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I have installed CentOS 6.5 on a Dell poweredge t420 and now, i try installing graphical drivers.

I found dell driver for Red Hat ED 6 and follow instructions, but the Xorg configuration make an error :

/dev/dri/card0 doesnt found

The Dell .rpm package installation doesnt make anything, a more recent package is already present.

I have only entered following command in terminal :

Xorg :1 -configure

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Is there any reason for using :1? Have you tried without that? –  MadHatter Mar 26 '14 at 17:08
Fatal Server error : display is already active for display 0. –  abon999 Mar 27 '14 at 8:09
I don't know why, but graphical gesture is not slow now, but the max resolution is 1024x768. Also a glamor.conf is present now. –  abon999 Mar 27 '14 at 8:30

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