igt@kms_flip@.* - fail - Failed assertion: !retried && igt_hotplug_detected(mon, 3)

https://intel-gfx-ci.01.org/tree/drm-tip/IGT_5652/shard-skl8/igt@kms_flip@plain-flip-ts-check-interruptible@c-edp1.html

kms_flip:1206) DEBUG: flip ts/seq: last 363.041687/2477, current 363.075043/2479: elapsed=33350.0us expected=33342.6us +- 166.7us, error 0.0%
(kms_flip:1206) DEBUG: unexpected flip seq 2479, expected 2478
(kms_flip:1206) DEBUG: expected 600, counted 458, encoder type 2
(kms_flip:1206) DEBUG: dropped frames, expected 600, counted 458, encoder type 2
(kms_flip:1206) CRITICAL: Test assertion failure function __run_test_on_crtc_set, file ../tests/kms_flip.c:1329:
(kms_flip:1206) CRITICAL: Failed assertion: !retried && igt_hotplug_detected(mon, 3)
(kms_flip:1206) CRITICAL: Last errno: 4, Interrupted system call
(kms_flip:1206) igt_core-INFO: Stack trace:
(kms_flip:1206) igt_core-INFO:   #0 ../lib/igt_core.c:1712 __igt_fail_assert()
(kms_flip:1206) igt_core-INFO:   #1 ../tests/kms_flip.c:1294 run_test_on_crtc_set.constprop.13()
(kms_flip:1206) igt_core-INFO:   #2 ../tests/kms_flip.c:1429 run_test()
(kms_flip:1206) igt_core-INFO:   #3 ../tests/kms_flip.c:1675 __real_main1570()
(kms_flip:1206) igt_core-INFO:   #4 ../tests/kms_flip.c:1570 main()
(kms_flip:1206) igt_core-INFO:   #5 ../csu/libc-start.c:344 __libc_start_main()
(kms_flip:1206) igt_core-INFO:   #6 [_start+0x2a]