<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 (via docking station) monitor is turned off, when turned on, it does not work anymore" href="https://bugs.freedesktop.org/show_bug.cgi?id=88124#c43">Comment # 43</a> on <a class="bz_bug_link bz_status_ASSIGNED " title="ASSIGNED - i915: regression: after DP connected (via docking station) 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:dhinakaran.pandiyan@intel.com" title="Dhinakaran Pandiyan <dhinakaran.pandiyan@intel.com>"> Dhinakaran Pandiyan</a> <pre>I noticed an interesting debug message [ 59.999079] [drm:intel_get_hpd_pins [i915]] hotplug event received, stat 0x00400000, dig 0x10101210, pins 0x00000040 [ 59.999116] [drm:intel_hpd_irq_handler [i915]] digital hpd port C - long [ 59.999151] [drm:intel_hpd_irq_handler [i915]] Received HPD interrupt on PIN 6 - cnt: 0 [ 59.999217] [drm:intel_dp_hpd_pulse [i915]] got hpd irq on port C - long [ 59.999258] [drm:i915_hotplug_work_func [i915]] running encoder hotplug functions [ 59.999297] [drm:i915_hotplug_work_func [i915]] Connector DP-2 (pin 6) received hotplug event. [ 59.999332] [drm:intel_dp_detect [i915]] [CONNECTOR:63:DP-2] [ 59.999368] [drm:intel_dp_detect [i915]] MST device may have disappeared 1 vs 1 When I turn off the DP monitor connected to a Startech MST hub device, I see a "short" pulse. But, the Lenovo dock here is sending a "long" pulse.</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are on the CC list for the bug.</li> </ul> </body> </html>