Pedro Coca, thank you for reporting this and helping make Ubuntu better. Could you please run the following command from a terminal as it will automatically gather and attach updated debug information to this report:
apport-collect -p xorg 1500382 Please ensure you have the package xdiagnose installed, and that you click the Yes button for attaching additional debugging information. When reporting bugs in the future please use apport by using 'ubuntu- bug' and the name of the package affected. You can learn more about this functionality at https://wiki.ubuntu.com/ReportingBugs . ** Changed in: xorg (Ubuntu) Importance: Undecided => Low ** Changed in: xorg (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to xorg in Ubuntu. https://bugs.launchpad.net/bugs/1500382 Title: Screen blanking out when using an external 4k monitor with the internal screen turned off in display settings. Status in xorg package in Ubuntu: Incomplete Bug description: [Summary] Screen blanking out when using an external 4k monitor with the internal screen turned off in display settings. [Reproduce Steps] 1. Connect an external 4K monitor 2. Turn off the internal screen in the display settings [Results] Expected: Normal output Actual: Blank Screen [Additional Information] Product Name: Ubuntu 14.04.3 LTS on Dell XPS 13 9343 BIOS Version: BIOS A05 07/14/2015 Kernel Version: 3.13.0-63-generic CPU: Intel(R) Core(TM) i7-5500U CPU @ 2.40GHz GPU: Intel Corporation Broadwell-U Integrated Graphics (rev 09) Monitor: Dell monitor, model P2715Q To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1500382/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp