Re: XFree864.01, G4, Ati Rage Pro 128 & Apple Studio 17"

[jon ewing <jon.ewing@mediasurface.com>]

At 22/11/2000, 15:13, Josh Huber wrote:

<snip>

> The video mode information returned while using offb (novideo) is not
> valid, as far as I know, so using this will not work.

thought that might be the case.... :-)

> Try the mode lines from Olaf (which I haven't tried, but let's assume
> they're right), and make sure you do NOT have UseFBDev in your
> /etc/X11/XF86Config file.  This sounds like it might be a bug in the
> aty128fb driver.

so.. boot with novideo...

the following appears in my boot messages:

...
kernel: Using unsupported 1600x1200 ATY,Rage128Pd at 96008000, depth=8, 
pitch=1792
kernel: Console: switching to colour frame buffer device 200x75
kernel: fb0: Open Firmware frame buffer device on 
/pci@f00000000/ATY,Rage128Pd@10
...

fbset reports that I'm at "1600x1200-49", though this probably isn't valid.

Add Olaf's modelines to the 'Section "Monitor"' part of my XF86Config, then set

Section "Screen"
...
        SubSection "Display"
        ...
        Modes "1600x1200@85x"

...

Make sure there's no UseFBDev anywhere in the file, then startx, which 
causes the screen to go blank. Can't switch back to the console, so power off.

Reboot and look at /var/log/XFree86.0.log which contains:

...
(WW) r128(0): Mode "1600x1200@70x" deleted (hsync out of range)
(WW) r128(0): Mode "1600x1200@75x" deleted (hsync out of range)
(WW) r128(0): Mode "1600x1200@85x" deleted (hsync out of range)
...
(WW) r128(0): Mode "1600x1200@85x" deleted (no mode of this name)
(--) r128(0): Virtual size is 1792x1344 (pitch 1792)
(**) r128(0): Default Mode "1792x1344": 204.8 Mhz, 83.7 kHz, 60.0 Hz
...

So, alter Xf86Config firstly to use Mode "1600x1200@60x" which causes the 
screen to go blank.
Reboot, look at /var/log/XFree86.0.log which is identical except for:

(--) r128(0): Virtual Size is 1600x1200 (pitch 1600)
(**) r128(0): Mode "1600x1200@60x": 162.0 MHz, 75.0 MHz, 60.0 Hz

So, alter Xf86Config firstly to use Mode "1600x1200@65x" which causes the 
screen to go blank.
Reboot, look at /var/log/XFree86.0.log which is identical except for:

(--) r128(0): Virtual Size is 1600x1200 (pitch 1600)
(**) r128(0): Mode "1600x1200@65x": 175.5 MHz, 81.2 MHz, 65.0 Hz


Both of these last two attempts did flash up a mangled image of the X 
display for a fraction of a second before going blank.

I guess I should just wait for the next version of aty128fb, right?

thanks again for all your help,

jon.