Public bug reported: Upon running updates ( which included many related to systemd - so that's my best guess as to the right package - feel free to reclassify ) I can't get an external monitor to actually receive a signal from my laptop anymore. I've tried both displayport and HDMI with no luck. You can flip the switch to turn the monitor "on", but it doesn't actually send any data to the monitor ( it reports "No signal" ).
ProblemType: Bug DistroRelease: Ubuntu 15.04 Package: systemd 219-5ubuntu1 ProcVersionSignature: Ubuntu 3.19.0-10.10-generic 3.19.2 Uname: Linux 3.19.0-10-generic x86_64 ApportVersion: 2.16.2-0ubuntu5 Architecture: amd64 CurrentDesktop: GNOME Date: Mon Mar 30 10:55:00 2015 InstallationDate: Installed on 2015-03-11 (19 days ago) InstallationMedia: Ubuntu-GNOME 15.04 "Vivid Vervet" - Alpha amd64 (20150306) MachineType: System76, Inc. Galago UltraPro ProcEnviron: TERM=xterm PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=en_US.UTF-8 SHELL=/bin/bash ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.19.0-10-generic root=UUID=44e9ad95-1beb-46e2-abaf-8960ae76bcff ro quiet splash vt.handoff=7 SourcePackage: systemd UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 12/12/2013 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: 4.6.5 dmi.board.asset.tag: Tag 12345 dmi.board.name: W740SU dmi.board.vendor: Notebook dmi.board.version: Not Applicable dmi.chassis.asset.tag: No Asset Tag dmi.chassis.type: 9 dmi.chassis.vendor: Notebook dmi.chassis.version: N/A dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr4.6.5:bd12/12/2013:svnSystem76,Inc.:pnGalagoUltraPro:pvrgalu1:rvnNotebook:rnW740SU:rvrNotApplicable:cvnNotebook:ct9:cvrN/A: dmi.product.name: Galago UltraPro dmi.product.version: galu1 dmi.sys.vendor: System76, Inc. ** Affects: systemd (Ubuntu) Importance: Undecided Status: Confirmed ** Tags: amd64 apport-bug vivid -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to systemd in Ubuntu. https://bugs.launchpad.net/bugs/1438306 Title: External monitors receive no signal To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/systemd/+bug/1438306/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs