I installed  xf86-video-intel 2.19, and there is another problem.
System stoped with blank screen,after grub window.
Xorg.0.log is in the attachment.
 
Thanks
____
Ginger Yuan
From: Eugeni Dodonov
Date: 2012-05-14 22:23
To: yuanjingjie
CC: Eugeni Dodonov; intel-gfx
Subject: Re: [Intel-gfx] [Q77 express][x86_64][DRI][DRM/intel]Does intel_agp in the latest kernel 3.3.4 or 3.4 rc6 support ivybridge (xeon E3-1285, 3.6GHz)?
On 05/14/2012 04:12 AM, 袁竞杰 wrote:
> After I use 3.4 rc6 kernel which contains IVB_GT2_IG, intel agp and VGA
> are recognized now.
> The "lspci" command now shows that PCI 00:00.0 uses Kernel driver
> agpgart-intel and PCI 00:02.0 uses i915 now.
> before I use the 3.4 kernel, there was nothing about the driver info.
> The /dev/dri folder is created now, containing card0 and controlD64.
> But the /var/log/Xorg.0.log still complains about "No devices detected",
> after loading
> /usr/lib/xorg/modules/drivers/intel_drv.so .
 
You also need xf86-video-intel 2.19, which adds support for this GPU to 
the Intel's X server 2d driver.
 
Eugeni