<html> <head> <base href="https://bugs.freedesktop.org/"> </head> <body> <div> <a class="bz_bug_link bz_status_NEW " title="NEW - [SKL] External VGA monitor not detected after DPMS/second hotplug" href="https://bugs.freedesktop.org/show_bug.cgi?id=99114#c11">Comment # 11</a> on <a class="bz_bug_link bz_status_NEW " title="NEW - [SKL] External VGA monitor not detected after DPMS/second hotplug" href="https://bugs.freedesktop.org/show_bug.cgi?id=99114">bug 99114</a> from <a class="email" href="mailto:imre.deak@intel.com" title="Imre Deak <imre.deak@intel.com>"> Imre Deak</a> <pre>(In reply to David Woodhouse from <a href="show_bug.cgi?id=99114#c10">comment #10</a>) > Created <a href="attachment.cgi?id=128617" name="attach_128617" title="script output with only debugging patch">attachment 128617</a> <a href="attachment.cgi?id=128617&action=edit" title="script output with only debugging patch">[details]</a> > script output with only debugging patch > > With only the first (debugging) patch. As expected, the monitor doesn't wake > up. Thanks, so the spurious HPD IRQ from the adaptor is gone with patch 3. That IRQ could've been the marker of the odd state the adaptor was after xset dpms off: reading the DPCD receiver cap and SINK_COUNT registers work just fine but reading DP_DOWNSTREAM_PORT_0 regs will result in AUX defers. Could you provide one more log, with the same setup, the 3 patches applied and the following script. It'd show if AUX accesses in D3 still cause a problem with these changes: dmesg -c xrandr --verbose xset dpms force off dmesg -c sleep 0.1 xrandr --verbose dmesg -c sleep 0.1 xset dpms force on dmesg -c xrandr --verbose dmesg -c</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the assignee for the bug.</li> <li>You are the QA Contact for the bug.</li> <li>You are on the CC list for the bug.</li> </ul> </body> </html>