[Bug 1313170] [NEW] systemsettings > Display Configuration shows bogus monitor

Christian A. Reiter christian.a.reiter at gmail.com
Sat Apr 26 18:39:55 UTC 2014


Public bug reported:

Starting from Kubuntu 14.04, when I open systemsettings > Monitor > Display Configuration, I see, additionally to my built-in monitor on my laptop (Samsung RF511 - monitor displayed as "Seiko Epson Corporation"...) an additional screen named "VGA-1-2" - which is enabled.
This "monitor" is detected despite it does not exist. I discovered that because some apps I started did not appear on screen, and the mouse cursor somehow "vanished" behind the right screen edge, until I found out that they were placed on that second screen - I could "drag" the windows per Alt+LeftClick blindly from somewhere in the right to my actual monitor.

a screnshot of systemsettings is attached.
Then I attached a *real* second monitor to my laptop - systemsettings detects it correctly and expands the screen - but now tells me that I have *three* monitors...

This is really a regression to 13.10, and as the monitor is detected
*and* enabled by default, it is not really good to work with, as windows
are "vanishing" somwehere.


I can reproduce this behaviour with a Kubuntu live ISO on my system. So it is NOT my misconfiguration ;-)
I before had Kubuntu 13.10 with KDE 4.12.5, running well without this bug.
I am using a laptop with optimus graphics: intel/nvidia card, corresponding lspci lines:

00:02.0 VGA compatible controller: Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller (rev 09)
01:00.0 3D controller: NVIDIA Corporation GF108M [GeForce GT 540M] (rev a1)

What else (log files etc) do you need from me to help resolve this bug?

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: systemsettings 4:4.11.8-0ubuntu6
ProcVersionSignature: Ubuntu 3.13.0-24.46-generic 3.13.9
Uname: Linux 3.13.0-24-generic x86_64
NonfreeKernelModules: wl
ApportVersion: 2.14.1-0ubuntu3
Architecture: amd64
CurrentDesktop: KDE
Date: Sat Apr 26 20:12:03 2014
InstallationDate: Installed on 2013-11-27 (150 days ago)
InstallationMedia: Kubuntu 13.10 "Saucy Salamander" - Release amd64 (20131016.1)
SourcePackage: kde-workspace
UpgradeStatus: Upgraded to trusty on 2014-04-19 (7 days ago)

** Affects: kde-workspace (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug regression-release trusty

** Attachment added: "screewnshot showing bogus monitor (I've disabled it already)"
   https://bugs.launchpad.net/bugs/1313170/+attachment/4097817/+files/Bildschirmfoto9.png

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Title:
  systemsettings > Display Configuration shows bogus monitor

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