In BootMesg.txt you can see very clearly the two related messages, it detects both monitors and then somehow forgets about it. Before Logging in (both monitor recognized in log in screen), Terminal 1 shows:
$ xrandr can't open display After the odd workaround (plug out/in of VGA adapter), Terminal now in GUI shows: $xrandr Screen 0: minimum 320 x 200, current 3200 x 1080, maximum 8192 x 8192 LVDS connected (normal left inverted right x axis y axis) 1920x1080 60.0 + 1680x1050 60.0 1400x1050 60.0 1280x1024 59.9 1440x900 59.9 1280x960 59.9 1280x854 59.9 1280x800 59.8 1280x720 59.9 1152x768 59.8 1024x768 59.9 800x600 59.9 848x480 59.7 720x480 59.7 640x480 59.4 HDMI-0 connected primary 1920x1080+0+0 (normal left inverted right x axis y axis) 160mm x 90mm 1920x1080 60.0*+ 50.0 59.9 1920x1080i 60.1 50.0 60.0 1600x1200 60.0 1680x1050 59.9 1280x1024 60.0 1440x900 59.9 1280x960 60.0 1280x800 59.9 1280x720 60.0 50.0 59.9 1024x768 60.0 800x600 60.3 56.2 720x576 50.0 720x480 60.0 59.9 640x480 60.0 59.9 VGA-0 connected 1280x1024+1920+0 (normal left inverted right x axis y axis) 380mm x 300mm 1280x1024 75.0* 60.0 1152x864 75.0 1024x768 75.1 70.1 60.0 832x624 74.6 800x600 72.2 75.0 60.3 56.2 640x480 75.0 72.8 66.7 60.0 720x400 70.1 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1373629 Title: [drm:drm_crtc_helper_set_config] *ERROR* failed to set mode on [CRTC:14] To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-ati/+bug/1373629/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
