[Bug 68123] Re: Lock Screen not working anymore

[Nico Laum]

But did you tried Option "OpenGLOverlay" "off"? I think that's the
point...

Currently the fglrx driver doesn't support Xv for xorg 7.1 but that is
another problem.

Did you search the forum for your acceleration issue? Perhaps you you
missed the "Composite" "disable" entry you have to add to your
xorg.conf?!

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Lock Screen not working anymore
https://launchpad.net/bugs/68123