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Re: [Xen-users] Black screen with 2.6.31 pv_ops

To: Christopher Schramm <xen@xxxxxxxxxxxx>
Subject: Re: [Xen-users] Black screen with 2.6.31 pv_ops
From: Pasi Kärkkäinen <pasik@xxxxxx>
Date: Fri, 4 Dec 2009 09:26:36 +0200
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On Thu, Dec 03, 2009 at 04:41:12PM +0100, Christopher Schramm wrote:
> Hi,
> I'm running Debian squeeze with a 2.6.31 kernel which I would like to
> use as dom0 in xen.
> The kernel is configured with
> I've built xen.gz and xen-tools from current xen-unstable git version.
> Important part of grub entry looks like this:
> multiboot /boot/xen.gz
> module        /boot/vmlinuz-
> root=UUID=64f4bee7-01c8-4db2-949e-1728524f35aa ro  quiet console=tty0
> module        /boot/initrd.img-

You should have console=hvc0.

See this wiki page for more information:

-- Pasi

> The problem: Xen starts up without problems but when dom0 should appear
> there's nothing but a black screen. I'm not sure, but it doesn't seem
> like the machine is working. Also it's not reachable via network.
> Since the motherboard hasn't got a serial port, I cannot use Xen's
> debugging. Well, I got a USB -> Serial adapter, but I wouldn't expect to
> get it running on Xen. Is it possible to not show the dom0 but keep
> getting Xen's output?
> Or am I missing something? Is my setup broken by design?
> Thanks for any hints
> Christopher Schramm
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