Hi
Yes ATI graphics cards are a problem with many computers. Stellarium uses some very good features of openGL for shading etc. that are not supported by ATI cards.
The code is slowly being modified with special detectors for ATI cards that give work arounds for some of the problems but there is no universal solution. You can try some of these entries to the config.ini file
add to [main] use_glshaders = false
also try use_qpaintenginegl2 = true/false
You may need to get the beta copy of 0.10.5 to implement these.
Barry
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