Hi,

I have solved the problem. Xen 4.1.x is incompatible with the onboard 
graphics of Intel DQ45CB motherboard. I have switched the graphics 
adapter to NVIDIA 8400 GS PCI Express x16 and the combination of Xen 
4.1.3-rc1-pre, kernel 3.3.0-rc7, and NVIDIA 8400 GS works well (Xen 
4.1.x is compatible with NVIDIA 8400 GS graphics).

I have also compiled the *latest* linux kernels 3.x.x for Ubuntu 11.10 
Final Release for you to use. You may download the *latest* linux 
kernels from the following links:

(1) linux-image-3.3.0-rc7-xen-teo.en.ming-sgp_14.mar.2012_amd64.deb

Download Link: http://www.mediafire.com/?kn505tufic974zj

(2) linux-headers-3.3.0-rc7-xen-teo.en.ming-sgp_14.mar.2012_amd64.deb

Download Link: http://www.mediafire.com/?cj1a1k82v516jp0

(3) linux-image-3.2.11-xen-teo.en.ming-sgp_15.mar.2012_amd64.deb

Download Link: http://www.mediafire.com/?mkh4rd6tobit35b

(4) linux-headers-3.2.11-xen-teo.en.ming-sgp_15.mar.2012_amd64.deb

Download link: http://www.mediafire.com/?xzxk5sbaujbnkkg


Yours sincerely,

Teo En Ming (Zhang Enming)




On 14/03/2012 23:39, Teo En Ming (Zhang Enming) wrote:
> Dear All,
>
> I have just compiled and installed Xen 4.1.3-rc1-pre and the latest 
> Linux kernel 3.3.0-rc7 in Ubuntu 11.10 Final Release. I am able to 
> login to my Desktop Environment/GUI when Linux 3.3.0-rc7 is *enabled* 
> and Xen 4.1.3-rc1-pre is *disabled*. However, when Linux 3.3.0-rc7 and 
> Xen 4.1.3-rc1-pre are both enabled, I am unable to start the default 
> desktop environment/GUI. The menu bar and status bar in Unity won't 
> show up. Although I cannot login via the GUI, I can still login 
> through the text console/terminal. I am able to see that Xen is 
> running properly by executing the command "sudo xm list". "xm list" 
> shows that Domain 0 is running properly. It's just that the 
> Desktop/GUI won't start up.
>
> The errors which I think are the most important are reproduced below:
>
> [   15.837793] [drm] Initialized drm 1.1.0 20060810
> [   16.494498] [drm] MTRR allocation failed.  Graphics performance may 
> suffer.
> [   16.495791] [drm] Supports vblank timestamp caching Rev 1 
> (10.10.2010).
> [   16.495794] [drm] Driver supports precise vblank timestamp query.
> [   16.703559] fbcon: inteldrmfb (fb0) is primary device
> [   16.853416] fb0: inteldrmfb frame buffer device
> [   16.853419] drm: registered panic notifier
> [   16.853720] [drm] Initialized i915 1.6.0 20080730 for 0000:00:02.0 
> on minor 0
> [   31.756069] [drm:i915_hangcheck_elapsed] *ERROR* Hangcheck timer 
> elapsed... GPU hung
> [   31.756075] [drm] capturing error event; look for more information 
> in /debug/dri/0/i915_error_state
> [   31.763086] [drm:i915_wait_request] *ERROR* i915_wait_request 
> returns -11 (awaiting 2 at 0, next 3)
>
> [   16.286504] i915 0000:00:02.0: setting latency timer to 64
> [   16.853720] [drm] Initialized i915 1.6.0 20080730 for 0000:00:02.0 
> on minor 0
> [   31.756069] [drm:i915_hangcheck_elapsed] *ERROR* Hangcheck timer 
> elapsed... GPU hung
> [   31.756075] [drm] capturing error event; look for more information 
> in /debug/dri/0/i915_error_state
> [   31.763086] [drm:i915_wait_request] *ERROR* i915_wait_request 
> returns -11 (awaiting 2 at 0, next 3)
>
> http://ubuntuforums.org/showthread.php?t=1940792
>
> http://ubuntuforums.org/showthread.php?t=1940796
>
> I have attached the relevant configuration files and error logs.
>
> Thank you very much.
>
> Yours sincerely,
>
> Teo En Ming (Zhang Enming)