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[Mathew Hodson <mathew.hodson@xxxxxxxxx>]

$ echo $XDG_CURRENT_DESKTOP
Unity
$ apt list lightdm
Listing... Done
lightdm/trusty-proposed,now 1.10.4-0ubuntu2 amd64 [installed]

** Tags removed: verification-needed
** Tags added: verification-done-trusty verification-needed-utopic

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https://bugs.launchpad.net/bugs/1383321

Title:
  Support XDG DesktopNames field in session files

Status in Light Display Manager:
  Fix Released
Status in Light Display Manager 1.10 series:
  Fix Released
Status in Light Display Manager 1.12 series:
  Fix Released
Status in lightdm package in Ubuntu:
  Fix Released
Status in lightdm source package in Trusty:
  Fix Committed
Status in lightdm source package in Utopic:
  Fix Committed
Status in lightdm source package in Vivid:
  Fix Released

Bug description:
  [Impact]
  LightDM doesn't support the XDG standard "DesktopNames" field in session .desktop files. Instead we only support X-LightDM-DesktopName which was used before the standard was set. Newer sessions might expect DesktopNames to work.

  [Test Case]
  1. Install a session which has DesktopNames set in /usr/share/xsessions/name.desktop. i.e. DesktopNames=GNOME;Unity;
  2. Start this session
  Expected result:
  XDG_CURRENT_DESKTOP is set to GNOME:Unity
  Observed result:
  XDG_CURRENT_DESKTOP is not set

  [Regression Potential]
  Low. This feature is only activated if the field is set.

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