root@HSW2:/opt/X11R7/src/intel-gpu-tools/tests# ./prime_vgem --r basic-fence-flip
IGT-Version: 1.16-gf565b6c (x86_64) (Linux: 4.8.0-rc5-nightly+ x86_64)
(prime_vgem:1869) CRITICAL: Test assertion failure function flip_to_vgem, file prime_vgem.c:668:
(prime_vgem:1869) CRITICAL: Failed assertion: poll(&pfd, 1, 0) == 1
(prime_vgem:1869) CRITICAL: error: 0 != 1
Stack trace:
  #0 [__igt_fail_assert+0xf1]
  #1 [flip_to_vgem+0x13a]
  #2 [test_flip+0x47d]
  #3 [__real_main731+0x1725]
  #4 [main+0x29]
  #5 [__libc_start_main+0xf0]
  #6 [_start+0x29]
  #7 [<unknown>+0x29]
Subtest basic-fence-flip failed.
**** DEBUG ****
(prime_vgem:1869) ioctl-wrappers-DEBUG: Test requirement passed: has_modifiers
(prime_vgem:1869) ioctl-wrappers-DEBUG: Test requirement passed: has_modifiers
(prime_vgem:1869) DEBUG: Test requirement passed: (crtc_id = set_fb_on_crtc(i915, 0, &bo[0], fb_id[0]))
(prime_vgem:1869) CRITICAL: Test assertion failure function flip_to_vgem, file prime_vgem.c:668:
(prime_vgem:1869) CRITICAL: Failed assertion: poll(&pfd, 1, 0) == 1
(prime_vgem:1869) CRITICAL: error: 0 != 1
****  END  ****
Subtest basic-fence-flip: FAIL (0.277s)
Test requirement not met in function __real_main731, file prime_vgem.c:827:
Test requirement: vgem_fence_has_flag(vgem, WIP_VGEM_FENCE_NOTIMEOUT)