No dual monitor under Boot Camp Windows XP Pro on Mac Pro with ATI HD 2600 XT


recently got brand new mac pro standard ati radeon hd 2600 xt graphics card. 6 gb or ram, 320g hd.

on mac side (leopard), works perfectly: second monitor (a plasma screen connected hdmi second dvi of ati card) recognized , can use extended monitor or in duplicate mode. works great on mac side.

under bootcamp (windows xp pro) however, nothing: in display properties second monitor appears, grayed out, , when chose activate (either extending desktop or in clone mode), stays grayed out , nothing gets displayed on it.

tried following (in pretty every possible combination - thank god winclone allows me restore bootcamp image without having reinstall on windows side...):

a) bootcamp 2.0 (installed default bootcamp assistant)
b) update bootcamp 2.1

1) windows xp pro sp2c vanilla install (from windows xp install disk)
2) update windows xp sp3 (with , without bc 2.1 - bc 2.1 didn't seem required sp3 - maybe because mac pro , not mb or mbp)

i) ati drivers installed default bootcamp assistant (bc 2.0)
ii) latest ati drivers found on ati web site under bootcamp / mac pro (interestingly, ccc install works, seems driver set not include 1 hd 2600 xt - when install driver set, tells me no compatible hardware found...)
iii)latest ati drivers found under windows xp (these did include 1 hd 2600 xt)

nothing seems work. read posts ati catalyst utility showing 3rd monitor @ point, never got 3rd monitor showing in of many many trials.

considering upgrading nvidia 8800 gt dual screen work under bootcamp/windows xp because need , read everywhere drivers nvidia far better ati ones.

advice? should try next before getting 8800 ?

thanks!
 

not can if latest ati drivers not allowing second monitor utilized windows xp. nothing new ati , "win driver of month" mentality. can give nvidia try make sure purchase card seller allows returns. experience nvidia support , drivers has not left me impressed them although better deal ati.

don't forget, if install nvidia you'll have working again in os x - should easier xp - never know. :(

regards.
 


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