<html> <head> <base href="https://bugs.freedesktop.org/" /> </head> <body> <div> <a class="bz_bug_link bz_status_NEW " title="NEW - [SKL ] WARN_ON(!wm_changed) hit in the WM code with multiple pipes enabled" href="https://bugs.freedesktop.org/show_bug.cgi?id=89055#c14">Comment # 14</a> on <a class="bz_bug_link bz_status_NEW " title="NEW - [SKL ] WARN_ON(!wm_changed) hit in the WM code with multiple pipes enabled" href="https://bugs.freedesktop.org/show_bug.cgi?id=89055">bug 89055</a> from <a class="email" href="mailto:me+bugzilla@rotty.xx.vu" title="Andreas Rottmann <me+bugzilla@rotty.xx.vu>"> Andreas Rottmann</a> <pre>I can confirm this, with the following setup: - Linux 4.3.0 (vanilla source tree, built with Debian's make-kpkg, kernel config derived from Debian distro kernels) - Debian testing (stretch), amd64 - Intel(R) Core(TM) i5-6600K CPU @ 3.50GHz - Dual-monitor setup, one connected directly to DVI, the other attached via DisplayPort<->DVI adapter It seems I can reliably trigger the WARN_ON(!wm_changed) condition by switching between the monitors. Besides the backtrace-spam in my log, the system seems to run fine, no hangs, crashes, or the like (running Xorg from stretch with i3-wm). I notice scrolling-related artifacts in conkeror, but that may be a totally unrelated issue.</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>