Re: Help with X using ATI pci card?
I can only give you some hints.... nontheless:
Try to autogenerate a new XF86Config-4 via "xf86config" (this worked
perfecty fine for me, ATI Radeon on an ibook)
4) the ATI card I believe is a NexusGA, because it
matches specs on the ATI website. But the chip
on it says "ATI Rage 128 3D AGP".
Take what 'lspci' says (as root, or /sbin/lspci as a normal user).
5) the card is installed in the first PCI bus on
the PowerPC 7500
You shouldn't have to know about this, lspci tells you, but note that
the lspci outputs the BusID in base 16, i.e. Hex, yet in X you need
decimal, e.g. "00:10.0" becomes 'BusID "PCI:0:16:0"' in the config.
6) the Xserver is 4.0.1, using the "ati" driver for
the card driver
I do not know if a newer Xfree86 might help.
I calculated these modelines -- following kernel
documentation -- from the file /etc/fb.modes found in
Debian, which according to its header says they were
derived from the ATI Mach64 documentation. I have
also calculating modelines by hand using the howto.
Most on the time, the image produced by these
Modelines either
a) exceeds the signal the monitor can receive,
b) produces a cross-hatch artifacted display,
completely unreadable
c) or gives a strange overlapped-duplicated image of
my desktop with no arrow (the most promising).
If you at least get a picture and the modelines are not completely off
get an xterm and start "xvidtune", then move the picture untill it fits
better, press "show" and put these corrected modelines into the config.
I also don't know if using 2 monitors by just switching them is possible
with the same config, even though both have modelines (not xinerama I
presume).
HTH
-Thomas
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