[alsa-devel] CS4232 Playback bug on Tecra 500

Stanley Pinchak stanley.pinchak at gmail.com
Thu Jan 22 05:40:41 CET 2009

I have been running into the problem briefly mentioned at the wiki
entry http://alsa.opensrc.org/index.php/Toshiba_Tecra_500CDT.
Playback using the CS4232 driver in native or oss emulation mode fails
randomly.  Once the failure occurs, subsequent attempts to playback
stop shortly after opening the device and tickling the speakers
(perhaps the buffer gets filled once).  Under heavy network load, the
initial failure will occur rather soon, within 15 minutes or so of
playback.   When I am playing songs from the hard drive, the failure
takes a very long time, and when I use oss emulation and play from the
harddrive, I have been unable to replicate the bug.  The CPU does have
the F00F bug if that might make some difference.  I have attached a
backtrace resulting from the attempts to use aplay after the failure
has occurred.  I may be able to attempt to capture a backtrace at the
initial failure if this would be helpful.  There are no obvious error
messages in my logfiles or printed to the console when the bug occurs.
 Please let me know how I can assist in squashing this bug.  I
attempted to use the alsa-info script, but it appears that the
database where it uploads the results is broken at the moment.  I have
pastebinned the results at http://pastebin.ca/1315459


Stanley Pinchak
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