4.0-rc3: sound broken in chromium but not in mpg123

4.0-rc3: sound broken in chromium but not in mpg123

[Pavel Machek]

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?

Thanks,
									Pavel
-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html

Re: 4.0-rc3: sound broken in chromium but not in mpg123

[Takashi Iwai]

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?

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.


Takashi

Re: 4.0-rc3: sound broken in chromium but not in mpg123

[Pavel Machek]

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.

> 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
:-(.

Audio seems to work ok on thinkpad x60 with very very similar config.

									Pavel

-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html

Re: 4.0-rc3: sound broken in chromium but not in mpg123

[Takashi Iwai]

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?

> > 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).


Takashi

Re: 4.0-rc3: sound broken in chromium but not in mpg123

[Pavel Machek]

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

Re: 4.0-rc3: sound broken in chromium but not in mpg123

[Takashi Iwai]

At Mon, 16 Mar 2015 13:37:19 +0100,
Pavel Machek wrote:
> 
> 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.

Hmm.  You might see a difference when comparing
/proc/asound/card*/pcm0p/sub0/* files between working and broken
cases (while playing something).

Other than that, I have no idea.  A bisection would be needed, I'm
afraid.


Takashi

Re: 4.0-rc3: sound broken in chromium but not in mpg123

[Pavel Machek]

Hi!

> > > 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.
> 
> Hmm.  You might see a difference when comparing
> /proc/asound/card*/pcm0p/sub0/* files between working and broken
> cases (while playing something).
> 
> Other than that, I have no idea.  A bisection would be needed, I'm
> afraid.

:-(.

To make it more fun, it now appeared on x60... it looks like it has
something to do with starting browser early after boot.

Restarting the browser seems to fix it.

Best regards,
									Pavel

-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html