Public bug reported:
I noticed several days ago that my sound suddenly quick working out of
my speakers. My headphone jacks work just fine. In a backwards
troubleshooting binge I tore apart my laptop (an HP Pavilion dv7-2273cl)
to ensure the speaker connection was still secure. I attempted to
install the previous versions of both ALSA and PulseAudio, both of which
failed. I used the ubunu-audio-dev/alsa-daily PPA. Finally I got
frustrated enough to boot into Windows and the sound worked just fine.
Finally, after getting annoyed enough to try troubleshooting again, I
found the problem to be the 3.2.0-25 kernel. When booting from 3.2.0-24
(and rebuilding my proprietary ATI graphics driver) my sound works just
fine.
I've been running Linux almost exclusively since 2007 and I've never had
a problem like this before with any kernel unless it was a self-made or
unstable/testing version - a problem where something just quits working
after an update just has never happened.
Machine: HP Pavilion dv7-2273cl (Laptop)
Ubuntu version: 12.04 Precise Pangolin (with Gnome Shell)
`lspci` output is attached.
** Affects: linux-meta (Ubuntu)
Importance: Undecided
Status: New
** Tags: 3.2.0-25 ich9 sound
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https://bugs.launchpad.net/bugs/1017334
Title:
Kernel 3.2.0-25 Breaks Sound
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