https://bugs.freedesktop.org/show_bug.cgi?id=100289 --- Comment #9 from OmegaPhil@startmail.com --- As nothings happened on this ticket for a few months, I've reached the task again. I can confirm DisplayPort-0 remains connected according to xrandr when its off, prior to the problem happening. I'm now running Xorg with '-logverbose 255', but nothing more is logged when the problem occurs. A new failure mode has emerged - sometimes the middle Samsung monitor goes off, and requires disabling and reenabling via the XFCE4 Display program to get it back on again (haven't tried with xrandr etc). I'm a bit disappointed nothing more is logged by X, I'm going to see what I can find out in XFCE4's tooling. -- You are receiving this mail because: You are the assignee for the bug.