Comment 12 for bug 987153

For the problem I am having, I don't have any issue if my monitors do not go to sleep i.e. I turn off the KDE option to turn off the monitors when the system is idle (I think KDE is turning off DPMS in the background).

I also do not have any issue if I turn off KDE desktop effects before the monitors go to sleep, so it appears to be something related to Xorg being in a mode that uses the 3D part of the video driver i.e. OpenGL etc.

One last point -- I think you are right about the root cause being the video card going into power save mode, since if the monitors go to sleep but I wake them up within a few seconds, there is no issue. It is only if I wake them up after some time that the EQ overflows.

Does anyone know how to configure the ATI driver to not put the video card in powersave mode, even if the monitors are off?