On Wed, Jan 23, 2019 at 05:02:38PM +0200, Joonas Lahtinen wrote: > We have many reports where just having intel_iommu=on (and using the > system normally, without any virtualization stuff going on) will cause > unexplained GPU hangs. For those users, simply switching to > intel_iommu=igfx_off solves the problems, and the debug often ends > there. If you can reproduce problems on your side, then you can try to enable CONFIG_INTEL_IOMMU_BROKEN_GFX_WA to force the GFX devices into the identity mapping. We can also add a boot-parameter and workarounds if it turns out that this is sufficient to make the GFX devices work with IOMMU enabled. Regards, Joerg _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/dri-devel
