https://bugzilla.kernel.org/show_bug.cgi?id=58121
Summary: Radeon SUMO: LVDS panel blanks when enabling external monitor Product: Drivers Version: 2.5 Kernel Version: 3.9 Platform: All OS/Version: Linux Tree: Mainline Status: NEW Severity: normal Priority: P1 Component: Video(DRI - non Intel) AssignedTo: drivers_video-dri@kernel-bugs.osdl.org ReportedBy: niels_ole@salscheider-online.de Regression: No
Created an attachment (id=101411) --> (https://bugzilla.kernel.org/attachment.cgi?id=101411) dmesg with drm.debug=4
When I enable both my LVDS panel and an external monitor (e.g. DP or VGA), my LVDS panel blanks. This is on a radeon SUMO GPU (AMD A6-3410MX APU). I have attached the dmesg output with drm.debug=4 and my Xorg.0.log.