[Solved] Can't get external monitor to display correct resolution

I have a laptop with 1280x800 resolution, I hooked up a spare monitor we had sitting around that has a native resolution of 1280x1024 to my laptop. When I hook it up the external monitor displays a resolution of 1024x768. I use KDE 4.5, so I tried to change the resolution for the external monitor in System Settings but 1024x768 is the highest resolution listed.
I've tried messing around with xrandr through the command line (somewhat anyway) but I'm at a loss in trying to get the external monitor to display its native resolution. I'd like to get the external monitor to possibly replace my laptop monitor as it would add another 224 vertical pixels. Anyone have any ideas?
Last edited by herrvideman (2010-08-31 02:17:48)

You had said the native resolution is 1280x1024 -- I therefore assume this is an LCD monitor.
I would not generally expect LCDs to flicker. At what vertical frequency are you driving the display? Most LCDs operate at 60Hz. This is regardless of the local power line frequency or television standard.
Many CRT monitors are driven at 75 Hz to keep them from flickering or from "beating" with ambient lighting that is flickering at the local power line frequency (50 or 60 Hz). Again, this is not the correct thing to do with LCDs.
Bottom Line: Make sure your vertical frame rate is 60 Hz.

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[Solved] Can't get external monitor to display correct resolution

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