> > >If you point the second CRTC to the same frame buffer region, you'll have >mirrorring, else you have two different heads.
In most cases (like what I do with aty128fb), you don't even need to use the second CRTC. Just enable both outputs and let them source from the first CRTC. >> So i suppose the you will need to use a trick similar to the matrox one >to get >> dual headed accelerated X to work. > >Yep. The same is true for atyfb (yes, I should add mirrorring/dualhead support >for the Mobility in my Vaio :-). > >> But could it be possible to block this in hardware, and thus force mirroring >> only operation ? > >I suppose yes. > >> How many different rage 128 mobility are around anyway ? > >No idea. I just at the ATI website earlier today, and they seem to have new >variants called M4 and Radeon Mobility.
