dock menu allows multiple, overlapping instances

[Lars Noodén]

This appears to be an interaction between XFCE and Cairo-Dock.

If in XFCE, one goes to XFCE-> Settings-> Session and Startup-> Application Autostart, and sets it to launch /usr/bin/cairo-dock, then one still has the option in Cairo-Dock to "+ Launch Cairo-Dock on startup". This gives two overlapping instances of cairo-dock, See the attached screenshot.

When checking to see if cairo-dock is already added to XFCE's startup applications, it should look to find manually added instances as well.

$ apt-cache policy cairo-dock
cairo-dock:
  Installerad: 3.3.99.beta1.2.really.3.3.2-0ubuntu2.1
  Kandidat: 3.3.99.beta1.2.really.3.3.2-0ubuntu2.1
  Versionstabell:
 *** 3.3.99.beta1.2.really.3.3.2-0ubuntu2.1 0
        500 http://fi.archive.ubuntu.com/ubuntu/ trusty-updates/universe amd64 Packages
        100 /var/lib/dpkg/status
     3.3.99.beta1.2.really.3.3.2-0ubuntu2 0
        500 http://fi.archive.ubuntu.com/ubuntu/ trusty/universe amd64 Packages

$ lsb_release -rd
Description: Ubuntu 14.04.2 LTS
Release: 14.04

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: cairo-dock 3.3.99.beta1.2.really.3.3.2-0ubuntu2.1
ProcVersionSignature: Ubuntu 3.16.0-41.57~14.04.1-generic 3.16.7-ckt11
Uname: Linux 3.16.0-41-generic x86_64
ApportVersion: 2.14.1-0ubuntu3.11
Architecture: amd64
CompositingMetacity: No value set for `/apps/metacity/general/compositing_manager'
Date: Sat Jul 4 16:13:12 2015
InstallationDate: Installed on 2015-06-28 (5 days ago)
InstallationMedia: Xubuntu 14.04.2 LTS "Trusty Tahr" - Release amd64 (20150218.1)
PackageArchitecture: all
PciDisplay: 02:00.0 VGA compatible controller [0300]: NVIDIA Corporation C79 [GeForce 9400] [10de:0861] (rev b1) (prog-if 00 [VGA controller])
RelatedPackageVersions:
 xserver-xorg N/A
 libgl1-mesa-glx N/A
 libdrm2 2.4.60-2~ubuntu14.04.1
 xserver-xorg-video-intel N/A
 xserver-xorg-video-ati N/A
SourcePackage: cairo-dock
UpgradeStatus: No upgrade log present (probably fresh install)
WM: No value set for `/desktop/gnome/applications/window_manager/current'
glxinfo: Error: [Errno 2] No such file or directory: 'glxinfo'
system: distro = Ubuntu, architecture = x86_64, kernel = 3.16.0-41-generic

[Matthieu Baerts (matttbe)]

Hello and sorry for the delay,

Yes, the dock allows using multiple instances because maybe you want to have multiple docks with different settings. But for that, you have to force the dock loading the configuration from another directory by using the '-d' option.

Maybe the dock should check if it's not already launched with the same settings. But it can lead to other problem: what if the dock wrongly detect that it's already launched?