I have an idea what might be going on, but I need you to try something
for me.
Open the file /lib/udev/rules.d/90-pulseaudio.rules as root in an
editor, and remove the following line:
ATTRS{vendor}=="0x10de", ENV{PULSE_PROFILE_SET}="nvidia.conf"
Save changes, then log out or reboot. If this clears up detection of
your hardware, then it seems that a fix that was added for other users
who have an NVIDIA hda device needs to be made somewhat more fine
graned. The NVIDIA code we have there was for users who had NVIDIA
devices with realtek codecs. It seems my colleague who made that fix was
unaware of NVIDIA devices with Conexant codecs.
If removing the above line does help, then we will set about fixing
things such that your system is excluded from loading that configuratino
file.
Thanks.
** Package changed: alsa-driver (Ubuntu) => pulseaudio (Ubuntu)
** Changed in: pulseaudio (Ubuntu)
Status: New => Incomplete
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https://bugs.launchpad.net/bugs/779983
Title:
[Natty] Unreliable detection of snd-hda-intel with Conexant CX20549
codec
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