Public bug reported:
I connected to my laptop an external monitor (Dell P2314H) via HDMI and
since than then the system is extremely slow, but only when the external
display is connected.
ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: lightdm 1.10.5-0ubuntu1.1
ProcVersionSignature: Ubuntu 3.13.0-64.104-generic 3.13.11-ckt26
Uname: Linux 3.13.0-64-generic x86_64
ApportVersion: 2.14.1-0ubuntu3.13
Architecture: amd64
CurrentDesktop: Unity
Date: Sun Sep 13 13:17:56 2015
InstallationDate: Installed on 2015-06-03 (102 days ago)
InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2)
SourcePackage: lightdm
UpgradeStatus: No upgrade log present (probably fresh install)
** Affects: lightdm (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug third-party-packages trusty
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https://bugs.launchpad.net/bugs/1495206
Title:
System slow on dual-monitor
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