No sound on Fedora 21

[Frank McCormick]

I am running Fedora 21 and after the latest updates I have no sound
on my machine.

aplay -l shows no sound cards. Mixers such as alsamixer show only Pulseaudio
master and the output is full.

Can someone suggest how to debug this ?

Thanks

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Re: No sound on Fedora 21

[Frank McCormick]

On 11/10/2015 01:36 PM, Emmett Culley wrote:

On 11/10/2015 07:32 AM, Frank McCormick wrote:

I am running Fedora 21 and after the latest updates I have no sound
on my machine.

aplay -l shows no sound cards. Mixers such as alsamixer show only Pulseaudio
master and the output is full.

Can someone suggest how to debug this ?

Thanks


This happened to me as well.  Then I noticed that I was booting to a old Fedora 
22 kernel (4.0.1-100.  Upon investigation I found some strange entries in 
grub.conf.  Strange in that there were references to the Fedroa 22 kernel.

Removing those reference didn't help.  Neither did selecting an older (F21) 
kernel from the list help, as the system would not boot at all.  I was left 
with a dracut prompt.

I lost sound, and all USB support.  Plus my network failed to start as it 
appeared that bridge support was missing.

Finally I installed grub again on /dev/sda and now I am booting to 
4.1.10-100-f21 as expected and everything works again.

Emmett


   That's almost identical to what happened to me...except I only lost 
sound and it only happened after
I installed grub from my Debian Sid partition. Once I re-installed it 
from Fedora, the sound problem disappeared.
But then I had no entry in the menu for Windows. So I re-ran 
grub2-mkconfig and Windows re-appeared!!


I'd file a bug except I don't know whether it's a Debian problem or a 
Fedora problem. There must be some
incompatibility between grub in both systems. I guess I'll just leave 
grub installed from Fedora.


I wish there were a better way to handle two partitions of different 
Linux's.



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Re: No sound on Fedora 21

[Emmett Culley]

On 11/10/2015 07:32 AM, Frank McCormick wrote:
> I am running Fedora 21 and after the latest updates I have no sound
> on my machine.
> 
> aplay -l shows no sound cards. Mixers such as alsamixer show only Pulseaudio
> master and the output is full.
> 
> Can someone suggest how to debug this ?
> 
> Thanks
> 
This happened to me as well.  Then I noticed that I was booting to a old Fedora 
22 kernel (4.0.1-100.  Upon investigation I found some strange entries in 
grub.conf.  Strange in that there were references to the Fedroa 22 kernel.

Removing those reference didn't help.  Neither did selecting an older (F21) 
kernel from the list help, as the system would not boot at all.  I was left 
with a dracut prompt.

I lost sound, and all USB support.  Plus my network failed to start as it 
appeared that bridge support was missing.

Finally I installed grub again on /dev/sda and now I am booting to 
4.1.10-100-f21 as expected and everything works again.

Emmett
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No sound on Fedora 21 solved

[Frank McCormick]

I figured out what was wrong. After the recent updates I changed the
grub installation to grub on my Debian partition. Everything
seemed to go well until todays sound problems. lsmod showed
there were NO sound modules loaded and uname -a showed a strange
kernel version.

I reinstalled grub from Fedora. Sound is back, lsmod shows
all the needed sound modules loaded.

Now there is another minor problem. With this version of
grub running, grub.cfg does not show my Windows 7 installation...just 
Fedora and Debian.



Help ?


Thanks






















I am running Fedora 21 and after the latest updates I have no sound
on my machine.

aplay -l shows no sound cards. Mixers such as alsamixer show only Pulseaudio
master and the output is full.

Can someone suggest how to debug this ?

Thanks

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Re: No sound on Fedora 21 solved

[stan]

On Tue, 10 Nov 2015 12:43:13 -0500
Frank McCormick  wrote:

> I reinstalled grub from Fedora. Sound is back, lsmod shows
> all the needed sound modules loaded.
> 
> Now there is another minor problem. With this version of
> grub running, grub.cfg does not show my Windows 7 installation...just 
> Fedora and Debian.
> 
> 
> Help ?

If you are booting from BIOS (not EFI), go into the directory 
/boot/grub2, and run grub2-mkconfig -o grub.cfg, that should
create a grub.cfg that has all recognizable OS partitions on your
system.

If you are running EFI, someone else will have to help as my knowledge
of that is almost nothing.
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