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Re: Framebuffer and PowerPC's

On  25 Jul, this message from Carlos de la Cruz echoed through cyberspace:
> I 've succesfuly installed and configured Xfree on my PowerMac 8500, but I
> only can use the FBDev driver

There's no native support in XFree for the 8500's built-in graphics card
('control'). fbdev is your only option.

> (with an 24 bit color depth), but only
> with a 640x480 resolution. Do anybody knows how can I change the Framebuffer's
> resolution at boot or at the commandline?

First, make sure you have enough VRAM for the resolution/color depth you
want to use.

Then, your text console will by default run the mode you were in last
under MacOS. So, to start, boot back to MacOS once and set your desired
video mode there. (What happened to nvvideo, or whatever it was called,
that permitted to set the OF video mode under Linux?).

Third, you can change your text console resolution/depth with fbset.
'man fbset' and 'less /etc/fb.modes'. To change for all consoles at
once, do 'fbset -a <mode>'.

Fourth, you can configure X's resolution in the config file
(/etc/X11/XF86Config-4 for a XFree 4 install on woody) thus:

Section "Screen"
        DefaultDepth    24
	SubSection "Display"
		Depth           8
		Modes           "1152x864" "1024x768" "800x600" "640x480"
        SubSection "Display"
                Depth           15
                Modes           "1152x864" "1024x768" "800x600" "640x480"
        SubSection "Display"
                Depth           24
                Modes           "1152x864" "1024x768" "800x600" "640x480"

The highest modes will only be available if you have enough VRAM.
/var/log/XFree86.0.log will tell you what got chosen, what got ignored,
and why.

There _may_ be a problem running X in a resolution differing from you
console resolution. If so, report back.



Michel Lanners                 |  " Read Philosophy.  Study Art.
23, Rue Paul Henkes            |    Ask Questions.  Make Mistakes.
L-1710 Luxembourg              |
email   mlan@cpu.lu            |
http://www.cpu.lu/~mlan        |                     Learn Always. "

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