Red Hat Bugzilla – Bug 145700
sound not working with ali5451 on fc3 with kernels 2.6.10
Last modified: 2015-01-04 17:15:57 EST
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User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1)
Description of problem:
sound card ali5451 is detected and mixers controls work but sound is
just not coming aout of speakers.
This happens on last two 2.6.10 released kernels updates but not with
previous 2.6.9 kernels.
pci=routeirq didnÂ´t help.
Version-Release number of selected component (if applicable):
Steps to Reproduce:
1.boot a 2.6.10 kernel instead of a 2.6.9
Actual Results: sound didnÂ´t work
Expected Results: sound should work
machine is a laptop medion md40888 www.medion.co.uk
sound is still broken in the latest testing kernel.
Looks like there is a way to fix sound on the kernels marked above
as "not working" as itÂ´s been reported on the net by someone.
The fix consists in muting "headphone jack sense" "line jack sense"
mixers setting via any mixer setting programs like "volume
control", "alsa mixer" and similar.
Theese setting were apparently introduced in 2.6.10 and are meant to
mute speakers when headphones or line-in jacks are plugged in.
I'm still not convinced that the actual behaviour is normal but IÂ´m
going to close this bug anyway becouse the sound IS working after
all. Someone that understand well how theese "jack sense" things are
supposed to behave will possibly report a new bug on the issue.