Volume controls disappear

[jp]

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Hi,
I've just done an update and upgrade. Last one was done about a week
ago. I manually installed some packages that where "kept back", I think
it was gnome-panel and friends.

Now the audio is not working.
My laptop has a YMF-744B audio controller from lspci.

When I log in I get an error message :
No volume control elements and/or devices found.

This is presumably from a volume control gnome applet.

When I try to play using music player I get the error:
Could not open resource for writing

apt-get dist-upgrade returns no packages required.

Anyone else experiencing this?

Is there anything I can do to roll back upgrades?

JP
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