<html> <head> <base href="https://bugs.freedesktop.org/"> </head> <body> <div> <a class="bz_bug_link bz_status_ASSIGNED " title="ASSIGNED - i915: regression: after DP connected monitor is turned off, when turned on, it does not work anymore" href="https://bugs.freedesktop.org/show_bug.cgi?id=88124#c17">Comment # 17</a> on <a class="bz_bug_link bz_status_ASSIGNED " title="ASSIGNED - i915: regression: after DP connected monitor is turned off, when turned on, it does not work anymore" href="https://bugs.freedesktop.org/show_bug.cgi?id=88124">bug 88124</a> from <a class="email" href="mailto:manasi.d.navare@intel.com" title="Manasi <manasi.d.navare@intel.com>"> Manasi</a> <pre>Thanks for testing with 410-rc6. I tried to reproduce it here at my end with 4.10-rc6 and I can't. But again in my case, the dmesg log says "Sink is not MST capable". But in your case, whats confusing is: [ 2.492671] [drm:intel_dp_read_desc [i915]] DP branch: OUI 90-cc-24 dev-ID SYNA HW-rev 1.0 SW-rev 2.17 [ 2.493030] [drm:intel_dp_detect [i915]] Sink is MST capable This means somehow there is a branch device in the patch of laptop's DP and DP on the monitor. Are you using any kind of an adapter? Does your laptop have multiple DP connectors? Could you also run this command and tell me what the output is with the monitor on and then after you see the problem: sudo su cat /sys/kernel/debug/dri/0/i915_display_info Regards Manasi</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>