Re: [Xen-users] GTX 670 Tips?

[Gordan Bobic <gordan@xxxxxxxxxx>]

On 10/27/2013 06:14 AM, Casey DeLorme wrote:
> @Andrew, sorry I will do that going forward.
>
> @David, having trouble with linux and could use some more info.
>
> I created a linux domu config with `gfx_passthru=1`, but the system
> never boots (sits at "serial0 console" when seen through vnc or sdl).
I'm pretty sure gfx_passthru=1 doesn't work without additional patches 
to do things like load and execute the VBIOS in domU.
> If I omit that flag, I get video post-installation (not during install)
> from the `nouveau` driver, which works but isn't performant. However,
> after installing nvidia drivers and rebooting, I only get video over
> vnc/sdl.
So you get VNC video during installation, and you get external output 
from the card from the nouveau driver. So far so good.
FYI, the noiveau driver isn't _too_ bad. If all you need is 2D 
acceleration, I can confirm that an ageing 8800GT with nouveau driver is 
perfectly capable of running HD video scaled up to 3840x2400 
(2x1920x2400 across 2 monitors).
> Nobody has really written any definitive guides on linux vga
> passthrough, so I'm not sure where to go from here.  I am not sure how
> Xorg works, that might be a good first step, but I tried creating
> configurations based on debian's documentation
> (https://wiki.debian.org/NvidiaGraphicsDrivers#configure).
Remind me - did you modify your card into a Quadro/Grid?

I'm sure I remember David mentioning he had Linux domU running with 
accelerated drivers.
Gordan

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