On Wed, 14 Apr 2010 22:07:08 -0500 Bill Gatliff <b...@billgatliff.com> wrote:
> Put simply, I have an MPC5200b platform with a Fujitsu "Lime" GDC, and > I'm trying to run Debian squeeze's xorg on it. > > Actually, I *have* Debian squeeze's xorg running on the platform just > fine, with a 2.6.34-rc1 kernel (kernel.org). Problem is, every single > diagonal line is very blocky--- not smooth at all. I used to think this > was a problem with X's fonts, but now I don't think so because the mouse > cursor's diagonal lines also look equally bad. > > It's almost as if any time the platform tries to draw a diagonal line, > truncation/rounding errors are causing it problems in figuring out which > pixels to turn on and off. On all PowerPC based boards with Lime (PPC440EPx, MPC85xx) I have seen so far there is a similar problem with direct access to the frame buffer in 16-bit mode. > A non-Linux kernel on this hardware, running a non-X GUI, seems to work > fine so I think the hardware isn't the problem. It is possible that this non-X GUI doesn't access the frame buffer directly but only uses the accelerated driver for rendering. In this case all drawing is done by Lime itself triggered by 32-bit accesses to the drawing command FIFO. > Anyone have any suggestions on where to start with this one? Anyone > else running a similar configuration with any success? I'm completely > lost, and running out of hair *fast*... You probably have to fix Xorg driver for swapping. Anatolij _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org https://lists.ozlabs.org/listinfo/linuxppc-dev
