[G4] 12" Apple Performa CRT on a G4/1ghz MP???

[Ronald Steinke]

On 22 Feb, 2005, at 12:07, J.R.Rosen wrote:

Needless to say, the 12" just "rolled" and "rolled".  The computer was 
trying to use the 12" as the "main" with just a blue background on the 
17" Studio.  I could see an image through the rolling but could not get 
to the preferences to adjust the "Monitors".  I tried turning the 12" 
off, but the 17" was still acting like the secondary monitor.

Did you just turn off the 12" or did you completely disconnect it? Did 
you reboot with both monitors attached or just the 17"?

I had similar symptoms with a 7300/200 when I tried to hot-swap 
monitors once. I turned off the 15" Apple monitor and plugged in a NEC 
15" which was automatically recognized and worked perfectly. I then 
plugged in the 15" Apple again and it gave me the rolling screen.

I had to reboot with the NEC connected, change the resolution to 
600x400, shut down, reconnect the Apple monitor, and then reboot again 
to get the Apple 15" monitor to be recognized. Then, I could reset the 
resolution to my old preference and continue my work.

Hope this short story can give some help.