I fixed it... but now I am not 100% what fixed it, as I did 2 things at
once.
First I ran this:
sudo apt-get install pavucontrol linux-sound-base alsa-base alsa-utils
libasound2; sudo apt-get -y --reinstall install linux-sound-base alsa-
base alsa-utils libasound2; killall pulseaudio; rm -r ~/.pulse*; sudo
usermod -aG `cat /etc/group | grep -e '^pulse:' -e '^audio:' -e '^pulse-
access:' -e '^pulse-rt:' -e '^video:' | awk -F: '{print $1}' | tr '\n'
',' | sed 's:,$::g'` `whoami`
Then I turned off the PC, removed the soundblaster PCI card, and re-
inserted it in the other PCI slot right under the graphics card.
While Ubuntu was booting up, I heard a static knocking noise, and then
the drumbeat played at the login screen. Also, the soundblaster card is
recognized again. Sound plays in both, onboard ALC892 and the
soundblaster.
I am not sure, if this had anything to do with the sounblaster PCI card,
as it was "gone" before while the onboard sound was working, so my guess
is that re-installing the sound related stuff after installing the 3.8
kernel fixed the problem.
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https://bugs.launchpad.net/bugs/1280739
Title:
Realtek 892 - desktop applications have no sound, but can hear mic
when activating it via alsamixer
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