Hi Peter, There is already a patch to revert that broken patch.
https://patchwork.kernel.org/patch/10513017/ Best regards, Lu Baolu On 07/15/2018 04:29 PM, peter.ch...@data61.csiro.au wrote: > Hi Lu, > In recent kernels, i915 graphics with intel_iommu=on has been > giving me a blank screen. > > git bisect points at your patch ab96746aaa34 > "iommu/vt-d: Clean up pasid quirk for pre-production devices" > > Either one of the pre-production devices made it into my Dell > laptop, or there's something else wrong with the patch. > > Reverting that patch gives me text console and X11 graphics; > keeping it in yields a blank screen on boot. > > My laptop is a Dell Inc. Precision 7710/0PMJX2, BIOS 1.15.4 12/08/2017 > CPU is Intel(R) Core(TM) i7-6920HQ CPU @ 2.90GHz > (family: 0x6, model: 0x5e, stepping: 0x3) > > Peter C _______________________________________________ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu
