Same issue here - Running trusty on a Dell with hybrid Intel i915 + AMD HD 8790M. X is using the i915 and everything seems to run fine, glbench2 works fine, except that everything that does overlays (shadows, window decoration, hover tips) appears as completely black.
It is related to compiz somehow, because when I kill compiz and run metacity instead, the hover tips appear normally (at least I think so, they are white text on a black borderless rectangle).
I tried resetting the compiz settings but that didn't make any difference.
X.Org X Server 1.14.5 - Release Date: 2013-12-12
Compiz 0.9.10.2
Same issue here - Running trusty on a Dell with hybrid Intel i915 + AMD HD 8790M. X is using the i915 and everything seems to run fine, glbench2 works fine, except that everything that does overlays (shadows, window decoration, hover tips) appears as completely black.
It is related to compiz somehow, because when I kill compiz and run metacity instead, the hover tips appear normally (at least I think so, they are white text on a black borderless rectangle).
I tried resetting the compiz settings but that didn't make any difference.
X.Org X Server 1.14.5 - Release Date: 2013-12-12
Compiz 0.9.10.2
Troubleshooting tips welcome.