[fedora-virt] [Fedora-xen] Fedora 17 testing as Xen VM / Xorg issue

[Konrad Rzeszutek Wilk]

On Mon, May 28, 2012 at 10:45:37PM +0300, Pasi Kärkkäinen wrote:
> Hello,
> 
> I just did some installs with F17 RC4 (the GA version) as a Xen VM.
> 
> Xen host/dom0: RHEL 5.8 x86_64 with the included Xen rpms.
> 
> Tested F17 RC4 VMs:
> 
> 	- 32bit F17 PV domU: graphical GUI install works OK using the Xen vfb/pvfb
> 	  but Xorg fails to start during normal boot after installation.
> 
> 	- 64bit F17 PV domU: graphical GUI install works OK using the Xen vfb/pvfb 
> 	  but Xorg fails to start during normal boot after installation.
> 
> 	- 32bit F17 PVHVM guest: X fails to start so VNC install must be used, install works OK thru VNC. 
> 	  Xorg fails to start during normal boot after installation.
> 
> 	- 64bit F17 PVHVM guest: X fails to start so VNC install must be used, install works OK thru VNC. 
> 	  Xorg fails to start during normal boot after installation.
> 
> (PVHVM == HVM fully virtualized guest with optimized Xen PV drivers.
> Optimized Xen PVHVM drivers are nowadays included and used as a default with 
> recent upstream Linux kernel versions (2.6.36+), so disk/net IO doesn't have to be emulated by Xen Qemu-dm.)
> 
> I wonder if the problem with X failing to start is related to:
> http://fedoraproject.org/wiki/Features/DRI2DriversOnly
> 
> Xen HVM guests have Qemu-dm emulated Cirrus VGA adapter (or stdvga) visible to the VM.. 
> which doesn't have DRM/KMS drivers, and I think it's the same for xen-fbfront. 
> I think I saw Cirrus (Qemu) DRM/KMS driver being worked on dri-devel mailinglist.. 

You are hitting https://bugzilla.redhat.com/show_bug.cgi?id=810040 I think.

> 
> Any ideas/comments? 
> 
> -- Pasi
> 
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