Re: [Xen-devel] [Xen-users] VGA passthough still not working

[Tobias Geiger <tobias.geiger@xxxxxxxxx>]

The more i think about it, the more i remember:

After installing Windows within DomU and after installing the Catalyst Driver, 
i remember disabling the Emulated Cirrus VGA Card within the Device-Manager in 
Windows; don't know exactly anymore, but this could be an important step so 
that the Catalyst Driver "takes over" correctly;

Another hint: To acces the VNC console:

xvncviewer localhost:5910
(if you use the DomU Config pasted)

and of course you need to adapt the DomU Config especially for the first boot - 
to include an ISO Image of the Windows-Install-CD , e.g.:

disk = [ 'phy:/dev/vg_ssd/win7system,hda,w' , 
'file:/path/to/windows.iso,ioemu:hdb,r' ]

also 
boot="dc"

would be better while installing Windows

Greetings!
Tobias




Am Dienstag, 24. Januar 2012, 16:15:29 schrieb Likarpenkov Alexander:
> TG> I was a bit un-percice regarding the "reboot" issue:
> 
>  TG> The passing-through itself works even after a reboot of DomU - the
>  TG> rebooted System spits out its Graphics normaly through the
>  TG> passed-through Card (NVIDA or ATI doesnt matter here) ; BUT:
>  TG> After a reboot it doesn't work properly. Meaning:
>  TG> Slow 3d Performance, i.e.
>  TG> unsable for real 3d apps, even a 3d Desktop;
>  TG> For example, when the Card gives you 70fps in a Benchmark after a
> fresh TG> Cold Boot, it only gives you 5-10fps after a reboot, this will
> be that TG> low until you reboot Dom0 also, not only DomU;
>  TG> hopefully i described the scenario better now...
> 
> I'm sorry. Errors are highlighted in red.
> 
>  That is, situations as follows:
> - There is a certain group who are trying to make a vga pass, but not
> successed (unsuccessfully) - In the second group turned out, the
> performance on the second restart the deplorable
> 
> I belong to the first group, but I use a pci pass and after 10-20 reboots
> the system does not lose the 3D performance.
> 
> Question for Tobias Geiger:
> You do not deign to describe the process step by step is the setup and
> configuration xen-linux-systeM to a successful vga pass?


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