[alsa-devel] 4.0-rc3: sound broken in chromium but not in mpg123
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
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
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
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
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
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
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
participants (2)
-
Pavel Machek -
Takashi Iwai