atyfb and 8500+ATI RagePro

Geert Uytterhoeven Geert.Uytterhoeven at
Mon May 3 19:52:32 EST 1999

	Hi Mike,

> I've been having major problems using the atyfb driver with my 8500, and
> finally have a clue or two to report.
> If I try booting the 2.2.6 kernel from the new beta R5 with an unchecked
> "No video driver" and "video=atyfb:vmode:19,cmode:16", I get a frozen
> machine and a colored static rectangle on my display.  If I use the same
> command line, but specify a lower mclk value (most all lower ones work),
> the system will boot, but I will get the same types of colored static rectangles.
> Recently, I came across a post my Hugy Caley about a "hacked" atyfb
> driver from Abe White.  I thought I'd give it a try.  Using the
> parameter line, "video=atyfb:vmode:19,cmode:16", I actually get a
> somewhat reasonable display, although the text of the console lines are
> repeated several times on each  line; every ~25 characters, the line
> starts over.  Also, the kernel Hugh sent me didn't boot all the way, not

Usually such repeats are caused by incorrect DSP values for the display FIFO.

> finding my boot device - probably unrelated to the video issue. The
> atyfb driver prints out (a close reconstruction from the garbled video):
> /bandit, ATY,XCLAIMVRPro atyfb: 3D RagePro(BGA, PCI) 0x479 rev 0x7c 12M
> SGRAM 230 MhzPLL, 100 Mhz MCLK
> Anyway, I'm not sure where to go from here.  I'm a programmer and
> willing to jump in, but not knowledgable about device driver debugging.
> Any help or advice would be greatly appreciated!

Sorry, no more clues :-(



Geert Uytterhoeven                     Geert.Uytterhoeven at
Wavelets, Linux/{m68k~Amiga,PPC~CHRP}
Department of Computer Science -- Katholieke Universiteit Leuven -- Belgium

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