[Pkg-xen-devel] Bug#785132: No screen refresh on Windows 8.1 with xen-hypervisor-4.5-amd64

[zer0 divide]

Package: xen-hypervisor-4.5-amd64_4.5.0-1_amd64.deb
Version: 4.5.0-1


Hi,

I use xen with sdl, not with vnc. When I boot on 
xen-hypervisor-4.4-amd64, everything is fine. With Debian or Windows 8.1 
I have a good display,

But when I choose at boot, the xen-hypervisor-4.5-amd64, things go wrong.

If I launch a xen Debian, I get some blur effect on the display.
And when I launch a xen Windows8.1, it is much worse. I only get a black 
screen, with some time, some screen update, BUT the system still boot 
normally. Indeed, I can access to the shared folders, and if I maximize 
and/or minimize the qemu window (on my Debian), I can get a  «refresh of 
the display». Thereby I can then see the desktop, but after resizing the 
qemu window, the display is no more refreshed.

Thus, if I move the mouse, the pointer remains motionless, but if I 
maximize and/or minimize the qemu windows, I can see what happened 
really, and where is exactly the pointer.

I tried with a lot of kernel with xen-hypervisor-4.4-amd64, everything 
is ok, but I always get the same issue only with xen-hypervisor-4.5-amd64.

Here a configuration file use for Windows 8.1, that works fine with 
xen-hypervisor-4.4-amd64 but not with xen-hypervisor-4.5-amd64 :

       kernel = "/usr/lib/xen-4.5/boot/hvmloader"
       builder='hvm'
       memory = 2048
       maxmem=3072
       videoram=256
       stdvga=1
       vcpus=4
       name = "Windows8.1"
       vif = ['bridge=br0']
       disk = ['file:/home/zer0/xen/xenwin8.1.img,hda,w']
       acpi = 1
       apic = 1
       hpet=1
       device_model_version = 'qemu-xen'
       boot="c"
       opengl=1
       sdl=1
       vnc=0
       autoballoon=0


Here the latest kernel with which I encounter the problem :

zer0 at debian:~$ uname -a
Linux debian 4.0.0-1-amd64 #1 SMP Debian 4.0.2-1 (2015-05-11) x86_64 
GNU/Linux

Or with

zer0 at debian:~$ uname -a
Linux debian 3.16.0-4-amd64 #1 SMP Debian 4.0.2-1 (2015-05-11) x86_64 
GNU/Linux

Thanks
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