Hello!

Thanks for your ideas.

Michael wrote:
> On Dec 29, 2007, at 07:24, Jan Henrik Sylvester wrote:
> 
>> I have an old iBook (clamshell) that has an "ATI 3D Rage Mobility 
>> graphics controller" with "ATI Mach64 adapter" according to 
>> XFree86.0.log, which matches what is reported by Open Firmware.
>>
>> On NetBSD 3.0.1, XFree86 did not work but died immediately. Xmacppc 
>> did work (though 8 bit colors did not look great). I postponed looking 
>> for the error that made XFree86 die to 4.0.
>>
>> On 4.0, both Xmacppc and XFree86 start, but both give totally 
>> distorted graphics (in different ways). I played a lot with 
>> XF86Config, but I cannot fix XFree86. (XF86Config seems to have no 
>> influence on Xmacppc.)
> 
> Yikes, I bet it's a Rage LT - neither machfb nor XFree86's atimisc 
> driver can handle it properly and I don't have the hardware so I can't 
> really look into it.
> What you can do is to use XFree86 with the wsfb driver, it is 
> unaccelerated and limited to whatever video mode OpenFirmware sets up 
> but at least it should give a usable X.

As Bruce noted, it gives:

(EE) wsfb(0): ioctl WSDISPLAYIO_LINEBYTES: Inappropriate ioctl for device
(EE) Screen(s) found, but none have a usable configuration.

>> What the display exactly looks like with XFree86 depends on the color 
>> depth. I describe it for 16 bit:
>>
>> The top quarter (full width) shows something that looks like xterms on 
>> the left, but with some "bars". Typing something into one of them, I 
>> only get a few dots. If that were fonts, they would be way to small. 
>> On the right, I see the clock, which basically looks correct, maybe 
>> too small, too. The mouse cursor looks ok.
> 
> Looks like X and the hardware disagree about colour depth. Try 8 bit, X 
> may fail to tell the DAC about pixel format change for some reason.

With 8 bit, the upper quarter looks similar, but with a little more 
distortion, the next section is not only a quarter but almost the rest 
of the screen with some black dots on green (not blue text), and the 
last section is similar (to 16 bit) but smaller and with black 
distorting the color bars.

>> (--) PCI:*(0:16:0) ATI Technologies Inc Rage Mobility L AGP 2x rev 
>> 100, Mem @ 0x91000000/24, 0x90000000/12, I/O @ 0x0400/8, BIOS @ 
>> 0x90020000/17
> 
> Hmm, not an LT after all, so it's probably the whole L series :/

In Open Firmware, it is /pci@f0000000/ATY,RageM_Lp@10, which has the 
model ATY,RageMobilityL.

Any more ideas?

Did anything change for Xmacppc from 3.0.1 to 4.0 that broke it for me?

Thanks,
Jan Henrik