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

["G.R." <firemeteor@xxxxxxxxxxxxxxxxxxxxx>]

Actually I appreciate if you can share your experience.
I really want to make sure if the issue is specific to my HW.
More below.

On Wed, Aug 7, 2013 at 6:25 PM, Pasi Kärkkäinen <pasik@xxxxxx> wrote:
> 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?
I7 3770 with IGD 4000.

> - HVM guest Windows version? 32b/64b?
win7 64 bit version.
> - Xen version
All version from xen 4.1.x to xen 4.3
> - I assume you're using qemu-traditional.. which additional patches?
You should know the patch set I used -- the patch series I created and
tried to submit (you pinged me several times on it).

> - dom0 kernel version
All kernel versions I ever used. 3.6.x 3.8.7 3.9.8

> - xm or xl?
xl
> - HVM guest configfile

name = 'gamebox'
builder = 'hvm'
vcpus = '4'
cpus = "0-4"
memory = '3072'

disk = ['file:/mnt/vmfs/Windows/GameBox/gamebox.img,xvda,w']
boot = 'c'

vif = [ 'mac=00:18:3E:51:60:4C,bridge=xenbr0,model=e1000' ]

on_poweroff = 'destroy'
on_reboot = 'restart'
on_crash = 'restart'

#Para-virtualisation support
xen_platform_pci='1'
#Microsoft Hyper-V support
viridian='1'

# Use local time instead of UTC
localtime='1'
# Absolute coordinate pointer device, better support VNC for windows.
usbdevice='tablet'

#Passthrough
device_model_version="qemu-xen-traditional"
gfx_passthru=1
pci=['00:02.0', '00:1b.0', '00:1a.0']

vnclisten = '0.0.0.0'
vncpasswd = ''
serial='pty'

>
>
> 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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