Comment 6 for bug 298584

envy qt did work. Thanks.

xorg.conf is very simple:

----
Section "Screen"
 Identifier "Default Screen"
 DefaultDepth 24
EndSection

Section "Module"
 Load "glx"
 Disable "dri2"
EndSection

Section "Device"
 Identifier "Default Device"
 Driver "nvidia"
EndSection
-----

Ironically enough, Jockey now says the driver is activated, though it seems a bit confused and has expanded to several times its normal width...

Compiz is still unusable because of the black window bug, of course. :)

Now I have to figure out how to enable gsynaptics again so I can turn off touchpad tapping.

Pretty soon I'll be back to the performance I had before I "upgraded" three weeks ago!