Red Hat Bugzilla – Bug 74461
(SOUND CMPCI)Asus A7M266-D onboard C-Media 8738 sound problem
Last modified: 2008-08-01 12:22:52 EDT
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Description of problem:
The onboard C-Media 8738 on the Asus A7M266-D (AMD-760MPX) motherboard is
identified correctly, however volume control of the CD-ROM, Line-In, Aux-In does
not work. No sound is heard through these devices. Also, no option for
surround sound (4 speaker) is available even though the driver seems to have the
option. The sound works OK on the same system with Windows XP Pro.
Version-Release number of selected component (if applicable):
Steps to Reproduce:
1.Install Null Beta 7.3.94
2.Detect the sound card (Test sound plays OK)
3.Play an audio CD and try to adjust the sound level
Actual Results: No sound is heard from the audio CD at any volume level even
though it is playing.
Expected Results: Should hear and be able to adjust volume level.
C-Media has the Linux drivers for the C-Media sound chips on their website:
This appears to be a newer driver than the one included with Red Hat Null, I'm
not sure if this one will work better or not.
I'm going to reassign this to the kernel since it seems to be a driver problem.
The card is in the hwdata database and the module seems to be loaded but just
not doing the right thing.
This sounds like a system with the analogue audio cable between the cd /
mainboard not fitted
Windows XP uses digital audio ripping so wouldnt need it.
I can assure you that the analog cable is fitted and working. The CD-Audio
works both in digital and analog mode under XP. Infact the analog setting
actually sounds better (Go figure). It should also be noted that the line-in
and Aux-in don't work under RedHat 8.0, but do work under Windows. As this is
my test system, I'm going to try installing RH9 and if that doesn't work, I'll
install a generic kernel to test it.
Thanks. Let me know what you find out, and now I know its not a simple case of
cabling I'll dig deeper
Thanks for the bug report. However, Red Hat no longer maintains this version of
the product. Please upgrade to the latest version and open a new bug if the problem
The Fedora Legacy project (http://fedoralegacy.org/) maintains some older releases,
and if you believe this bug is interesting to them, please report the problem in
the bug tracker at: http://bugzilla.fedora.us/