On Thu, May 31, 2012 at 8:04 PM, Josh Boyer <jwboyer@xxxxxxxxx> wrote: > On Thu, May 31, 2012 at 1:02 PM, drago01 <drago01@xxxxxxxxx> wrote: >> On Wed, May 30, 2012 at 10:32 PM, Reindl Harald <h.reindl@xxxxxxxxxxxxx> wrote: >>> >>> >>> Am 30.05.2012 10:52, schrieb drago01: >>>> On Wed, May 30, 2012 at 2:36 AM, Jared K. Smith >>>> <jsmith@xxxxxxxxxxxxxxxxx> wrote: >>>>> On Tue, May 29, 2012 at 5:29 PM, Reindl Harald <h.reindl@xxxxxxxxxxxxx> wrote: >>>>>> 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. > > You're aware that doesn't actually do anything in Fedora kernels, > right? We've been carrying a patch called > linux-2.6-intel-iommu-igfx.patch for quite some time that removes the > igfx_off variable and replaces it with an igfx_on variable and defaults > to having the DMAR disabled without igfx_on being specified. In fact: > > From: drago01 <drago01@xxxxxxxxx> > Date: Wed, 26 Oct 2011 13:37:27 -0400 > Subject: [PATCH] Default to igfx_off Oops ... has been a while ;) -- devel mailing list devel@xxxxxxxxxxxxxxxxxxxxxxx https://admin.fedoraproject.org/mailman/listinfo/devel
