<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#c18">Comment # 18</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:jiri@resnulli.us" title="Jiri Pirko <jiri@resnulli.us>"> Jiri Pirko</a> <pre>(In reply to Manasi from <a href="show_bug.cgi?id=88124#c17">comment #17</a>) > 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? There is a docking station in between. I just ordered microdisplayport-display port cable to be able to test this directly. > > 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 Will provide this at weekend. (I don't have the testing laptop with me now) > > 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>