45:18 pop-os kernel: snd_hda_codec_realtek hdaudioC0D0: Unable to sync register 0x2b8000. -5
Jun 17 21:45:18 pop-os kernel: snd_hda_codec_realtek hdaudioC0D0: Unable to sync register 0x2b8000. -5
Jun 17 21:46:51 pop-os kernel: azx_single_wait_for_response: 738 callbacks suppressed
Jun 17 21:46:51 pop-os kernel: snd_hda_codec_realtek hdaudioC0D0: Unable to sync register 0x2b8000. -5
Jun 17 21:46:51 pop-os kernel: snd_hda_codec_realtek hdaudioC0D0: Unable to sync register 0x2b8000. -5
Jun 17 22:54:35 pop-os kernel: azx_single_wait_for_response: 362 callbacks suppressed
Jun 17 22:54:35 pop-os kernel: snd_hda_codec_realtek hdaudioC0D0: Unable to sync register 0x2b8000. -5
Jun 17 22:54:35 pop-os kernel: snd_hda_codec_realtek hdaudioC0D0: Unable to sync register 0x2b8000. -5
and then this when I did the journal thing for the past hour. Just copied the part that was red.
Jun 17 22:54:35 pop-os kernel: azx_single_wait_for_response: 362 callbacks suppressed
Jun 17 22:54:35 pop-os kernel: snd_hda_codec_realtek hdaudioC0D0: Unable to sync register 0x2b8000. -5
Jun 17 22:54:35 pop-os kernel: snd_hda_codec_realtek hdaudioC0D0: Unable to sync register 0x2b8000. -5
Jun 17 22:54:35 pop-os gsd-media-keys[3235]: Unable to get default source
Jun 17 22:55:20 pop-os gsd-media-keys[3235]: Unable to get default source
Then the issue is in the kernel and it may be fixed in a future kernel update. It might be caused by a power state. You can add
intel_idle.max_cstate=1to your kernel options by runningsudo kernelstub -a intel_idle.max_cstate=1to limit the max cstate, at the cost of higher energy consumption.haven’t tried that, leaving that open in the terminal now and waiting for it to happen again.