On Wed, May 30, 2012 at 10:32 PM, Reindl Harald <h.reindl(a)thelounge.net> wrote:
Am 30.05.2012 10:52, schrieb drago01:
> On Wed, May 30, 2012 at 2:36 AM, Jared K. Smith
> <jsmith(a)fedoraproject.org> wrote:
>> On Tue, May 29, 2012 at 5:29 PM, Reindl Harald <h.reindl(a)thelounge.net>
>>> Am 29.05.2012 22:45, schrieb Roberto Ragusa:
>>> i think i have to mention taht VT-d is active in the BIOS and
>>> i was wondering that it was stable because the combination of the
>>> i915 options with VT-d (hardware supported virtualization IO) is
>>> classified to be unstable
>> Yes, that's a possible culprit. I've had massive problems with VT-d
>> enabled on both a Thinkpad T510 and on a Thinkpad X220. I don't
>> pretend to understand what advantages VT-d is *supposed* to give me,
>> but it's the first thing I turn off in the BIOS. In fact, on the
>> T510, I couldn't even get an installation to complete without turning
>> it off.
> You could just do boot with intel_iommu=igfx_off to verify that
sounds not really smart if you are using the integrated graphics
engine as only graphics card which is fast enough for KDE4 3D
effects and all the things you need if you are not a gamer :-)
You misunderstood this completely this won't "turn off your GPU" but
just disables DMAR for it ...
You shouldn't notice any difference neither in KDE nor in games.