I know its not about a kvm switcher, but many people have had the same sort of problem when running the ATi 5### series in eyefinity with a displayport to vga passive adapter.
My setup is: new computer built in the last 2 weeks =D
AMD Phenom II x4 B55 BE @ 4.2GHz
ATi 5770 stock + NVidia 8800GTS 640mb stock
MA790X-UD3P Gigabyte
arctic cooler 64 pro with arctic silver 5
coolermaster silent pro 700W and scout case
Samsung F3 1Tb
Generic 800mhz RAM 4gb
Windows 7 x32 (for now)
3x lg flatron w2261vp
And I've found when running 3 x LG W2261VP through 2xDVI and 1xDisplay port to VGA adapter that the displayport is always acting odd, try entering or exiting eyefinity from catalyst control and the windows hardware remove and add noise occurs followed by
teh displayport screen defaulting to 800x640 and eyefinity subsequently not working. Device manager picks it up as non-generic pnp monitor and doesn't work, if i then run windows screen resolution and detect screens i can tehn select 1920x1080 on the displatport
and extend the display on the dvi monitors which often get disconnected at detect.
Strangely this didn' happen when i first got the card, spent awhile getting the 8800 to work with it and activate physx, then received the adapter plugged it in and everything worked, played a few games, empire total war, dirt2, grid, left 4 dead, with everything
working fine. Then 1 boot up later (because i left the pc and it went to sleep and displayport monitor wouldn't wake up again) and the display port started as 800x640 and catalyst control would crash whenever I tried running eyefinity.
So i found lots of forums with people having the same problem and thinking it was due to bad adapters or a bad ati card, but one post pointed me to this forum and the reference to the regedit for the EDID_OVERRIDE did the trick almost immediatley. Simple
fix considering i've never used a registry editting tool before, jsut had to remember bits to bytes conversion lol. So we need to keep this forum page going so hopefully microsoft will realise a majority of their primary market demand a fix, and they'll get
of their a**** and do something about this very frequent problem.