MCP51 AC97 on-board sound worked when I installed Ubuntu, then stopped!

[john.ennew]

I am having the same problems, my sound card stopped working this
morning and I am pretty sure I did not do anything to the setup
yesturday (...)



Double clicking the sound icon in the system tray I get "No Volume
control GStreamer plugins and/or devices found."



When I run the commands aplay -l I get:

aplay: device_list:221: no soundcards found...



When I run lspci -v I get:

...

0000:00:1f.5 Multimedia audio controller: Intel Corporation
82801DB/DBL/DBM (ICH4/ICH4-L/ICH4-M) AC'97 Audio Controller (rev 03)

Subsystem: ASUSTeK Computer Inc.: Unknown device 1713

Flags: bus master, medium devsel, latency 0, IRQ 4

I/O ports at ee00 [size=256]

I/O ports at e000 [size=64]

Memory at ffaff800 (32-bit, non-prefetchable) [size=512]

Memory at ffaff400 (32-bit, non-prefetchable) [size=256]

Capabilities: <available only to root>

...



and the commands above do not work:

sudo modprobe -v -r snd_intel8x0

sudo modprobe -v snd_intel8x0



A popup appears after running them saying a new soundcard has been
detected and I should set it as default, but when I go to
System->Preferences, the default sound card box has no options in it
and running aplay -l still reports no sound device.  I have tried
restarting as well after running the modprobe commands and running
gst-register-0.8 as suggested on other sites, but nothing works, I
still have no sound.  I also tried the KDE and Xfce desktops at the
login prompt but these do not have sound either.



Any help would be greatly appriciated :)



(nb. I still get sound in Windows so the card and speakers do work).


-- 
john.ennew