[gentoo-user] Is sound broken?

[gentoo-user] Is sound broken?

[Peter Humphrey]

Hi list,

Today after I had my system down for its weekly backup, on restarting KDE 
(phonon) said some internal devices had been removed, in particular the 
default device. And indeed I had no sound. This was with kernel 3.10.7 driving 
the on-board Intel HDA audio. The kernel module snd_hda_intel had been loaded.

On rebooting the previous kernel, 3.8.13, sound worked OK but KDE said it had 
noticed some other devices missing - presumably some that had been found by 
kernel 3.10.7.

I've made the kernel configs the same as regards sound, but still I get sound 
from 3.8.13 but not from 3.10.7. The kernel change-log hasn't helped either.

Anyone have a clue to offer?

-- 
Regards,
Peter

Re: [gentoo-user] Is sound broken?

[Mick]

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On Sunday 25 Aug 2013 16:22:31 Peter Humphrey wrote:
> Hi list,
> 
> Today after I had my system down for its weekly backup, on restarting KDE
> (phonon) said some internal devices had been removed, in particular the
> default device. And indeed I had no sound. This was with kernel 3.10.7
> driving the on-board Intel HDA audio. The kernel module snd_hda_intel had
> been loaded.

I had the same on two systems.  Strangely it did not recognise my hw:0,0 and 
hw:1,3 rather than the default device.  I accepted what it suggested (to 
remove the two hw devices) and carried on.  When I rebooted later on sound 
worked fine for playback and capture.


> On rebooting the previous kernel, 3.8.13, sound worked OK but KDE said it
> had noticed some other devices missing - presumably some that had been
> found by kernel 3.10.7.
> 
> I've made the kernel configs the same as regards sound, but still I get
> sound from 3.8.13 but not from 3.10.7. The kernel change-log hasn't helped
> either.
> 
> Anyone have a clue to offer?

Try accepting what it suggests, then use alsactl to initialise your cards and 
see what you get.  You can also check with alsamixer that they are not muted.

-- 
Regards,
Mick

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FIXED: [gentoo-user] Is sound broken?

[Peter Humphrey]

On Monday 26 Aug 2013 11:51:52 Mick wrote:
> On Sunday 25 Aug 2013 16:22:31 Peter Humphrey wrote:
> > Hi list,
> > 
> > Today after I had my system down for its weekly backup, on restarting KDE
> > (phonon) said some internal devices had been removed, in particular the
> > default device. And indeed I had no sound. This was with kernel 3.10.7
> > driving the on-board Intel HDA audio. The kernel module snd_hda_intel had
> > been loaded.
> 
> I had the same on two systems.  Strangely it did not recognise my hw:0,0 and
> hw:1,3 rather than the default device.  I accepted what it suggested (to
> remove the two hw devices) and carried on.  When I rebooted later on sound
> worked fine for playback and capture.

I tried that, and I thought it hadn't worked because when I rebooted I still 
had no sound. But then, when I decided to reboot again with the old kernel to 
see if I'd now lost my working sound device, I heard the KDE shutdown bong. So 
I've rebooted the new kernel and all is well.

Meanwhile I had fiddled with alsactl, issuing various commands blindly. Maybe 
that's what fixed it.

Many thanks for your help Mick.

-- 
Regards,
Peter