Red Hat Bugzilla – Bug 180037
kernel-smp-2.6.15-1.1830_FC4 breaks alsa
Last modified: 2015-01-04 17:25:04 EST
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User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.7.12) Gecko/20060202 Fedora/1.0.7-1.2.fc4 Firefox/1.0.7
Description of problem:
After upgrading to 2.6.15-1.1830, amixer, alsamixer or any other mixer program fails to start or work, printing the following to the conosle:
ALSA lib simple_none.c:1216:(simple_add1) helem (MIXER,'Front Playback Volume',0,0,0) appears twice or more
Downgrading to any older kernel release fixes the problem.
A quick look on google shows many others who are having the same problem with 2.6.15.
Version-Release number of selected component (if applicable):
Steps to Reproduce:
1. Install 2.6.15-1.1830 on a computer with a Sound Blaster Live (snd_emu10k1)
2. System boots up with all chanels muted
3. amixer, alsamixer, etc are all unable to unmute the mixer
I saw this problem too, the channels were mutted the first time I started with
the 2.6.15-1.1830 kernel, however I was able to unmute with the gnome volume
System is x86_64 (Opteron), my sound card is SoundBlaster Live! + Live! Drive panel.
The Gnome volume controller says that no volume control devices are present.
However I am able to unmute the volume with the volume control applet in gome
panel, but no sound can be heard. My sound card is a Creative Labs SB Live!
EMU10k1 (rev 0a).
I am running a non-smp kernel : kernel-2.6.15-1.1830_FC4
I can confirm that my gnome volume control also says that no volume control
devices are present. Reverting back to the last 2.6.14 kernel fixes the problem.
See alsa bug for a fix & more details
Can you try the 1832 kernel at http://people.redhat.com/davej/kernels/Fedora/FC4
1832 fixed the problem for me. The channels were all muted when I first booted
this kernel, but this time I was able to unmute them.
I've installed 1832, no channels seems to be muted but I still get no sound :-(
I had the exact same problem and installing the 1832 kernel at
http://people.redhat.com/davej/kernels/Fedora/FC4 and running the soundcard
detection once again after that did the trick!