Afaik this is needed only on Vista and the new nVidia drivers. There seems to still be lots of confusion, it is very possible to get 5040x1050 Triplehead support on the newest drivers. If this doesnt work, IMO you have a monitor problem. I have tested this on 2 entirely separate and quite different systems.
Well you may think it is a monitor problem, but it is not..you're just lucky twice! ;). My system works fine in XP @5040..automatically. But even following your guide I cannot get it to work so any help would be appreciated.
So on my system I get failed test when I try to set 1680x1050@57; EDIT: however I also get the failed test error at 59 and 60Hz as well even though I can select those under normal settings.
When I use the GXM installed 5040 res the outer 2 monitors work but the middle one (which is admittedly a different version Dell that the outers) gets an out of range error. EDIT1: The settings on this res are exactly as your example apart from the Hor scan res is 60.88 and the pixel clock is 273.45- this must be why the centre screen gets out of range. EDIT2: I cannot bring up the centre OSD when it gives the out of range error but the outer monitors show @48Hz!!??!!
When I try manually setting the res using your technique the bizarre thing is when I hit test the screens go blank for a second then I get a 'test failed message'. However the desktop INCLUDING the centre monitor is at 5040x1050@57 and working fine! As soon as I hit the OK on the test failed message the screens blank and go back to 1680x1050. I can recreate this using 55Hz, 59Hz, 60Hz etc. (I have noticed that at 57Hz the Hor scan rate shows at 61.49, other than that it is the same as yours.)
Rather frustrating! Especially as I have installed Vista just to check if I have a deep glitch in XP (games keep crashing on load or freezing) or a hardware error.
So how do I get past this weird 'test failed' but it is actually working error? If there was someway to bypass the test and just set it FFS!
I am using the new (DEC) GXM and 181.20 which both work fine in XP
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