nvidia

Things to check:
That you have BusID in your Device section - syntax example BusID "PCI:1:0:0" (you can discover it for example using nvidia-xconfig --query-gpu-info or pciconf -lv). If you have problem with finding modes for monitor you can add Option "ModeDebug" "True" to your Device section in xorg.conf.

For setting up X server follow instructions here. (Long story short, use nvidia driver, add glx and extmod extensions to xorg.conf, and add argb-glx-visuals to monitor.)

After you update your OS and you forgot about this little quirk

edit /usr/local/bin/compiz-manager and change line saying
INDIRECT="no"
to
INDIRECT="yes"

UPDATE (2014-11-15):
Apparently this also depends on nvidia driver, so I am trying to keep the list of those I know work correctly, and those I know don't work correctly.

Working: 331.67, 331.113
Not working: 340.46, 343.22 (works most of the time, but sometimes get crazy), 346.22 similar to 343.22