On 14/06/12 22:27, Alan Chandler wrote:
I upgraded my sid system with the latest set of packages.
I have now lost by sound, but I am not sure why.
When I run alsamixer as root I see a device that appears to be the
sound chip on my motherboard, and using aplay to send a .wav file works.
If I run as me - a user, alsamixer shows a "pulseaudio" card as the
only card. Playing the wave file does nothing.
I presume I have a pulseaudio problem, but I don't know what to do
about it.
If I look at the sound settings in the Gnome System Settings, it says
be sound output is a "dummy card". I don't know whether that just
implies its going via pulse-audio, or that pulse audio has not found
a real device and is using a dummy one.
NOTE: the same upgrade seemed to screw up udevd - I get an error
message about failing to queue file, and I have to unplug and replug
my usb mouse and keyboard to make them work.
I got my sound back - at least temporarily.
There appeared to be two copies of the udevd daemon running. I killed
all copies of it and then restarted it once. Then I restarted
pulseaudio and now I have sound.
So my instinct that the problem with udev is the root cause seems
correct. However I have yet to find out what is the problem with that.