Since this bug occurs across multiple distributions AND across multiple graphics hardware AND across multiple drivers, it is clearly a generic Xorg/kernel issue, so I have logged a bug with upstream (Xorg - freedesktop) team - URL is here:
Unfortunately, as it keeps on coming up (Google shows this bug has been around for over 2 years), I don't hold out any great hope that it will be fixed at any time, by anybody, despite it effectively preventing use of a MAJOR feature (ie standard 3D Desktop Effects).
Since this bug occurs across multiple distributions AND across multiple graphics hardware AND across multiple drivers, it is clearly a generic Xorg/kernel issue, so I have logged a bug with upstream (Xorg - freedesktop) team - URL is here:
https:/ /bugs.freedeskt op.org/ show_bug. cgi?id= 38029
Unfortunately, as it keeps on coming up (Google shows this bug has been around for over 2 years), I don't hold out any great hope that it will be fixed at any time, by anybody, despite it effectively preventing use of a MAJOR feature (ie standard 3D Desktop Effects).