Xen users - Nov 2011 - Xorg in Dom0 under Xen 4.1.2 doesn't start

Hi *,

     I have found some posts in various fora, but I couldn''t find one
with a solution, so I post this problem (again?).

Trying to run Xorg on Linux 3.1.1 Dom0 kernel under Xen 4.1.2 (built as
http://slackbuilds.org/repository/13.37/system/xen/) on Slackware 64-13.37.
(The next step should be a HVM guest driven through a vnc window from Dom0).

On the same kernel booted natively, all works fine; when booting under 
Xen, Xorg does not start.
The (relevant?) error messages that I find in Xorg.0.log are

(WW) System lacks support for changing MTRRs
(EE) VESA(0): V_BIOS address 0x0 out of range

(the full diff of the respective Xorg.0.log-s is at 
http://camelot.lf2.cuni.cz/vejvalka/posts/xlog-diff)

What is it that I am missing ?
Thanks for any hint,

Jan

I had this same problem and it looks to be an issue with the driver your
xorg server is loading.

modify the file /etc/X11/xorg.conf

Section "Device"
    Driver    "vesa"

to be:

Section "Device"
    Driver    "radeon_tp"

I have a Radeion HD 3450 graphics card.

The list of drivers you have can be found under
/usr/lib64/xorg/modules/drivers.
Then restart the xorg service:
startx

I found that I actually had to restart the service a few times, but after
the second "startx" command call my graphics started working.

Jason


_______________________________________________
Xen-users mailing list
Xen-users@lists.xensource.com
http://lists.xensource.com/xen-users