[gentoo-user] BUG : kernel 4.5.1 and ALSA

[gentoo-user] BUG : kernel 4.5.1 and ALSA

[Yuri K. Shatroff]

Hi gentoo-users,

A few days ago I updated linux kernel to 4.5.1. Yesterday I got a disk 
space overflow in my /home partition. Cleaned it up and rebooted, just 
to run into the same issue today morning. Investigations revealed that 
the `.xsessions-errors` had grown to tremendous 100G full of messages like:

	AL lib: (EE) ALCplaybackAlsa_mixerProc: start failed: File descriptor 
in a bad state

It is - *50G per DAY!*

Thinking about a possible cause and bearing in mind I've not updated 
ALSA recently rather than the kernel, I went to the kernel's changelog 
and found that version 4.5.2 fixes several ALSA-related bugs. I upgraded 
immediately and got rid of the error.

So I advise everyone not to install the 4.5.1 kernel and suggest 
removing it from portage ASAP. If anyone knows how I could submit such a 
request, I'm all ears.

Thanks for your attention!

-- 
Regards,
Yuri K. Shatroff

Re: [gentoo-user] BUG : kernel 4.5.1 and ALSA

[Alexander Kapshuk]

On Thu, Apr 21, 2016 at 10:59 AM, Yuri K. Shatroff <yks-uno@yandex.ru> wrote:
> Hi gentoo-users,
>
> A few days ago I updated linux kernel to 4.5.1. Yesterday I got a disk space
> overflow in my /home partition. Cleaned it up and rebooted, just to run into
> the same issue today morning. Investigations revealed that the
> `.xsessions-errors` had grown to tremendous 100G full of messages like:
>
>         AL lib: (EE) ALCplaybackAlsa_mixerProc: start failed: File
> descriptor in a bad state
>
> It is - *50G per DAY!*
>
> Thinking about a possible cause and bearing in mind I've not updated ALSA
> recently rather than the kernel, I went to the kernel's changelog and found
> that version 4.5.2 fixes several ALSA-related bugs. I upgraded immediately
> and got rid of the error.
>
> So I advise everyone not to install the 4.5.1 kernel and suggest removing it
> from portage ASAP. If anyone knows how I could submit such a request, I'm
> all ears.
>
> Thanks for your attention!
>
> --
> Regards,
> Yuri K. Shatroff
>

That's interesting. That was certainly not my experience running vanilla 4.5.1.
Although I compiled the kernel sources I had previously downloaded
from the kernel.org's git repository.
How did you obtain your kernel sources?

Re: [gentoo-user] BUG : kernel 4.5.1 and ALSA

[Yuri K. Shatroff]

21.04.2016 11:28, Alexander Kapshuk wrote:
> On Thu, Apr 21, 2016 at 10:59 AM, Yuri K. Shatroff <yks-uno@yandex.ru> wrote:
>> Hi gentoo-users,
>>
>> A few days ago I updated linux kernel to 4.5.1. Yesterday I got a disk space
>> overflow in my /home partition. Cleaned it up and rebooted, just to run into
>> the same issue today morning. Investigations revealed that the
>> `.xsessions-errors` had grown to tremendous 100G full of messages like:
>>
>>          AL lib: (EE) ALCplaybackAlsa_mixerProc: start failed: File
>> descriptor in a bad state
>>
>> It is - *50G per DAY!*
>>
>> Thinking about a possible cause and bearing in mind I've not updated ALSA
>> recently rather than the kernel, I went to the kernel's changelog and found
>> that version 4.5.2 fixes several ALSA-related bugs. I upgraded immediately
>> and got rid of the error.
>>
>> So I advise everyone not to install the 4.5.1 kernel and suggest removing it
>> from portage ASAP. If anyone knows how I could submit such a request, I'm
>> all ears.
>>
>> Thanks for your attention!
>>
>> --
>> Regards,
>> Yuri K. Shatroff
>>
>
> That's interesting. That was certainly not my experience running vanilla 4.5.1.
> Although I compiled the kernel sources I had previously downloaded
> from the kernel.org's git repository.
> How did you obtain your kernel sources?

I emerged gentoo-sources==4.5.1.

I believe this is the related commit:
	
	ALSA: hda - Fix regression of monitor_present flag in eld proc file

This can be wrong, but anyway, I listed some facts supporting the 
hypothesis of a problem in the 4.5.1 version.

-- 
Regards,
Yuri K. Shatroff