On Sun 2015-03-15 09:23:15, Takashi Iwai wrote: > At Sun, 15 Mar 2015 09:15:44 +0100, > Pavel Machek wrote: > > > > On Sun 2015-03-15 09:12:47, Takashi Iwai wrote: > > > At Sat, 14 Mar 2015 21:11:09 +0100, > > > Pavel Machek wrote: > > > > > > > > Hi! > > > > > > > > Intel desktop machine: > > > > > > > > 00:1b.0 Audio device: Intel Corporation NM10/ICH7 Family High > > > > Definition Audio Controller (rev 01) > > > > > > > > Sound worked ok in both in previous kernel versions. > > > > > > > > Any ideas? > > > > > > How broken? Did you get any error messages? > > > > I get some funny, faint, rhytmic noises where audio should > > be... Actually, I somehow suspect something is wrong with time during > > video playback. > > Did you try audio playback without video on chromium?
Yes. Does not work, either; I tried http://www.thenakedscientists.com/HTML/podcasts/ . > > > If the behavior depends on the application (e.g. ALSA vs OSS), I'd > > > suspect rather a device permission problem at first. There are no > > > significant changes between 3.19 and 4.0-rc3 regarding HD-audio. > > > > My system contains pulseaudio, so it is more complex than ALSA vs OSS > > :-(. > > OK, that was missing information :) > Then there should be any difference in the kernel driver side -- it's > only a single PA process who accesses the sound device in the very > same manner no matter what clients are used (after all it's the > purpose of PA). > > Audio seems to work ok on thinkpad x60 with very very similar config. > > OK, then another thing I would check is to try different sample rates > (e.g. via playing WAV files over PA). Like this? pavel@amd:/usr/share$ pacat ./sounds/alsa/Front_Right.wav pavel@amd:/usr/share$ pacat --rate=48000 ./sounds/alsa/Front_Right.wav pavel@amd:/usr/share$ pacat --rate=44100 ./sounds/alsa/Front_Right.wav pavel@amd:/usr/share$ pacat --rate=32000 ./sounds/alsa/Front_Right.wav pavel@amd:/usr/share$ pacat --rate=16000 ./sounds/alsa/Front_Right.wav pavel@amd:/usr/share$ pacat --rate=8000 ./sounds/alsa/Front_Right.wav This seems to have behaved as expected. Thanks, Pavel -- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
