Re: Problem: Pattern with vertical colored lines on the dom0 screen

[Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>]

On Fri, Sep 17, 2010 at 03:20:11PM +0200, Dietmar Hahn wrote:
> Hi list,
> 
> I have a problem with a new laptop (reproducable on other machines too) and the
> xen hypervisor.
> When the hypervisor gets booted with VESA mode 800x600 I see some messages and
> then the screen contents is switched into a pattern of vertical colored lines
> and never comes back.

> In text mode all works well, but later the pattern appears when the X servers
> starts.
> I disabled VTd in the bios and now all went fine.

So no VT-d and the you have no trouble even with VESA 800x600? Are there any
errors reported by Xen when you use VT-d? Can you ping the machine even
if the screen is showing vertical lines?
> I saw this first with SLES11 SP1 but could reproduce it with the xen-unstable
> hypervisor.

What about the Linux kernel? Is this happening when you use the PVOPS kernel?