Hi Jonathan, Can you please boot with drm.debug=0xe and then attach the complete dmesg once right after boot, and once after the screen went black? Thanks, Daniel On Sun, Jan 20, 2013 at 1:38 AM, Jonathan Adamczewski <jonathan.adamczewski at gmail.com> wrote: > Hardware is a Dell XPS laptop, xorg log reports "Integrated Graphics > Chipset: Intel(R) Sandybridge Mobile (GT2)" > > Running a custom configured 3.7.2 based kernel, xf86-video-intel-2.20.17. > > I'm running the internal LVDS screen at 1080p and a Dell 2713HM monitor at > 2560x1440 connected via display port. > > Both screens run fine when X starts, but at some point the external monitor > will go black. The system doesn't recognize it as being disconnected - no > KDE popup asking if I want to change the monitor config as happens when > pulling the DP or power on the monitor. > > Sometimes it will return to life after a short amount of time, most of the > time it stays black indefinitely. A full power cycle of the monitor (pulling > the plug) will usually bring it back to life, but typically not for long. > > The screen usually goes black while there's a high degree of display > activity - a video playing, moving large windows around the screen, looking > around in google streetview, etc. It doesn't seem to matter which screen the > activity is on. > > It *seems* to be less likely if I run the external display at a lower > resolution. > > There's nothing that coincides with the screen going black in dmesg or the > xorg log. > > I've had no problems with this monitor under Windows 7 (gaming, videos, > etc). > > What I'm looking for: ideally a simple fix :) Otherwise, any suggestions > about where to look to gather more information on what could be happening > here - or other places to ask for help. > > Many thanks > > jonathan. > > _______________________________________________ > Intel-gfx mailing list > Intel-gfx at lists.freedesktop.org > http://lists.freedesktop.org/mailman/listinfo/intel-gfx > -- Daniel Vetter Software Engineer, Intel Corporation +41 (0) 79 365 57 48 - http://blog.ffwll.ch
