Public bug reported:
CID: 201202-10511 Dell Inspiron 5420
After boot to desktop, there will be an "Unknown" display work as an
extended display on this system with 12.04.5
The problem with this issue is that you will be able to move the cursor
out of your screen, even open an application on the extended display.
Steps:
1. Install 12.04.5, boot to desktop with no external monitor connected
2. Open the "Display" utility, check whether there is an "Unknown" display
Expected result:
* There should be only a "Laptop" display
Actual result:
* An "Unknown" display available
ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: linux-image-3.13.0-32-generic 3.13.0-32.57~precise1 [modified:
boot/vmlinuz-3.13.0-32-generic]
ProcVersionSignature: Ubuntu 3.13.0-32.57~precise1-generic 3.13.11.4
Uname: Linux 3.13.0-32-generic x86_64
ApportVersion: 2.0.1-0ubuntu17.6
Architecture: amd64
Date: Mon Aug 11 22:36:12 2014
InstallationMedia: Ubuntu 12.04.5 LTS "Precise Pangolin" - Release amd64
(20140807.1)
MarkForUpload: True
ProcEnviron:
TERM=xterm
PATH=(custom, no user)
LANG=en_US.UTF-8
SHELL=/bin/bash
SourcePackage: linux-lts-trusty
UpgradeStatus: No upgrade log present (probably fresh install)
** Affects: linux-lts-trusty (Ubuntu)
Importance: Undecided
Status: New
** Tags: 201202-10511 amd64 apport-bug precise running-unity taipei-lab
** Attachment added: "Screenshot from 2014-08-11 22:51:22.png"
https://bugs.launchpad.net/bugs/1355562/+attachment/4174978/+files/Screenshot%20from%202014-08-11%2022%3A51%3A22.png
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https://bugs.launchpad.net/bugs/1355562
Title:
[Dell Inspiron 5420] An "Unknown" display appears with no external
display connected on 12.04.5
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