<html> <head> <base href="https://bugs.freedesktop.org/" /> </head> <body> <div> <a class="bz_bug_link bz_status_NEEDINFO " title="NEEDINFO --- - Displayport output suddenly blank; "encoder's hw state doesn't match sw tracking (expected 1, found 0)"" href="https://bugs.freedesktop.org/show_bug.cgi?id=62056#c2">Comment # 2</a> on <a class="bz_bug_link bz_status_NEEDINFO " title="NEEDINFO --- - Displayport output suddenly blank; "encoder's hw state doesn't match sw tracking (expected 1, found 0)"" href="https://bugs.freedesktop.org/show_bug.cgi?id=62056">bug 62056</a> from <a class="email" href="mailto:jkt@flaska.net" title="Jan Kundrát <jkt@flaska.net>"> Jan Kundrát</a> <pre>Created <a href="attachment.cgi?id=76271" name="attach_76271" title="Recent part of the dmesg">attachment 76271</a> <a href="attachment.cgi?id=76271&action=edit" title="Recent part of the dmesg">[details]</a> Recent part of the dmesg I've discovered that the laptop was not able to detect the external LCD over the DP even after a reboot, a power cycle, a kernel update and several plug-replug cycles of the DP cable; I've also switched the cable to the laptop's own output instead of going through the dock. The DVI output worked, though. In the end, a power cycle of the *monitor* fixed the problem. This might therefore involve some low-level, hardware-specific detail which might make it hard to properly diagnose. Please feel free to close this as a one-time glitch. The machine has been up for a few days and I'd prefer not to add a ful log of everything. Attached is the log starting on the preceding evening. If you'd like to see the initial boot as well, I can provide it -- just tell me. In the meanwhile, I've upgraded to 3.8.1 and recent xf86-video-intel git.</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the QA Contact for the bug.</li> <li>You are the assignee for the bug.</li> </ul> </body> </html>