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Re: [Xen-users] Kernel panic on Xen 4.0.1 + Debian Squeeze

  • To: xen-users@xxxxxxxxxxxxxxxxxxx
  • From: Ilya Kozlov <unicast.ru@xxxxxxxxx>
  • Date: Wed, 22 Sep 2010 23:35:21 +0400
  • Delivery-date: Wed, 22 Sep 2010 12:37:26 -0700
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  • List-id: Xen user discussion <xen-users.lists.xensource.com>

Hm, the problem is in grub2, with grub1 system boots successfully.

My currently grub2 menu entry is:
menuentry 'Debian GNU/Linux, with Linux 2.6.32-5-xen-amd64 and XEN 4.0-amd64' --class debian --class gnu-linux --class gnu --class os --class xen {
insmod ext2
set root=(hd0,1)
multiboot (hd0,1)/boot/xen-4.0-amd64.gz dummy=dummy iommu=off
module (hd0,1)/boot/vmlinuz-2.6.32-5-xen-amd64Âdummy=dummyÂroot=/dev/sda1 ro
module (hd0,1)/boot/initrd.img-2.6.32-5-xen-amd64

grub1 menu entry is:
title Xen 4.0-amd64 / Debian GNU/Linux, kernel 2.6.32-5-xen-amd64
root (hd0,0)
kernel /boot/xen-4.0-amd64.gz iommu=off
module /boot/vmlinuz-2.6.32-5-xen-amd64 root=/dev/sda1 ro console=tty0
module /boot/initrd.img-2.6.32-5-xen-amd64

What's wrong in my configuration?

2010/9/22 Ilya Kozlov <unicast.ru@gmail.com>
Black screen came up after the xen begins loading, and after "loading dom0" server goes reboot. This issue was solved by adding "iommu=off", but there was another described in first letter :-(

2010/9/21 Mike Viau <viaum@xxxxxxxxxxxxxxx>

> On Tue, 21 Sep 2010 20:45:22 +0400 <unicast.ru@gmail.com> wrote:
> I added option "iommu=off", becouse without it system show black screen
> and reboots.

Does this black screen come up right after the kernel begins loading or just before the X windows system starts, like gdm3 in case of Debian systems running the Gnome DE.

On my system the black screen issue was resolved by adding "nomodeset" instead of "iommu=off" (but I do not recall the system rebooting).

Anyways, I hope that help!


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WBR, Kozlov Ilya AKA unicast AKA Lin

WBR, Kozlov Ilya AKA unicast AKA Lin

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