Re: [Xen-users] Have you ever met this behavior with IGD passthrough?

[Pasi Kärkkäinen <pasik@xxxxxx>]

On Wed, Aug 07, 2013 at 06:16:31PM +0800, G.R. wrote:
> Hi guys, any comment on this?
>

Can you please remind about your configuration:

- Which CPU? Which IDG/GPU? 
- HVM guest Windows version? 32b/64b? 
- Xen version
- I assume you're using qemu-traditional.. which additional patches? 
- dom0 kernel version
- xm or xl?
- HVM guest configfile


Thanks,

-- Pasi
 
> On Fri, Jul 26, 2013 at 3:04 PM, G.R. <firemeteor@xxxxxxxxxxxxxxxxxxxxx> 
> wrote:
> > Hi guys,
> >
> > I know that both of you are playing with IGD passthrough. So I would
> > like to check with you if I'm the only one that saw this behavior.
> > In my system, the panel becomes flickering rapidly with different
> > colors after domU starts. This lasts until the guest loads gfx driver.
> > There is a workaround by loading the VGA module in GRUB2, which
> > greatly shorten the time it flickers. But with a natively installed
> > windows guest, the flickering lasts until the OS get the login screen
> > prepared. But if the windows is not properly shutdown and the system
> > enters the repairing screen in next boot, you can simply see nothing
> > in this case.
> >
> > This is not show-stopper but is quite annoying. But to my surprise, it
> > seems that nobody mentions this behavior in blogs / mail-lists. What's
> > your case then?
> >
> > PS: Previously (e.g. xen 4.2.x), this flickering only happens happen
> > on a second guest boot and later-on (Per host reboot). I just upgraded
> > to xen 4.3.0, and haven't got chance to see if this behavior has
> > changed.
> >
> > Thanks,
> > Timothy

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