<html> <head> <base href="https://bugs.freedesktop.org/"> </head> <body> <div> <a class="bz_bug_link bz_status_NEW " title="NEW - [i965][SKL] External display blanks intermittently with Skylake in Linux 4.9rc2" href="https://bugs.freedesktop.org/show_bug.cgi?id=98472#c4">Comment # 4</a> on <a class="bz_bug_link bz_status_NEW " title="NEW - [i965][SKL] External display blanks intermittently with Skylake in Linux 4.9rc2" href="https://bugs.freedesktop.org/show_bug.cgi?id=98472">bug 98472</a> from <a class="email" href="mailto:brettcsmith@brettcsmith.org" title="Brett Smith <brettcsmith@brettcsmith.org>"> Brett Smith</a> <pre>My monitor can be switched to DisplayPort 1.1, but if I do that, I drop down to either a lower resolution or a 30Hz refresh rate. I can only run <a href="mailto:3840x2160@60.0Hz">3840x2160@60.0Hz</a> with DisplayPort 1.2. I would still consider this a bug even if blanking does not occur with DisplayPort 1.1. I can add some more information: This issue still occurs with drm-intel-nightly 2016y-11m-10d-09h-29m-41s (commit eb88955cdc6a1f4dabff6bc27747c1c9e9a3aaef). I actually have two of the same monitor, one at home and another at the office. For some reason, the monitor at the office blanks much more often than the one at home. They both do it, but the one at home will run for hours without blanking, while the one at the office sometimes has fits where it blanks several times per minute. I'm really not sure how to debug something like that, but I'm happy to try suggestions. I have tried swapping out the DisplayPort cable I use at the office, but that didn't make any noticeable change.</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the QA Contact for the bug.</li> <li>You are on the CC list for the bug.</li> <li>You are the assignee for the bug.</li> </ul> </body> </html>