Yes, it's the i915-backports that cause the problem: - diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c index 49de476..277a802 100644 - diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h index a19ec06..3ce9ba3 100644
After reversing *both* (else the kernel won't compile) the flicker is gone, no more messages in dmesg. All else OK so far. Please do yourself and us users with older Intel CPU/GPU a favour and don't backport i915-stuff anymore for 4.9! It's risky and probably needless: until 4.9.60/61 everything was absolutely fine. Keep in mind that 4.4 is also unusable with those processors b/c of i915-problems (as you probably know). And I have a premonition now concerning 4.14. ;) So long! Rainer Fiebig -- The truth always turns out to be simpler than you thought. Richard Feynman