From: Stefan Bader <stefan.bader@canonical.com>
To: konrad@darnok.org
Cc: xen-users@lists.xen.org,
"Teo En Ming (Zhang Enming)" <singapore.mr.teo.en.ming@gmail.com>,
xen-devel@lists.xen.org
Subject: Re: Desktop Environment/GUI Cannot Start After I Have Installed Xen 4.1.3-rc1-pre and Linux Kernel 3.3.0-rc7
Date: Thu, 15 Mar 2012 09:54:16 +0100 [thread overview]
Message-ID: <4F61AE38.6060708@canonical.com> (raw)
In-Reply-To: <CAPbh3rv6FJ9HhRLdOLXsh4fgCWLmmHs_T9xjmauvKdgdx-CM1Q@mail.gmail.com>
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@gmail.com> 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:
CONFIG_INTEL_IOMMU=y
# CONFIG_INTEL_IOMMU_DEFAULT_ON is not set
The reason it is not on by default is that some machines showed issues
https://bugs.launchpad.net/ubuntu/+source/debian-installer/+bug/907377
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
only.
-Stefan
next prev parent reply other threads:[~2012-03-15 8:54 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-03-14 15:39 Desktop Environment/GUI Cannot Start After I Have Installed Xen 4.1.3-rc1-pre and Linux Kernel 3.3.0-rc7 Teo En Ming (Zhang Enming)
2012-03-15 6:07 ` Teo En Ming (Zhang Enming)
2012-03-15 8:29 ` Konrad Rzeszutek Wilk
2012-03-15 8:54 ` Stefan Bader [this message]
2012-03-15 17:29 ` Ben Guthro
2012-03-15 17:57 ` Teo En Ming (Zhang Enming)
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