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Re: [Xen-users] Xen fails with garbled boot screen - incompatible hardwa

To: Ben Bradley <ben.bradley@xxxxxxxxxxxxxxxx>
Subject: Re: [Xen-users] Xen fails with garbled boot screen - incompatible hardware?
From: Pasi Kärkkäinen <pasik@xxxxxx>
Date: Fri, 4 Dec 2009 09:18:42 +0200
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On Thu, Dec 03, 2009 at 11:46:39AM -0000, Ben Bradley wrote:
> Hi everyone
> Anyone got any ideas on what might be happening here?
> Anything else I should try to debug this?

So you tried updating the Xen hypervisor, but used the same dom0 kernel?
I guess the problem is in dom0 Linux/RHEL5 kernel then..

Dunno if any of the acpi/apic related options for dom0 vmlinuz would

Did you search Redhat bugzilla?

-- Pasi

> Cheers, Ben
> -----Original Message-----
> From: xen-users-bounces@xxxxxxxxxxxxxxxxxxx
> [mailto:xen-users-bounces@xxxxxxxxxxxxxxxxxxx] On Behalf Of Ben Bradley
> Sent: 25 November 2009 12:49
> To: xen-users@xxxxxxxxxxxxxxxxxxx
> Subject: [Xen-users] Xen fails with garbled boot screen -
> incompatiblehardware?
> Hi everyone
> Ok this is really strange. I've been messing around with Xen for the
> past few weeks on a 32bit test machine and CentOS 5.4 and it's been
> working fine.
> At the weekend I went into the office to install Xen on our server but I
> had a major problem.
> The server is a home-build with a Tyan s5211 motherboard with an Intel
> i3210w chipset CentOS 5.4 64bit installed and rebooted several times
> without any issues. This server also has a 3Ware 9690SA-8i RAID card in
> it as well which has never caused any problems. Ubuntu 8.04 has been
> running on this machine for the last 18 months or so without any
> problems.
> I did a fresh install of CentOS 5.4 64bit then installed Xen using the
> basic "yum install kernel-xen xen" method and made the changes to grub
> to try booting Xen.
> The boot into Xen started ok but just after the section "waiting for
> driver initialization" the screen became garbled with all the boot
> messages and coloured blocks scrolling up the screen at mega-speed so I
> had no chance of reading the output on the screen.
> After a quick google I found someone running Debian/Xen on the same
> board with the same problem...
> http://lists.alioth.debian.org/pipermail/pkg-xen-devel/2009-August/00243
> 8.html
> I tried installed the latest Xen (3.4.1) from the gitco.de repos and the
> same thing happened.
> This leads me to think it might be a motherboard incompatibility... I
> really hope not as I'd love to get Xen working on this machine!
> I connected to the serial console port and watched what was happening
> and changed loglvl=all
> Here's the serial console output:
> http://www.highbeeches.plus.com/xenconsoleoutput.txt
> I tried checking for when in the console output that the garbled screen
> started and it was either the "kjournald starting" line or after that.
> Anything above that line, the monitor output was fine.
> Here's my menu.lst for reference
> I changed default=0, added those console options to get the serial
> connection going and added loglvl=all to get more info when I started to
> have problems.
> # grub.conf generated by anaconda
> #
> # Note that you do not have to rerun grub after making changes to this
> file
> # NOTICE:  You have a /boot partition.  This means that
> #          all kernel and initrd paths are relative to /boot/, eg.
> #          root (hd0,0)
> #          kernel /vmlinuz-version ro root=/dev/sda3
> #          initrd /initrd-version.img
> #boot=/dev/sda
> default=0
> timeout=5
> splashimage=(hd0,0)/grub/splash.xpm.gz
> hiddenmenu
> title CentOS (2.6.18-164.6.1.el5xen)
>         root (hd0,0)
>         kernel /xen.gz-2.6.18-164.6.1.el5 com1=115200,8n1 sync_console
> loglvl=all
>         module /vmlinuz-2.6.18-164.6.1.el5xen ro root=LABEL=/
> console=ttyS0 console=tty
>         module /initrd-2.6.18-164.6.1.el5xen.img
> title CentOS (2.6.18-164.6.1.el5)
>         root (hd0,0)
>         kernel /vmlinuz-2.6.18-164.6.1.el5 ro root=LABEL=/
>         initrd /initrd-2.6.18-164.6.1.el5.img
> title CentOS (2.6.18-164.el5)
>         root (hd0,0)
>         kernel /vmlinuz-2.6.18-164.el5 ro root=LABEL=/
>         initrd /initrd-2.6.18-164.el5.img
> Anyone got any ideas of what could be going on here?
> Or anything else to try and get Xen to boot?
> I'm happy to provide any further debug info I can, but I'm new to Xen so
> not sure where to dig for further info
> I'd really like to get Xen up and running on this machine.
> Thanks, B
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