https://bugs.freedesktop.org/show_bug.cgi?id=46711
Bug #: 46711 Summary: Monitor not turning on after DisplayPort re-plug in Xorg Classification: Unclassified Product: DRI Version: unspecified Platform: x86-64 (AMD64) OS/Version: Linux (All) Status: NEW Severity: major Priority: medium Component: DRM/Radeon AssignedTo: dri-devel@lists.freedesktop.org ReportedBy: tvrtko.ursulin@onelan.co.uk
Created attachment 57747 --> https://bugs.freedesktop.org/attachment.cgi?id=57747 Kernel DRM debug log showing successful replug without, and failing with Xorg running.
On a AMD G-T56N (Radeon HD 6310) box connected to the monitor via DisplayPort monitor does not come on after re-plugging the display cable but claims to be in power save.
At the same time, according to xrandr it is connected and displaying.
Stopping Xorg and monitor comes back up displaying the console.
Re-pluging the display cable with no Xorg running is fine.
Attached kernel DRM debug log. Log itself which ends after cable re-plug when Xorg is running. Which is when the display goes into power save. Before that in the same log you can find Xorg starting up and before that a successful cable re- plug when X was not running.
All this is with kernel.org 3.3.0-rc4 kernel. Xorg packages are:
xorg-x11-server-Xorg-1.11.3-1.fc16.x86_64 xorg-x11-drv-ati-6.14.3-8.20120209gite20284409.fc16.x86_64