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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: xorg (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug vivid
-- 
External monitors receive no signal over DisplayPort
https://bugs.launchpad.net/bugs/1438306
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