<html> <head> <base href="https://bugs.freedesktop.org/"> </head> <body> <div> <a class="bz_bug_link bz_status_NEEDINFO " title="NEEDINFO - [BAT BDW] *ERROR* failed to enable link training/failed to start channel equalization" href="https://bugs.freedesktop.org/show_bug.cgi?id=96614#c14">Comment # 14</a> on <a class="bz_bug_link bz_status_NEEDINFO " title="NEEDINFO - [BAT BDW] *ERROR* failed to enable link training/failed to start channel equalization" href="https://bugs.freedesktop.org/show_bug.cgi?id=96614">bug 96614</a> from <a class="email" href="mailto:jari.tahvanainen@intel.com" title="Jari Tahvanainen <jari.tahvanainen@intel.com>"> Jari Tahvanainen</a> <pre>Please check out if CI_DRM test <a href="https://intel-gfx-ci.01.org/CI/CI_DRM_1757/fi-skl-6770hq/igt@gem_exec_suspend@basic-s3.html">https://intel-gfx-ci.01.org/CI/CI_DRM_1757/fi-skl-6770hq/igt@gem_exec_suspend@basic-s3.html</a> having same failure (and possible root cause) It is triggered with different test /opt/igt/tests/gem_exec_suspend --run-subtest basic-S3 but the failure symptoms in dmesg are equal to given by Imre ... [ 193.405060] [drm:verify_single_dpll_state.isra.78 [i915]] DPLL 3 [ 193.405103] [drm:intel_enable_shared_dpll [i915]] enable DPLL 1 (active 1, on? 0) for crtc 27 [ 193.405125] [drm:intel_enable_shared_dpll [i915]] enabling DPLL 1 [ 193.416309] [drm:intel_dp_aux_ch [i915]] dp_aux_ch timeout status 0x7d4003ff ... [ 29.132536] [drm:lspcon_init [i915]] No LSPCON detected, found type 1 HDMI [ 29.132556] [drm:lspcon_init [i915]] *ERROR* Failed to probe lspcon [ 29.132579] [drm:intel_ddi_init [i915]] *ERROR* LSPCON init failed on port B ... [ 195.052248] [drm:intel_dp_aux_ch [i915]] dp_aux_ch timeout status 0x7d4003ff [ 195.052256] [drm:drm_dp_dpcd_access] Too many retries, giving up. First error: -110 [ 195.052268] [drm:intel_dp_start_link_train [i915]] *ERROR* failed to enable link training [ 195.052278] [drm:intel_dp_program_link_training_pattern [i915]] Using DP training pattern TPS3 [ 195.060914] [drm:intel_dp_aux_ch [i915]] dp_aux_ch timeout status 0x7d4003ff ... [ 195.328772] [drm:intel_dp_aux_ch [i915]] dp_aux_ch timeout status 0x7d4003ff [ 195.328801] [drm:drm_dp_dpcd_access] Too many retries, giving up. First error: -110 [ 195.328812] [drm:intel_dp_start_link_train [i915]] *ERROR* failed to start channel equalization [ 195.337300] [drm:intel_dp_aux_ch [i915]] dp_aux_ch timeout status 0x7d4003ff ...</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are on the CC list for the bug.</li> <li>You are the QA Contact for the bug.</li> </ul> </body> </html>