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Re: [Xen-devel] Problem: Pattern with vertical colored lines on the dom0

To: Dietmar Hahn <dietmar.hahn@xxxxxxxxxxxxxx>
Subject: Re: [Xen-devel] Problem: Pattern with vertical colored lines on the dom0 screen
From: Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>
Date: Mon, 20 Sep 2010 16:59:26 -0400
Cc: Xen-devel <Xen-devel@xxxxxxxxxxxxxxxxxxx>
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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?

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