Bug#654799: Cranking sound coming out of speakers with the new 3.1 kernel
Hello !
The sound has been stable for the last days without noises,
after applying % amixer -c0 set "Auto-Mute Mode" "Disabled"
It seems this has solved it, until further notice.
You might want to keep the bug open for a while,
so I can check with all the kernels (it works with latest).
Kind regards,
Jan
On Tue, Feb 28, 2012 at 4:38 PM, Takashi Iwai <tiwai@suse.de> wrote:
> At Tue, 28 Feb 2012 16:16:48 +0100,
> Jan Prunk wrote:
>>
>> Hello !
>>
>> On Sat, Jan 14, 2012 at 12:04 AM, Jonathan Nieder <jrnieder@gmail.com> wrote:
>> > Hi again,
>> >
>> > Jan Prunk wrote:
>> >
>> >> I tried booting into 3.2.0-rc7-686-pae, but the crunching sound
>> >> is still present, I am able to play music file properly, and
>> >> crunching is in the background, and also while not processing
>> >> any sounds, the crunching appears out of the speakers.
>> >
>> > Ok, thanks for testing. Please send a summary of this regression to
>> > alsa-devel@alsa-project.org, cc-ing Takashi Iwai <tiwai@suse.de> and
>> > either me or this bug log so we can track it.
>> >
>> > Be sure to mention:
>> >
>> > - steps to reproduce, what you expect versus what actually happens,
>> > and how that indicates a bug
>>
>> The sound is ok in kernel version "3.0.0-1-686-pae" but on all newer
>> versions there are sparkling/farting noises coming out of the speaker.
>> The noise is not very loud, its barely noticeable, but its repetative
>> and doesn't go away. And I think it happens while typing on the
>> keyboard and a bit later, then it dissapears for a few seconds,
>> or by the time that I type again.
>>
>> > - which kernel versions you tried, and what happens with each
>> I tried running alsa-info.sh as a "user".
>>
>> I tried 3.0.0-1-686-pae here is the debug:
>> http://www.alsa-project.org/db/?f=c1149b6466b2068d79c7517a8b0808d8b5c26e6b
>> ---
>> Linux vaio 3.2.0-1-686-pae #1 SMP Fri Feb 17 06:27:21 UTC 2012 i686 GNU/Linux
>> ii linux-image-3.2.0-1-686-pae 3.2.6-1
>> http://www.alsa-project.org/db/?f=fddbfbdc4fc44555a6dc851ecdc70760da6dd840
>> ---
>> Linux vaio 3.2.0-rc7-686-pae #1 SMP Wed Dec 28 21:26:25 UTC 2011 i686 GNU/Linux
>> ii linux-image-3.2.0-rc7-686-pae 3.2~rc7-1~experimental.1
>> http://www.alsa-project.org/db/?f=78c8919e87dd03294484f83b5f7ae44331b5edfe
>> Being booted into this version for 15 minutes, it seems to not make any noises,
>> but I will resubmit the info later if the noises will start to appear.
>
> 3.2.0-rc7 alsa-info shows that the headphone jack is plugged, thus the
> speaker is muted. It's natural that the noise goes away in this
> state.
>
> Apart from that, I see no obvious problem in 3.2.0 output.
>
> Does the problem still happen when you disable "Auto-Mute Mode" mixer
> enum?
> % amixer -c0 set "Auto-Mute Mode" "Disabled"
>
> Also, try to pass algin_buffer_size=0 option to snd-hda-intel.
> I don't expect much that this will influence, but at least, it's a
> difference between 3.0 and 3.2.
>
>
> Takashi
>
>
>> > - alsa-info.sh output, as an attachment
>> >
>> > - if you can make a recording of the strange sound available
>> > somewhere online, that would be ideal
>>
>> Because the noise is barely heard, I would need to find a good mic.
>> to be able to record it, but I could do that in the next bug submission.
>>
>> > - whether you are able to bisect or test patches if needed
>>
>> I might try that, if there are any manuals around how to do it,
>> but my response might take some time.
>>
>> > [1] may have more hints.
>> >
>> > Thanks and good luck,
>> > Jonathan
>> >
>> > [1] http://alsa-project.org/main/index.php/Help_To_Debug_Intel_HDA
>>
>> Kind regards,
>> Jan Prunk
>> --
>> Jan Prunk http://www.prunk.si
>> 0x00E80E86 http://pgp.prunk.si
>> http://AS50763.peeringdb.com
>>
--
Jan Prunk http://www.prunk.si
0x00E80E86 http://pgp.prunk.si
http://AS50763.peeringdb.com
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