[G4] Help! 450MP Inverted Colors Display problem

Richard Smykla rsmykla at verizon.net
Tue Jun 10 19:12:34 PDT 2003


Kevin,

Check your universal access pref pane. . .  there is a key 
combination that toggles B&W mode on and off 
'control-option-command-*'

This is most likely your problem and solution . . .  HTH.

Rick


>Hi all.
>I'm running a Sawtooth G4 450DP, stock ATI rage128 video card,
>1024mb ram, OS 10.2.5.
>
>I'm stumped... Last night I was surfing the net w/safari-1.0B2(v73)
>and the beachball progression wheel came up. If the wheel lasts long
>(which isn't often) I usually force a restart, but I got up did some
>other things and let it run it's course. After approx. 10min. the screen
>turned black & white - the beachball went pitch black but was still
>present. I then hit the force restart button.
>
>Now when I restart, the Blue screen is present during booting and then
>just as the desktop appears, fades to B/W. The display control panel
>defaults to 256 colors when rebooted, but only displays B/W. When
>I switch to Millions, there's a brief flash of blue and everything is then
>"Inverted" (blue is yellow, etc.). When I make a screenshot, take it to
>Photoshop and select "invert", it corrects it (on my inverted screen anyway).
>This tells me that somehow the display software is using a negative
>color pallet for some reason. I never changed anything, and everything,
>until this event, has been fine for months.
>
>The only way I can get the display to display properly is to startup in
>Safe Mode and starting up in OS 9.2 works also. So this proves that
>it's not my monitor  + it's been fine until the spinning beachball incident.
>
>Here's what I've done:
>Reset pram, did a Cuda reset, Repaired permissions, Reinstalled OSX
>10.2.5, Downloaded and installed latest drivers from ATI.
>
>Any other suggestions?  is there a preference I can trash?
>Could a problem with Aqua suddenly have cropped up (I can't utilize it
>with the ATI Rage128 anyhow).
>Like I said at the beginning.. I'm stumped.
>




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