I'd look in the logs for Xorg failures.
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On Tue, 4 Mar 2014, Pasi Kärkkäinen wrote:
Date: Tue, 4 Mar 2014 21:45:01 +0200
From: Pasi Kärkkäinen <pasik@xxxxxx>
Reply-To: Discussion about the virtualization on CentOS
<centos-virt@xxxxxxxxxx>
To: Discussion about the virtualization on CentOS <centos-virt@xxxxxxxxxx>
Subject: Re: Xen4CentOS installation strangeness
On Tue, Mar 04, 2014 at 02:50:40PM +0200, Peter Peltonen wrote:
Hi,
I have a server with Supermicro X7DVL-3 (P9) motherboard, 16G ECC RAM and
LSI SAS 1068e RAID controller. I installed CentOS 6.5 64bit on the machine
without any problems, but after following the Xen setup steps at
[1]http://wiki.centos.org/HowTos/Xen/Xen4QuickStart
which installed me the kernel 3.10.32-11.el6.centos.alt.x86_64, I
encountered a problem: After "Starting certmonger [OK]" the screen went
black and the system became unresponsive: keyboard was not working
(NumLock did not respond) and SSH was not responding either. After first
lockup I increased dom0 max mem to 2G, but rebooting after that produced
the same result. The strange thing is, that after a third reboot
everything worked ok: screen went black for a moment after "Staring
certmonger [OK]" but after that the graphical login screen appeared and I
could use the system normally. The fourth reboot went ok as well.
Any ideas what could cause this kind of behaviour?
No idea really.. but what you should do is to enable/configure a serial console,
probably by using the IPMI SOL, so you can capture and log all the Xen and dom0 kernel
boot messages..
So we can hopefully *see* what the issue is, and not have to guess :)
-- Pasi
Regards,
Peter
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