Bug 180037

Summary:	kernel-smp-2.6.15-1.1830_FC4 breaks alsa
Product:	[Fedora] Fedora	Reporter:	Phil Anderson <pza>
Component:	kernel	Assignee:	Dave Jones <davej>
Status:	CLOSED ERRATA	QA Contact:	Brian Brock <bbrock>
Severity:	medium	Docs Contact:
Priority:	medium
Version:	4	CC:	anders.truelsen, anvil, gauret, pfrields, thomas.canniot, wtogami
Target Milestone:	---
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2006-03-04 20:20:32 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:
Bug Blocks:	165164

Description Phil Anderson 2006-02-04 22:49:26 UTC

From Bugzilla Helper:
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):


How reproducible:
Always

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
  

Additional info:

Comment 1 stef 2006-02-04 22:59:01 UTC

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
controler.

System is x86_64 (Opteron), my sound card is SoundBlaster Live! + Live! Drive panel.

Comment 2 Thomas Canniot 2006-02-06 07:24:51 UTC

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

Comment 3 Phil Anderson 2006-02-06 08:58:11 UTC

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.

Comment 4 Phil Anderson 2006-02-10 11:36:39 UTC

See alsa bug for a fix & more details
https://bugtrack.alsa-project.org/alsa-bug/view.php?id=1799

Comment 5 Dave Jones 2006-02-19 05:04:30 UTC

Can you try the 1832 kernel at http://people.redhat.com/davej/kernels/Fedora/FC4

Comment 6 Phil Anderson 2006-02-19 11:29:41 UTC

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.

Comment 7 Anders Truelsen 2006-02-23 13:14:57 UTC

I've installed 1832, no channels seems to be muted but I still get no sound :-(
Any suggestions?

Comment 8 FX 2006-02-28 23:12:05 UTC

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!