SMP G4, BK 2.4.1, aty128, and 22" Apple Cinema Display (ADC)

SMP G4, BK 2.4.1, aty128, and 22" Apple Cinema Display (ADC)

[T E Whalen]

I'm running Debian (testing) on the above configuration.  I'm trying to
get XFree 4.0.2 to work.  Right now, I can boot with the "novideo"
option, and XFree 3.3.6 will work in 1600x1200@8bpp.

With the BK kernel sources I rsync'd and compiled today (2.4.1), I
tried various "aty128fb" kernel options, and none of them displayed
properly.  Relevant lines from yaboot.conf (neither 'append' line
works):

> image=hd:11,/vmlinux
>  label=Linux-test
>  root=/dev/hda11
>  read-only
>  append="video=aty128fb:vmode:22"
>  #append="video=aty128fb:"

I'll see the BootX text flash by, then the screen will immediately turn
black.  No penguins.

/proc/fb says:
0 OFfb /pci@f0000000/ATY,Rage128Pd@10

/proc/pci says [in part]:
PCI devices found:
  Bus  0, device  11, function  0:
    Host bridge: PCI device 106b:0020 (Apple Computer Inc.) (rev 0).
      Master Capable.  Latency=16.
  Bus  0, device  16, function  0:
    VGA compatible controller: ATI Technologies Inc Rage 128 PF (rev 0).
      IRQ 48.
      Master Capable.  Latency=255.  Min Gnt=8.
      Prefetchable 32 bit memory at 0x94000000 [0x97ffffff].
      I/O at 0x12400 [0x124ff].
      Non-prefetchable 32 bit memory at 0x90000000 [0x90003fff].

fbset says:
mode "1600x1024-57"
    # D: 100.000 MHz, H: 60.976 kHz, V: 57.308 Hz
    geometry 1600 1024 1600 1024 8
    timings 10000 16 16 16 16 8 8
    rgba 8/0,8/0,8/0,0/0
endmode


--
               'Dry no plastic or rubberized articles'
                     Ted Whalen - tew@debian.org
                        <http://introvert.net>

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Re: SMP G4, BK 2.4.1, aty128, and 22" Apple Cinema Display (ADC)

[Michel Dänzer]

T E Whalen wrote:
>
> I'm running Debian (testing) on the above configuration.  I'm trying to
> get XFree 4.0.2 to work.  Right now, I can boot with the "novideo"
> option, and XFree 3.3.6 will work in 1600x1200@8bpp.

[snip]

> fbset says:
> mode "1600x1024-57"

I thought you wanted 1600x1200, can you try fbset 1600x1200-60 ? Dunno if
aty128fb supports that mode on bootup, in doubt check the source.


--
Earthling Michel Dänzer (MrCooper)    \   Debian GNU/Linux (powerpc) developer
CS student, Free Software enthusiast   \        XFree86 and DRI project member

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Re: SMP G4, BK 2.4.1, aty128, and 22" Apple Cinema Display (ADC)

[Holger Bettag]

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Michel Dänzer <michdaen@iiic.ethz.ch> writes:

>
>
> T E Whalen wrote:
> >
> > I'm running Debian (testing) on the above configuration.  I'm trying to
> > get XFree 4.0.2 to work.  Right now, I can boot with the "novideo"
> > option, and XFree 3.3.6 will work in 1600x1200@8bpp.
>
> [snip]
>
> > fbset says:
> > mode "1600x1024-57"
>
> I thought you wanted 1600x1200, can you try fbset 1600x1200-60 ? Dunno if
> aty128fb supports that mode on bootup, in doubt check the source.
>
The LCD panel inside the Cinema Display only understands a single mode:
1600x1024 at 59.94 Hz, with a dot clock of 107.24 MHz. Olaf Hering added
the vmode 22 according to a spec sheet I found somwehere on the 'net. I
am using a Cinema Display with a patched 2.2.18 kernel in said mode; it
does work at least for me. So far I tried neither XFree 4.x nor any
2.4 kernel.

  Holger


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