> It is hard to describe how the screen looks like but: > It looks like the framebuffer isn't sent by the ramdac in a linear > fashion. The screen gets > divided into tiles of the 32x32 pixels or something. If a small window > (xlogo) is placed in > the top left corner I see parts of the window scattered all the way to > right hand side of > the screen. > The cursor is drawn ok though but I guess it is because it's a hardware > cursor. > > If I look at the monitor before starting X I see some text from the > kernel boot. It looks > like the text the kernel prints just as it starts booting (initializing > radeondb). This is > displayed without the "effect" I tried to describe above.
Hrm... looks like surface tiling, which is weird, as radeonfb (at least recent ones) will clear that at boot.... But maybe there's a bit somewhere that enables it specifically for the second head that that we fail to clear properly. I'll investigate. Ben.
