Bjørn Mork <bj...@mork.no> writes: > Given this, there is an extremely suspicious commit added in v4.18.20: > > 06e562e7f515 ("drm/i915/ringbuffer: Delay after EMIT_INVALIDATE for > gen4/gen5") > > I do have an old laptop with an affected chipset generation, and > verified that it had the same symptoms. But never got the time to > actually test any further. Still, I do think that there is good reason > to simply try a revert of that commit.
FWIW, I have now verified that reverting commit 06e562e7f515 ("drm/i915/ringbuffer: Delay after EMIT_INVALIDATE for gen4/gen5") fixes this issue for me. Bjørn