This is in reference to:
http://marc.theaimsgroup.com/?l=gentoo-user&m=111525434728903&w=2
Summary of problem: Audio in KDE didn't work when switching from 2.6.9
kernel to 2.6.11 kernel.
Resolution/workaround:
1. Open KMix mixer window
2. Select "Switches" tab
3. Turn off both "Headphone Jack Sense" and "Line Jack Sense" (that is, the
radio-button-like circles should be dark).
Steps to recreate problem:
1. Start with a working system with KDE 3.3.2, with working audio and alsa,
and with Linux kernel 2.6.9.
2. Compile new 2.6.11 kernel (using 'make oldconfig' or something
equivalent).
3. Reboot kernel to single-user or level 3. (Make sure KDE doesn't start.)
4. Test ALSA by using /usr/bin/aplay on a wav file or something. You should
hear it fine.
5. Go to level 3 (# init 3) and start up KDE.
6. You will likely hear your "KDE is starting" sound, but it will be
interrupted midway.
7. Use any audio player (aplay, artsplay, etc.), and you will get no
sound... but it will appear as if it's really playing.
Use steps above to correct.
Notes:
1. This appears to be specific to KDE. Apparently when KMix restores Mixer
settings, it's chosing poor defaults based on the changes to ALSA that have
apparently taken place between 2.6.9 and 2.6.11.
2. If there's not already a bug report on bugs.kde.org, I plan to post one.
3. I was able to recreate the bug in KDE HEAD.
4. This may be hardware specific. Mine is an IBM Thinkpad R51 with
82801DB/DBL/DBM (ICH4/ICH4-L/ICH4-M) AC'97 Audio Controller (rev 01).
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