Re: 8.0_BETA on Mac Mini G4 with bad CD drive...

[Havard Eidnes <he%NetBSD.org@localhost>]

>> IIRC, if OFW detects that there's no monitor connected to the machine
>> it will not init the card properly.  To force it, you need to set
>> boot-command to something like
>>
>>   ." hello" cr " screen" output boot
>
> That worked nicely on my just-inherited PowerMac G4 which also
> had this problem.

However, on one of my Mac Minis this does not work to get me a
working display, and I suspect something else is at play there.
My other Mac Minis are 1.5GHz variants, i.e. the "silent upgrade"
which means they have the 1.5GHz CPUs and 64MB of video ram.

This particular Mac Mini is a 1.25GHz variant, so it only has
32MB of video ram.

My 1.5GHz Mac Minis all probe radeonfb with:

radeonfb0 at pci0 dev 16 function 0found EDID property...
: ATI Technologies Radeon 9200 5962 (rev. 0x01)
radeonfb0: Video BIOS not present
radeonfb0: No video BIOS, using default clocks
radeonfb0: refclk = 27.000 MHz, refdiv = 12 minpll = 125000, maxpll = 400000
radeonfb0: 64 MB aperture at 0x98000000, 64 KB registers at 0x90000000
radeonfb0: display 0: initial virtual resolution 1920x1200 at 8 bpp
radeonfb0: using 32 MB per display
radeonfb0: port 0: physical 1920x1200 60Hz
radeonfb0: port 1: physical 1920x1200 60Hz
wsdisplay0 at radeonfb0 kbdmux 1: console (fb, vt100 emulation)

However, the 1.25GHz variant also probes this as:

radeonfb0 at pci0 dev 16 function 0found EDID property...
: ATI Technologies Radeon 9200 5962 (rev. 0x01)
radeonfb0: Video BIOS not present
radeonfb0: No video BIOS, using default clocks
radeonfb0: refclk = 27.000 MHz, refdiv = 12 minpll = 125000, maxpll = 400000
radeonfb0: 64 MB aperture at 0x98000000, 64 KB registers at 0x90000000
radeonfb0: display 0: initial virtual resolution 1920x1200 at 8 bpp
radeonfb0: using 32 MB per display
radeonfb0: port 0: physical 1920x1200 60Hz
radeonfb0: port 1: physical 1920x1200 60Hz
wsdisplay0 at radeonfb0 kbdmux 1: console (fb, vt100 emulation)

and just as those lines are being printed, video output is shut
off and my monitor goes into "energy save mode".  I suspect the
detection of "64MB vs. 32MB video memory" is faulty or missing...
(The machine otherwise boots up and works.)

Regards,

- Håvard