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Bug 253777 - SPDIF output for AD1988b chipset doesn't work correctly with non-AC3 content
SPDIF output for AD1988b chipset doesn't work correctly with non-AC3 content
Product: Fedora
Classification: Fedora
Component: kernel (Show other bugs)
All Linux
low Severity low
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Assigned To: Kernel Maintainer List
Fedora Extras Quality Assurance
: Reopened
Depends On:
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Reported: 2007-08-21 16:55 EDT by Timo-Pekka Viljamaa
Modified: 2008-01-11 12:44 EST (History)
1 user (show)

See Also:
Fixed In Version: 2.6.23
Doc Type: Bug Fix
Doc Text:
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Clone Of:
Last Closed: 2008-01-11 12:44:41 EST
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RHEL 7.3 requirements from Atomic Host:
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Description Timo-Pekka Viljamaa 2007-08-21 16:55:14 EDT
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):

How reproducible:
A motherboard with AD1988b sound chipset is needed, for example Asus P5B-E

Steps to Reproduce:
1. aplay -D spdif some.wav
Actual results:
The wav file is played, but the sound has distortions. If the wav is played
through non-SPDIF connection everything is ok.

Expected results:
The wav file would be played similarly through both SPDIF and non-SPDIF
connection without any distorsions.

Additional info:
Comment 1 Chuck Ebbert 2007-09-07 09:30:21 EDT
kernel- is in the updates-testing repository with a fix for this bug.

Comment 2 Timo-Pekka Viljamaa 2007-11-20 12:51:33 EST
This bug re-occurred with kernel- 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- works ok.
Comment 3 Chuck Ebbert 2007-11-27 14:17:47 EST
Patch was dropped during update to 2.6.23. Re-added.
Comment 4 Christopher Brown 2008-01-11 12:44:41 EST

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
the bug.

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