many thanks for your quick reply. sorry, the post you quoted makes me confused. could you explain
- which file i have to hexedit
- what shall i locate and what edit in this file
sorry im a total noob in such things and i dont really understand what this guys are talking about.. what is the coherence between framebuffer, portmapping and the different aticonfigs? what does the ati5000 kext do?
what i did in the meanwhile:
updated the graphic bios (in win7) -> no difference
aticonfig zonalis gave me a result i can live with for the moment - it detects gpu as 5850 - so dvd-player and so on works - and it correctly detects the displays on 2 ports (DP and DVI_1) and simply ignores the third one (DVI_2)
(my kids can't live with - they can't look videos anymore while i'm working

)
maybe it helps:
ioReg | grep ATY
| | | | +-o ATY,Zonalis@0 <class AtiFbStub, id 0x1000002c9, registered, matche$
| | | | | +-o ATY_Zonalis <class ATIFramebuffer, id 0x1000002d7, registered, m$
| | | | +-o ATY,Zonalis@1 <class AtiFbStub, id 0x1000002ca, registered, matche$
| | | | | +-o ATY_Zonalis <class ATIFramebuffer, id 0x1000002df, registered, m$
| | | | +-o ATY,Zonalis@2 <class AtiFbStub, id 0x1000002cb, registered, matche$
| | | | | +-o ATY_Zonalis <class ATIFramebuffer, id 0x1000002e5, registered, m$
| | | | +-o ATY,Zonalis@3 <class AtiFbStub, id 0x1000002cc, registered, matche$
| | | | | +-o ATY_Zonalis <class ATIFramebuffer, id 0x1000002eb, registered, m$
| | | | +-o ATY,Zonalis@4 <class AtiFbStub, id 0x1000002cd, registered, matche$
| | | | | +-o ATY_Zonalis <class ATIFramebuffer, id 0x1000002f1, registered, m$
| | | | +-o ATY,Zonalis@5 <class AtiFbStub, id 0x1000002ce, registered, matche$
| | | | | +-o ATY_Zonalis <class ATIFramebuffer, id 0x1000002f7, registered, m$
what can i do?