[Bug 78162] [i7-4600U i915]: constant screen flickering after KMS which correlates with CPU load

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=78162

Mika Kuoppala <mika.kuoppala at intel.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |NEEDINFO

--- Comment #18 from Mika Kuoppala <mika.kuoppala at intel.com> ---
I am thinking that if we hit too close to the boundary in your case.

Could you give this a spin:

diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c
index 34ed143..6310543 100644
--- a/drivers/gpu/drm/i915/intel_dp.c
+++ b/drivers/gpu/drm/i915/intel_dp.c
@@ -819,7 +819,7 @@ intel_dp_compute_config(struct intel_encoder *encoder,
                                link_avail = intel_dp_max_data_rate(link_clock,
                                                                   
lane_count);

-                               if (mode_rate <= link_avail) {
+                               if (mode_rate * 11 <= link_avail * 10) {
                                        goto found;
                                }
                        }

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