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[Xen-users] VGA passthrough - GA-890FXA with ASUS EAH5750 video

To: xen-users@xxxxxxxxxxxxxxxxxxx
Subject: [Xen-users] VGA passthrough - GA-890FXA with ASUS EAH5750 video
From: Eric Houby <ehouby@xxxxxxxxx>
Date: Sun, 21 Nov 2010 12:15:44 -0800 (PST)
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I would like to report to the group that I have been successful with VGA passthrough using the following configuration:

Gigabyte GA-890FXA-UD5
ASUS EAH5750 1GB GDDR5 video
Fedora 13
XEN 4.0.1
Windows 7 64 bit HVM guest

Xen was installed per Pasi's Fedora 13 Xen 4.0 Tutorial found here:


The tutorial was very helpful and many thanks to Pasi for putting it and the RHEL6 tutorial together.

Initially I could not get VGA passthrough to work, all the VGA passthrough procedures I found included putting gfx_passthru=1 in the VM configuration file but every time I did this the boot process would hang with a prompt at the QEMU console.  After several days of trying to figure this out I finally hit the magic combination...  VGA passthrough worked without gfx_passthru=1 configured and the initial passthrough needs to be done while the VM is running.  I did the passthrough using the xm pci-attach command.  After doing this I found Windows detected the video card so I loaded the video drivers in the VM and rebooted and now it is working well.  Windows 7 reports the "Windows Experience Index" for Graphic and Gaming as 7.3/7.3 and id_perftest with Quake 4 was around 70fps at Ultra Quality 1920x1200.  I am not much of a gamer but that is plenty fast for me!



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