(In reply to Takashi Iwai from comment #219) > Is this with tsched=0? I wonder why PA gets the position information so > often. Without tsched change, PA should access to the hardware much less > frequently. > > In anyway, one another interesting experiment is to reduce the max period > size, something like below on top of the previous patch: > > --- a/sound/pci/hda/hda_controller.c > +++ b/sound/pci/hda/hda_controller.c > @@ -607,6 +607,7 @@ static int azx_pcm_open(struct snd_pcm_substream > *substream) > runtime->hw.channels_max = hinfo->channels_max; > runtime->hw.formats = hinfo->formats; > runtime->hw.rates = hinfo->rates; > + runtime->hw.period_bytes_max = 32768; // XXX > snd_pcm_limit_hw_rates(runtime); > snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS); > > This is merely a hackish workaround, but worth to try.
No, this is with tsched removed from the parameter, so it should be one. I’m forcing tsched to zero to not have the issue in PA, otherwise the issue is not present. If you like, I can post the same trace with tsched=0, if that will help you narrow down the issue. I’ll try the patch shortly, Thanks again for your time, Marco. -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to pulseaudio in Ubuntu. https://bugs.launchpad.net/bugs/1801540 Title: Microphone distorted sound on ALC892/1220 on AMD chipsets Status in Linux: Confirmed Status in linux package in Ubuntu: Won't Fix Status in pulseaudio package in Ubuntu: Won't Fix Bug description: Not sure if I'll report this upstream but there is definitely an issue with microphone recording on my desktop, this is not happening on my laptop which has a different codec. Already tried all workarounds possible, no luck. Only with my desktop with this particular motherboard. No issues in Windows, the sound recorded in there is distorted and has some static and robotic tone on high-pitch. alsa-info on the attachments To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/1801540/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
