i have an mac running tiger server. under certain startup conditions — typically when starting up after restoration of power — my mac appears to try to screw up in sensing what type of monitor it is connected to and i think it is getting it wrong.
the symptoms: my monitor (dell 2405 lcd), attached via normal vga output, doesn’t like the video signal it gets from the mac and says “can not display this mode”. connecting via vnc and telling the machine to “detect displays” does not change the situation. however, if i simply restart, everything goes back to normal.
under normal startup conditions, the mac can drive the monitor perfectly. it senses the correct make and model of the monitor and can drive it at it’s native resolution. so it is not merely a hardware incompatibility problem.
is there any way i can force the mac to “reset” the video – i.e. to re-sense what kind of monitor it thinks it is connected to and/or change the video signal it is putting out? (“detect displays” doesn’t cut it, as noted above).
the details:
mac is an old blue and white g3 with g4 processor.
video card is the old original rage 128.
monitor is dell lcd 2405 attached via an iogear kvm
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