[Bug 88977] [BSW]igt/kms_cursor_crc/cursor-size-change sporadically causes *ERROR* CPU pipe B FIFO underrun

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=88977

--- Comment #12 from Elio <elio.martinez.monroy at intel.com> ---
The problem persists on BYT with 
kms_render at gpu-blit

Latest graphic stack configuration
Ubuntu 15.04 
Kernel: 4.4.0-rc1-nightly+

Stdout    
IGT-Version: 1.12-gb68a642 (x86_64) (Linux: 4.4.0-rc1-nightly+ x86_64)
Stack trace:
  #0 [__igt_fail_assert+0x101]
  #1 [__gem_mmap__gtt+0x0]
  #2 [gem_quiescent_gpu+0xa3]
  #3 [drm_open_driver+0x67]
  #4 [drm_open_driver_master+0x6]
  #5 [__real_main221+0x117]
  #6 [main+0x23]
  #7 [__libc_start_main+0xf0]
  #8 [_start+0x29]
  #9 [<unknown>+0x29]
Subtest gpu-blit: FAIL
Stderr    
Test assertion failure function gem_execbuf, file ioctl_wrappers.c:445:
Failed assertion: result == 0
Last errno: 5, Input/output error
Test kms_render failed.
**** DEBUG ****
(kms_render:5218) igt-core-DEBUG: Test requirement passed:
!igt_run_in_simulation()
Test requirement passed: fd >= 0
Test assertion failure function gem_execbuf, file ioctl_wrappers.c:445:
Failed assertion: result == 0
Last errno: 5, Input/output error
****  END  ****

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