./kms_flip --run-subtest basic-flip-vs-wf_vblank
IGT-Version: 1.19-g6fcc8e8 (x86_64) (Linux: 4.12.0-24346e8-mipi-configs-g24346e8-dirty x86_64)
Using monotonic timestamps
Beginning basic-flip-vs-wf_vblank on pipe A, connector DSI-1
  1920x1200 60 1920 2000 2080 2160 1200 1204 1208 1212 0xa 0x8 157100
Expected frametime: 16664us; measured 16534.2us +- 42.120us accuracy 0.76%
(kms_flip:5759) CRITICAL: Test assertion failure function calibrate_ts, file kms_flip.c:1227:
(kms_flip:5759) CRITICAL: Failed assertion: 3 * stddev / mean < 0.005
Stack trace:
  #0 [__igt_fail_assert+0x101]
  #1 [run_test_on_crtc_set.constprop.14+0x1e49]
  #2 [run_test+0x26a]
  #3 [main+0x3c1]
  #4 [__libc_start_main+0xf1]
  #5 [_start+0x29]
  #6 [<unknown>+0x29]
Subtest basic-flip-vs-wf_vblank failed.
**** DEBUG ****
(kms_flip:5759) DEBUG: Test requirement passed: (flags & TEST_HANG) == 0 || !is_wedged(drm_fd)
(kms_flip:5759) DEBUG: Test requirement passed: modes
(kms_flip:5759) INFO: Beginning basic-flip-vs-wf_vblank on pipe A, connector DSI-1
(kms_flip:5759) igt-fb-DEBUG: igt_create_fb_with_bo_size(width=1920, height=1200, format=0x34325258, tiling=0x0, size=0)
(kms_flip:5759) igt-fb-DEBUG: igt_create_fb_with_bo_size(handle=2, pitch=7680)
(kms_flip:5759) igt-fb-DEBUG: igt_create_fb_with_bo_size(width=1920, height=1200, format=0x34325258, tiling=0x0, size=0)
(kms_flip:5759) igt-fb-DEBUG: igt_create_fb_with_bo_size(handle=3, pitch=7680)
(kms_flip:5759) igt-kms-INFO:   1920x1200 60 1920 2000 2080 2160 1200 1204 1208 1212 0xa 0x8 157100
(kms_flip:5759) INFO: Expected frametime: 16664us; measured 16534.2us +- 42.120us accuracy 0.76%
(kms_flip:5759) CRITICAL: Test assertion failure function calibrate_ts, file kms_flip.c:1227:
(kms_flip:5759) CRITICAL: Failed assertion: 3 * stddev / mean < 0.005
****  END  ****
Subtest basic-flip-vs-wf_vblank: FAIL (0.446s)