[Bug 84890] [BYT/BSW]igt/drv_debugfs_reader sporadically causes *ERROR* Panel is unable to calculate CRC after 6 vblanks

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=84890

lu hua <huax.lu at intel.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|[BYT]igt/drv_debugfs_reader |[BYT/BSW]igt/drv_debugfs_re
                   |sporadically causes *ERROR* |ader sporadically causes
                   |Panel is unable to          |*ERROR* Panel is unable to
                   |calculate CRC after 6       |calculate CRC after 6
                   |vblanks                     |vblanks

--- Comment #1 from lu hua <huax.lu at intel.com> ---
I reproduce this error on BSW.  It happens 1 in 6 runs.
[root at x-bsw01 tests]# ./drv_debugfs_reader
[root at x-bsw01 tests]# dmesg -r|egrep "<[1-4]>"|grep drm
<3>[  121.944420] [drm:intel_dp_sink_crc [i915]] *ERROR* Panel is unable to
calculate CRC after 6 vblanks

[  109.270270] [drm:edp_panel_vdd_on] Turning eDP port C VDD on
[  109.270285] [drm:edp_panel_vdd_on] PP_STATUS: 0x80000008 PP_CONTROL:
0xabcd000f
[  112.286421] [drm:edp_panel_vdd_off_sync] Turning eDP port C VDD off
[  112.286436] [drm:edp_panel_vdd_off_sync] PP_STATUS: 0x80000008 PP_CONTROL:
0xabcd0007
[  121.655828] [drm:edp_panel_vdd_on] Turning eDP port C VDD on
[  121.655842] [drm:edp_panel_vdd_on] PP_STATUS: 0x80000008 PP_CONTROL:
0xabcd000f
[  121.944420] [drm:intel_dp_sink_crc [i915]] *ERROR* Panel is unable to
calculate CRC after 6 vblanks
[  124.670970] [drm:edp_panel_vdd_off_sync] Turning eDP port C VDD off
[  124.670984] [drm:edp_panel_vdd_off_sync] PP_STATUS: 0x80000008 PP_CONTROL:
0xabcd0007
[  125.392085] [drm:edp_panel_vdd_on] Turning eDP port C VDD on
[  125.392100] [drm:edp_panel_vdd_on] PP_STATUS: 0x80000008 PP_CONTROL:
0xabcd000f
[  128.415147] [drm:edp_panel_vdd_off_sync] Turning eDP port C VDD off
[  128.415161] [drm:edp_panel_vdd_off_sync] PP_STATUS: 0x80000008 PP_CONTROL:
0xabcd0007

-- 
You are receiving this mail because:
You are the QA Contact for the bug.
You are on the CC list for the bug.
You are the assignee for the bug.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.freedesktop.org/archives/intel-gfx-bugs/attachments/20141112/98ca664f/attachment.html>