RKL: igt@kms_frontbuffer_tracking@fbc-1p-offscren-pri-shrfb-draw-.* - dmesg-fail - *ERROR* CPU pipe A FIFO underrun
https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_8925/re-rkl-1/igt@kms_frontbuffer_tracking@fbc-1p-offscren-pri-shrfb-draw-blt.html#dmesg-warnings688
<7> [740.583802] i915 0000:00:02.0: [drm:intel_dp_start_link_train [i915]] clock recovery OK
<7> [740.583832] i915 0000:00:02.0: [drm:intel_dp_program_link_training_pattern [i915]] Using DP training pattern TPS3
<7> [740.585114] i915 0000:00:02.0: [drm:intel_dp_start_link_train [i915]] Channel EQ done. DP Training successful
<7> [740.585311] i915 0000:00:02.0: [drm:intel_dp_start_link_train [i915]] [CONNECTOR:167:eDP-1] Link Training Passed at Link Rate = 324000, Lane count = 2
<7> [740.586548] i915 0000:00:02.0: [drm:gen8_de_irq_handler [i915]] hotplug event received, stat 0x00010000, dig 0x00000889, pins 0x00000010, long 0x00000000
<7> [740.586587] i915 0000:00:02.0: [drm:intel_hpd_irq_handler [i915]] digital hpd on [ENCODER:166:DDI A] - short
<7> [740.586717] i915 0000:00:02.0: [drm:intel_dp_hpd_pulse [i915]] got hpd irq on [ENCODER:166:DDI A] - short
<7> [740.587285] i915 0000:00:02.0: [drm:intel_dp_read_dpcd [i915]] DPCD: 14 00 c2 41 00 00 01 c0 02 00 00 00 00 0b 00
<3> [740.597796] i915 0000:00:02.0: [drm] *ERROR* CPU pipe A FIFO underrun
<7> [740.597960] i915 0000:00:02.0: [drm:intel_fbc_underrun_work_fn [i915]] Disabling FBC due to FIFO underrun.
<7> [740.616574] i915 0000:00:02.0: [drm:gen8_de_irq_handler [i915]] hotplug event received, stat 0x00010000, dig 0x00000889, pins 0x00000010, long 0x00000000
<7> [740.616632] i915 0000:00:02.0: [drm:intel_hpd_irq_handler [i915]] digital hpd on [ENCODER:166:DDI A] - short