Switch Flashback sessions to XDG_CURRENT_DESKTOP=Unity

Status changed to 'Confirmed' because the bug affects multiple users.

This bug was fixed in the package gnome-panel - 1:3.6.2-0ubuntu15

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gnome-panel (1:3.6.2-0ubuntu15) saucy; urgency=low

  * Identify as GNOME; identifying as Unity is buggy (LP: #1224217)
 -- Jeremy Bicha <email address hidden> Thu, 12 Sep 2013 22:29:02 -0400

I had a super quick look into why this buggy when identifying as Unity

gnome-panel.desktop and nautilus-classic.desktop, will need to have Unity added to "OnlyShowIn".

Still indicators won't load, this is probably something similar, but not sure where that would be controlled from?

I will also add, that using Unity, should mean you will load Unity-control-center and unity-settings-daemon (once it happens ), which will be required since legacy code in the gnome- packages will be dropped once the forking is complete.

Tim wrote:
> gnome-panel.desktop and nautilus-classic.desktop, will need to have Unity added to "OnlyShowIn".

Adding a nautilus task then.

Re-using this bug report to track the switch to Unity identification. The only remaining blocker is non-working indicators:

- All .desktop autostart files for indicators have NotShowIn=Unity;
- In Unity sessions, indicators are autostarted by Upstart:
   unity-panel-service calls "upstart_emit_event_sync (NULL, priv->upstart, "indicator-services-start", NULL, 0);" on startup
   and "upstart_emit_event_sync (NULL, priv->upstart, "indicator-services-end", NULL, 0);" on shutdown.

Possible solutions:

- Add upstart support to indicator-applet (looks too late at this point in release cycle);
- Do not identify as Unity, but only switch to unity-s-d/unity-c-c.

Tim, what do you think?

Dimtry, while g-s-d and g-c-c are the main components affected by XDG_CURRENT_DESKTOP, it is also used in other places such as client side decorations on nautilus/epiphany, goa vs uoa in empathy/gnome-contacts, and probably other things also .

This is in particular a bigger issue for components started from upstart user sessions, since they don't even have access to DESKTOP_SESSION (my proposed displayconfig package falls into this group).

OK, I have applied a hack I mentioned to you earlier today on IRC. Test packages are available in ppa:mitya57/gnome-test.

Known issue: gnome-settings-daemon is still started by something.

gnome-settings-daemon is started by upstart user session

Can we just delete that user session or at least disable it in Unity?

I will patch the upstart config to check XDG_CURRENT_DESKTOP rather than INSTANCE!=ubuntu

looks like will need to patch gnome-session, u-s-d and g-s-d to make this work, I will prepare some patches tomorrow.

Thanks Tim!

I've managed to make the gnome-panel code a bit less hacky (by using initctl emit), and uploaded.

Nautilus task seems to be no longer needed.

This bug was fixed in the package gnome-panel - 1:3.8.0-1ubuntu9

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gnome-panel (1:3.8.0-1ubuntu9) trusty; urgency=low

  * Revert changes to 41_classic_layout.patch introduced in -1ubuntu4,
    this causes two keyboard indicators to be visible.
  * Identify as Unity, again (LP: #1224217).
  * Use unity-settings-daemon instead of gnome-settings-daemon.
  * Add gnome-flashback-services.desktop to autostart indicators.
  * Bump Standards-Version to 3.9.5, no changes needed.
 -- Dmitry Shachnev <email address hidden> Sat, 01 Mar 2014 14:39:38 +0400

This bug was fixed in the package gnome-settings-daemon - 3.8.6.1-0ubuntu10

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gnome-settings-daemon (3.8.6.1-0ubuntu10) trusty; urgency=medium

  * gnome-settings-daemon.user-session.upstart: Use XDG_CURRENT_DESKTOP
    as the instance specifier for gnome-session upstart jobs, since
    other sessions apart from ubuntu will need to use u-s-d (LP: #1224217)
 -- Tim Lunn <email address hidden> Wed, 12 Mar 2014 16:47:04 +1100

This bug was fixed in the package gnome-session - 3.9.90-0ubuntu12

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gnome-session (3.9.90-0ubuntu12) trusty; urgency=medium

  * gnome-session-bin.user-session.upstart: Use XDG_CURRENT_DESKTOP
    as the instance specifier for gnome-session upstart jobs, since
    other sessions apart from ubuntu will need to use u-s-d (LP: #1224217)
 -- Tim Lunn <email address hidden> Wed, 12 Mar 2014 16:27:59 +1100

This bug was fixed in the package unity-settings-daemon - 14.04.0+14.04.20140310-0ubuntu2

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unity-settings-daemon (14.04.0+14.04.20140310-0ubuntu2) trusty; urgency=medium

  * unity-settings-demon.user-session.upstart: Use XDG_CURRENT_DESKTOP
    as the instance specifier for gnome-session upstart jobs, since
    other sessions apart from ubuntu will need to use u-s-d (LP: #1224217)
 -- Tim Lunn <email address hidden> Wed, 12 Mar 2014 16:45:51 +1100