Comment 52 for bug 400682

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Jamie Strandboge (jdstrand) wrote : Re: [Karmic stac927x regression] No sound after upgrade from Jaunty to Karmic

$ cat /proc/version_signature
Ubuntu 2.6.31-6.26~~ubuntuaudiodev1-generic

$ cat /etc/modprobe.d/hda-model-test.conf
options snd-hda-intel enable_msi=1

On a cold boot with pulseaudio set to not autospawn, logging in to tty1, with the speakers plugged into the back of the computer (ie 'not' headphones) and doing speaker-test -c2 -Dplughw:0 I heard white noise alternating between the left and right speakers. The test called it 'pink noise' but what I heard sounded like the ocean (without the undulations).

On a cold boot with pulseaudio set to not autospawn, logging in to tty1, with the speakers plugged into the front of the computer (ie 'with' headphones) and doing speaker-test -c2 -Dplughw:0 I heard nothing, even though the test said it was alternating between speakers.

Attached is the output of /proc/asound/card*/codec* from both of those runs.