igt@kms_fbcon_fbt@* - fail - Test assertion failure function subtest, Failed assertion: feature->wait_until_update(drm)

http://gfx-ci.igk.intel.com/cibuglog-ng/testresult/1745796582?query_key=9a700d9c6aa3e482f1ee2dbc8d4a037fa5e6cd2d

Starting subtest: fbc-suspend
(kms_fbcon_fbt:2360) CRITICAL: Test assertion failure function subtest, file ../../../usr/src/igt-gpu-tools/tests/intel/kms_fbcon_fbt.c:408:
(kms_fbcon_fbt:2360) CRITICAL: Failed assertion: feature->wait_until_update(drm)
(kms_fbcon_fbt:2360) CRITICAL: Last errno: 9, Bad file descriptor
Subtest fbc-suspend failed.