After using the laptop without the second external monitor yesterday, today it suddenly worked again with both external monitors!
If I look at the xrandr-output, I see the monitor connected over an HDMI3 device: Screen 0: minimum 320 x 200, current 3840 x 1080, maximum 32767 x 32767 LVDS1 connected (normal left inverted right x axis y axis) 1600x900 60.1 + 40.0 1440x900 59.9 1360x768 59.8 60.0 1152x864 60.0 1024x768 60.0 800x600 60.3 56.2 640x480 59.9 VGA1 connected 1920x1080+1920+0 (normal left inverted right x axis y axis) 521mm x 293mm 1920x1080 60.0*+ 1680x1050 60.0 1280x1024 75.0 60.0 1440x900 59.9 1280x960 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 72.8 75.0 66.7 60.0 720x400 70.1 HDMI1 disconnected (normal left inverted right x axis y axis) DP1 disconnected (normal left inverted right x axis y axis) HDMI2 disconnected (normal left inverted right x axis y axis) HDMI3 connected 1920x1080+0+0 (normal left inverted right x axis y axis) 521mm x 293mm 1920x1080 60.0*+ 1680x1050 59.9 1280x1024 75.0 60.0 1440x900 59.9 1280x960 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 72.8 75.0 66.7 60.0 720x400 70.1 DP2 disconnected (normal left inverted right x axis y axis) DP3 disconnected (normal left inverted right x axis y axis) No updates seem to happen in the meantime... So maybe it is a question of how to start up the laptop (with all monitors connected, with power cable plugged in, ...). However, I will attach the latest logs so that one might find the difference... -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1174335 Title: Second external monitor (over display port) not working anymore To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1174335/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
