Accel. Video on PB G3/300?

Geert Uytterhoeven Geert.Uytterhoeven at
Tue Jun 22 01:17:00 EST 1999

On Mon, 21 Jun 1999, Albrecht Dreß wrote:
> Geert Uytterhoeven wrote:
> > On Mon, 21 Jun 1999, Albrecht Dreß wrote:
> > >       I managed to install R5 on a PowerBook G3/300, but I could not get accelerated
> > > video running. I used "video=atyfb:vmode:14,cmode:32,mclk:xx" with xx from 63 to
> > > 73, but got always the "garbage screen". Has anyone had better results?
> > 
> > Which kernel version is shipped with R5? Does the kernel tell you the estimated
> > clock crystal frequency (XTAL) during the initialization of the ATI frame
> > buffer device (atyfb)? If not, they're using a kernel without the clock crystal
> > frequency estimation patch (present in 2.3.6).
> The kernel version is 2.2.6. If I start with the "No video driver" option
> checked (from BootX), the startup messages siplly tell me that
> MacOS display is /pci/ATY,RageLTPro
> Using unsupported 1024x768 ATY,RageLTPro at 82801000, depth=32, pitch=4096
> Console: switching to colour frame buffer device 128x48
> fb0: Open Firmware frame buffer device on /pci/ATY,RageLTPro
> Unfortunately, I can not telnet yet to the PB, so I can't see the startup
> messages when I use the atyfb option...

Hence you need the clock crystal frequency estimation patch to be able to use
atyfb and acceleration.

Copying drivers/video/atyfb.c from 2.3.6 should do the trick.



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

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