“With the OpenGL settings activated a rainbow splash screen appeared. The cause of the problem is a voltage drop with the standard usb power supply and sometimes thin cables.
Now I have changed to the original and the voltage drop problem is gone.”
“Using for PI's driving USB DVB2-S cards for a mythbackend - no issues at all, although this won't load the CPU's heavily. So far have never had any issues with the official ones, but have with nearly every other brand.”