On Mon, May 15, 2023 at 06:56:22PM -0500, Pierre-Louis Bossart wrote: > > > > >>> I have a rather interesting issue on HP EliteBook 1040, with Intel ADL > >>> HDA. Sometimes (often) audio output is heavily distorted, but then > >>> opening pavucontrol or just launching `parecord /dev/null` fixes the issue > >>> instantly. But, when the mixer or recording is closed, then few seconds > >>> later issue comes back. > >>> > >>> You can hear this at https://cloud.marmarek.net/s/46prqZnwrqDkBdD > >>> Initially recording was running, then about 10s stopped and you can > >>> hear the issue few seconds later. Then I starter recording again, and > >>> the issue is gone. > >>> This is how it should sound: https://youtube.com/watch?v=4Tr0otuiQuU > >>> I do not see any kernel messages when issue happens. > >>> > >>> The issue happens on Linux 6.1.26, 6.2.10, and 6.3.2. I haven't tested > >>> other versions. It happens only when running under Xen (in PV dom0). The > >>> very same Linux started directly works fine. Full dmesg of both native > >>> and Xen boots is at https://gist.github.com/marmarek/548ee79282446344a172109bcd943930 > >>> > >>> When running Linux 6.3.2 there, I noticed that just after boot first > >>> playback is okay, but if I start and stop recording it breaks. And then > >>> after some time of idle it fixes itself again. I have not observed this > >>> behavior on 6.2.10 (it was broken initially too), but I could be also > >>> doing some things differently. > >>> > >>> I have few other ADL-based systems (but not HP), and they do not show > >>> this issue, only this HP laptop is affected. Example dmesg from another > >>> ADL-based system: > >>> https://gist.github.com/marmarek/38c5ba3ec58f9300fbc1842ddc9fa4f5 > > >> > >> Could you try to switch to the legacy HD-audio driver (e.g. by passing > >> snd_intel_dspcfg.dsp_driver=1 option) and check whether the issue > >> persists or not? This will narrow down whether it's SOF-specific > >> problem or not, at least. > > > > This does help! With snd_intel_dspcfg.dsp_driver=1 the issue doesn't > > happen anymore, the audio output just works the whole time. But, the > > built-in microphone disappeared, only external (unplugged) is listed. I > > guess that's kind-of expected. > > Can you check what happens with a headphone and the SOF driver? > > The SOF driver doesn't really know/care what is on the other side of the > HDaudio bus, so it'd be good to rule-out an amplifier-specific > configuration issue. The same happens with headphones. -- Best Regards, Marek Marczykowski-Górecki Invisible Things Lab
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