Re: [Xen-users] VGA Passthrough of AMD HD8670D IGP to HVM Win7 results in "Code 43"

[Gordan Bobic <gordan@xxxxxxxxxx>]

On 07/11/2013 10:46 PM, Casey DeLorme wrote:

> One of the biggest problems I have had with passthrough is the degraded
> state.  Not everyone has had the same experiences, but for me whenever
> the card is initialized (eg. Dom0 boot without passthrough, any DomU
> boot or reboot) subsequent initializations cause the degraded state.
That's a fair point - Gustav, do you have the radeon driver blacklisted? 
In lspci -vvv, does it show up as bound to the radeon driver or the 
pciback driver?
>   For me while in that degraded state installing and removing drivers
> has never succeeded.  It also is unreversible in the Windows 7 VM's I
> tried.  So my approach is generally to setup the system over VNC or SDL
> first, omitting all pci devices, then creating a dd backup of the
> logical volume to restore in the event of a problem during graphics install.
Snapshots help. I have learned to love ZFS for this kind of thing.

Gordan

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