Peter Humphrey wrote: > Hello list, > > I was looking through dmesg this morning and found 1231 instances (!) of > this error: > > DMAR: DMAR:[DMA Read] Request device [01:00.0] fault addr f400156000 DMAR: > [fault reason 06] PTE Read access is not set > > This is an Intel i7 box with an NVMe SSD and an AMD/ATI Amethyst XT Radeon > R9 M295X display card. The kernel is gentoo-sources-4.4.39. I've tried > setting intel_iommu=on or =pt as kernel parameter to no effect. I don't want > to set it =off because I've read that it slows the machine dramatically. > > Googling has shown nothing, other than playing with that kernel parameter. > Does anyone here know what the problem is? >
I'm not sure if it applies but I found this: https://forums.gentoo.org/viewtopic-p-7904584.html#7904584 It should scroll down a bit to the post. The last comment seems to have a solution. Hope that helps. If not, maybe someone else has a better idea. Dale :-) :-)
