<html> <head> <base href="https://bugs.freedesktop.org/" /> </head> <body> <div> <a class="bz_bug_link bz_status_REOPENED " title="REOPENED --- - [BYT]igt/many kms_flip subcases randomly fail with *ERROR* failed to train DP, aborting" href="https://bugs.freedesktop.org/show_bug.cgi?id=73037#c34">Comment # 34</a> on <a class="bz_bug_link bz_status_REOPENED " title="REOPENED --- - [BYT]igt/many kms_flip subcases randomly fail with *ERROR* failed to train DP, aborting" href="https://bugs.freedesktop.org/show_bug.cgi?id=73037">bug 73037</a> from <a class="email" href="mailto:huax.lu@intel.com" title="lu hua <huax.lu@intel.com>"> lu hua</a> <pre>It still happens on latest -nightly kernel. run ./kms_flip --run-subtest absolute-wf_vblank-interruptible output: IGT-Version: 1.7-gd0a41b4 (x86_64) (Linux: 3.17.0-rc2_drm-intel-nightly_519a43_20140829+ x86_64) Using monotonic timestamps Beginning absolute-wf_vblank-interruptible on crtc 8, connector 28 1920x1080 60 1920 1966 1996 2080 1080 1082 1086 1112 0xa 0x48 138780 .............................................. absolute-wf_vblank-interruptible on crtc 8, connector 28: PASSED Beginning absolute-wf_vblank-interruptible on crtc 13, connector 28 1920x1080 60 1920 1966 1996 2080 1080 1082 1086 1112 0xa 0x48 138780 .............................................. absolute-wf_vblank-interruptible on crtc 13, connector 28: PASSED Beginning absolute-wf_vblank-interruptible on crtc 8, connector 16 1024x768 60 1024 1048 1184 1344 768 771 777 806 0xa 0x40 65000 .............................................. absolute-wf_vblank-interruptible on crtc 8, connector 16: PASSED Beginning absolute-wf_vblank-interruptible on crtc 13, connector 16 1024x768 60 1024 1048 1184 1344 768 771 777 806 0xa 0x40 65000 .............................................. absolute-wf_vblank-interruptible on crtc 13, connector 16: PASSED Subtest absolute-wf_vblank-interruptible: SUCCESS # dmesg -r|egrep "<[1-3]>"|grep drm <3>[ 235.727747] [drm:intel_dp_start_link_train] *ERROR* failed to enable link training <3>[ 236.630574] [drm:intel_dp_complete_link_train] *ERROR* failed to train DP, aborting <3>[ 236.632712] [drm:intel_pipe_config_compare] *ERROR* mismatch in has_dp_encoder (expected 1, found 0) <3>[ 236.633414] [drm:i9xx_set_fifo_underrun_reporting] *ERROR* pipe B underrun <3>[ 236.633418] [drm:valleyview_pipestat_irq_handler] *ERROR* pipe B underrun <3>[ 261.291479] [drm:intel_dp_start_link_train] *ERROR* failed to enable link training <3>[ 262.176234] [drm:intel_dp_complete_link_train] *ERROR* failed to train DP, aborting <3>[ 263.181448] [drm:intel_pipe_config_compare] *ERROR* mismatch in has_dp_encoder (expected 1, found 0) <3>[ 263.182083] [drm:i9xx_set_fifo_underrun_reporting] *ERROR* pipe A underrun <3>[ 263.182085] [drm:valleyview_pipestat_irq_handler] *ERROR* pipe A underrun</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the QA Contact for the bug.</li> <li>You are on the CC list for the bug.</li> </ul> </body> </html>