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Re: [Xen-users] [Xen-devel] Desktop Environment/GUI Cannot Start After I Have Installed Xen 4.1.3-rc1-pre and Linux Kernel 3.3.0-rc7

On 15.03.2012 09:29, Konrad Rzeszutek Wilk wrote:
> On Thu, Mar 15, 2012 at 2:07 AM, Teo En Ming (Zhang Enming)
> <singapore.mr.teo.en.ming@xxxxxxxxx> wrote:
>> 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).
> <sigh> No. The reason it is not working is b/c you have this in your config:
> # CONFIG_INTEL_IOMMU is not set
> If you unset that (so CONFIG_INTEL_IOMMU=y) it will work.
> Stefan, can this option be set in the Ubuntu kernels?

Hi Konrad,

this is actually different in the current (for 12.04) kernel configurations:


The reason it is not on by default is that some machines showed issues


Btw, this is talking about a 3.3.0-rc7 kernel, which is either taken from the
mainline builds or even self-compiled. 11.10 came with 3.0 and even 12.04 is 3.2


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