Red Hat Bugzilla – Bug 253777
SPDIF output for AD1988b chipset doesn't work correctly with non-AC3 content
Last modified: 2008-01-11 12:44:41 EST
Description of problem:
SPDIF output for AD1988b chipset doesn't work correctly with non-AC3 content.
The sound is played, but it has distortions. There's already a patch in
alsa-kernel to fix this problem:
Version-Release number of selected component (if applicable):
A motherboard with AD1988b sound chipset is needed, for example Asus P5B-E
Steps to Reproduce:
1. aplay -D spdif some.wav
The wav file is played, but the sound has distortions. If the wav is played
through non-SPDIF connection everything is ok.
The wav file would be played similarly through both SPDIF and non-SPDIF
connection without any distorsions.
kernel-126.96.36.199-76.fc7 is in the updates-testing repository with a fix for this bug.
This bug re-occurred with kernel-188.8.131.52-21.fc7 using alsa-lib 1.0.14-3.fc7. I
also tried with alsa-lib 1.0.15-1.fc9, but it doesn't work either.
kernel-184.108.40.206-91.fc7 works ok.
Patch was dropped during update to 2.6.23. Re-added.
I'm reviewing this bug as part of the kernel bug triage project, an attempt to
isolate current bugs in the Fedora kernel.
Given that the patch was confirmed working before and has been re-added with no
additional comment from the reporter I am closing this CURRENTRELEASE. Please do
not hesitate to re-open if it is still an issue for you. Thank you for filing