Hi All, We (Fedora) received a bug-report about rendering issues on BYT and IVB caused by the i915 clear-residuals work which landed in 5.10.y :
The Fedora bug: https://bugzilla.redhat.com/show_bug.cgi?id=1959581 Points to these i915 bugs: https://gitlab.freedesktop.org/drm/intel/-/issues/3071 https://gitlab.freedesktop.org/drm/intel/-/issues/3081#note_890606 With the second link containing a possible fix which looks promising if someone can take a look at this, then that would be great: diff --git a/drivers/gpu/drm/i915/gt/gen7_renderclear.c b/drivers/gpu/drm/i915/gt/gen7_renderclear.c index de575fdb0..054a0f5b8 100644 --- a/drivers/gpu/drm/i915/gt/gen7_renderclear.c +++ b/drivers/gpu/drm/i915/gt/gen7_renderclear.c @@ -397,7 +397,7 @@ static void emit_batch(struct i915_vma * const vma, gen7_emit_pipeline_invalidate(&cmds); batch_add(&cmds, MI_LOAD_REGISTER_IMM(2)); batch_add(&cmds, i915_mmio_reg_offset(CACHE_MODE_0_GEN7)); - batch_add(&cmds, 0xffff0000); + batch_add(&cmds, 0xfffb0000); batch_add(&cmds, i915_mmio_reg_offset(CACHE_MODE_1)); batch_add(&cmds, 0xffff0000 | PIXEL_SUBSPAN_COLLECT_OPT_DISABLE); gen7_emit_pipeline_invalidate(&cmds); Note the: https://gitlab.freedesktop.org/drm/intel/-/issues/3081#note_890606 Link contains details about the what and why of this change. Regards, Hans _______________________________________________ Intel-gfx mailing list Intel-gfx@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/intel-gfx
