[Bug 101144] New: [BAT][SKL] *ERROR* failed to enable link training
bugzilla-daemon at freedesktop.org
bugzilla-daemon at freedesktop.org
Mon May 22 09:13:55 UTC 2017
https://bugs.freedesktop.org/show_bug.cgi?id=101144
Bug ID: 101144
Summary: [BAT][SKL] *ERROR* failed to enable link training
Product: DRI
Version: DRI git
Hardware: Other
OS: All
Status: NEW
Severity: normal
Priority: medium
Component: DRM/Intel
Assignee: intel-gfx-bugs at lists.freedesktop.org
Reporter: martin.peres at free.fr
QA Contact: intel-gfx-bugs at lists.freedesktop.org
CC: intel-gfx-bugs at lists.freedesktop.org
The test igt at kms_flip@basic-flip-vs-dpms generated a dmesg error (but still
passed) when running on fi-skl-6700hq on CI_DRM_2640:
[drm:intel_dp_start_link_train [i915]] *ERROR* failed to enable link training
[drm:intel_dp_start_link_train [i915]] Link Training failed at link rate =
270000, lane count = 2
This is possibly related to the following message a little above in the logs
(up to the warning reported by piglit):
[...]
[ 420.613916] [drm:intel_dp_aux_ch [i915]] dp_aux_ch timeout status 0x7d4003ff
[ 420.622421] [drm:intel_dp_aux_ch [i915]] dp_aux_ch timeout status 0x7d4003ff
[ 420.630911] [drm:intel_dp_aux_ch [i915]] dp_aux_ch timeout status 0x7d4003ff
[ 420.630939] [drm:drm_dp_dpcd_access] Too many retries, giving up. First
error: -110
[ 420.634122] [drm:intel_dp_sink_dpms [i915]] failed to enable sink power
state
[...]
[ 421.172326] [drm:intel_dp_aux_ch [i915]] dp_aux_ch timeout status 0x7d4003ff
[ 421.180857] [drm:intel_dp_aux_ch [i915]] dp_aux_ch timeout status 0x7d4003ff
[ 421.180869] [drm:drm_dp_dpcd_access] Too many retries, giving up. First
error: -110
[ 421.180893] [drm:intel_dp_set_signal_levels [i915]] Using signal levels
00000000
[ 421.180911] [drm:intel_dp_set_signal_levels [i915]] Using vswing level 0
[ 421.180971] [drm:intel_dp_set_signal_levels [i915]] Using pre-emphasis level
0
[ 421.180991] [drm:intel_dp_program_link_training_pattern [i915]] Using DP
training pattern TPS1
[...]
[ 421.412348] [drm:intel_dp_aux_ch [i915]] dp_aux_ch timeout status 0x7d4003ff
[ 421.420917] [drm:intel_dp_aux_ch [i915]] dp_aux_ch timeout status 0x7d4003ff
[ 421.429499] [drm:intel_dp_aux_ch [i915]] dp_aux_ch timeout status 0x7d4003ff
[ 421.438068] [drm:intel_dp_aux_ch [i915]] dp_aux_ch timeout status 0x7d4003ff
[ 421.446637] [drm:intel_dp_aux_ch [i915]] dp_aux_ch timeout status 0x7d4003ff
[ 421.455206] [drm:intel_dp_aux_ch [i915]] dp_aux_ch timeout status 0x7d4003ff
[ 421.455218] [drm:drm_dp_dpcd_access] Too many retries, giving up. First
error: -110
[ 421.455240] [drm:intel_dp_start_link_train [i915]] *ERROR* failed to enable
link training
[ 421.455261] [drm:intel_dp_start_link_train [i915]] Link Training failed at
link rate = 270000, lane count = 2
[ 421.455353] [drm:intel_dp_modeset_retry_work_fn [i915]] [CONNECTOR:48:eDP-1]
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