I looked up the "325f8e18c8ac drm/i915/ringbuffer: Delay after EMIT_INVALIDATE for gen4/gen5" commit and it looks like the Tails distro had the same issue with that commit https://redmine.tails.boum.org/code/issues/16224
I looked up the "325f8e18c8ac drm/i915/ ringbuffer: Delay after EMIT_INVALIDATE for gen4/gen5" commit and it looks like the Tails distro had the same issue with that commit https:/ /redmine. tails.boum. org/code/ issues/ 16224