Created attachment 81091 [details] You can find my earlier comments here. Hi all, I have Acer Extensa 5620Z which sound system is based on HDA Intel bus. ALC268 codec is used. Eventually, sound begins to jam. It appears in both cases: with and without PulseAudio. The difference between these two cases is that sound jams in bare ALSA case and sound "hicks" (sound system repeats some particular pieces of audio stream) when PulseAudio is up. Moreover, I observe messages in console from audio clients. They sound like "alsa returned X frames instead of Y" (Google Chrome) or "alsa dropout" (Audacious). I'm going to attach lspci, lsusb, dmidecode and dmesg dumps. Feel free to ask to provide all information you need. Thank you in advance.
Created attachment 81101 [details] Also, I've found following thread at freedesktop.org. I'd like to draw your attention to mentioned thread, because it works in my case exactly as described there. I switched off all volume monitors in UI environment to fix it. When sound begins to "hick" or jam I change volume and problem disappears before next reboot.
Created attachment 81111 [details] dmidecode dump
Created attachment 81121 [details] lsusb dump
Created attachment 81131 [details] lspci dump
Created attachment 81141 [details] dmesg dump
Does the problem still happen with 3.12 kernel? The repeated sound implies that you have a problem about interrupts. PulseAudio doesn't suffer from it because it's controlling via timer without the interrupts from the sound device. Try to pass enable_msi=0 option to snd-hda-intel, if 3.12 still doesn't work. Also, don't forget to give alsa-info.sh output.
(In reply to Takashi Iwai from comment #6) > Does the problem still happen with 3.12 kernel? > > The repeated sound implies that you have a problem about interrupts. > PulseAudio doesn't suffer from it because it's controlling via timer without > the interrupts from the sound device. > > Try to pass enable_msi=0 option to snd-hda-intel, if 3.12 still doesn't work. > Also, don't forget to give alsa-info.sh output. Hello Takashi, Thank you for the tip. It will by my 3rd try I will be moving my friend to Linux. Will keep this thread updated with news.