Failed to acquire name 'org.freedesktop.GeoClue2'

[Garvan Keeley]

On Nov 5, 2014, at 6:14 PM, Zeeshan Ali (Khattak) <zeeshanak at gnome.org> wrote:

> On Wed, Nov 5, 2014 at 10:17 PM, Garvan Keeley <gkeeley at mozilla.com> wrote:
>> 
>>>> Running the service first with sudo ./geoclue, I can see more output
>>>> 
>>>>       • $ ./demo/where-am-i
>>>>       • (geoclue:21664): GLib-GObject-WARNING **: invalid (NULL) pointer instance
>>>>       • (geoclue:21664): GLib-GObject-CRITICAL **: g_signal_connect_data: assertion `G_TYPE_CHECK_INSTANCE (instance)' failed
>>>>       • Client object: /org/freedesktop/GeoClue2/Client/7
>>>>       • (geoclue:21664): GLib-GObject-WARNING **: invalid (NULL) pointer instance
>>>>       • (geoclue:21664): GLib-GObject-CRITICAL **: g_signal_handlers_disconnect_matched: assertion `G_TYPE_CHECK_INSTANCE (instance)' failed
>>> 
>>> Assuming this is the output from geoclue rather than where-am-i (its
>>> not obvious from the paste above), these types of errors usually
>>> happen when your environment is somehow screwed (e.g built against a
>>> different glib than linking against at runtime) but it could also just
>>> be that you didn't do a clean build with different paths? Try `git
>>> clean -dfx` and rebuild/install starting from `./autogen.sh
>>> --sysconfdir=/etc --prefix=/usr`. Hope this helps.
>>> 
>>> Oh and geoclue will output more if you define the environment variable
>>> G_MESSAGES_DEBUG=Geoclue.
>> 
>> Thanks for the tips. Tried these steps (fresh pull, rebuild with sysconf/prefix, export G_MESSAGES_DEBUG) and getting the same result (no change in output from above). I have multiple linux distros to try (as I am working in VirtualBox), tried another distro, same result as this. So, both Ubuntu 14 LTS and Centos7+Gnome Desktop, same results.
>> Any more ideas?
> 
> Next thing that comes to mind is the fact that I don't recall testing
> Geoclue in a VM. Maybe we hit some conditions in the virtual
> environment that we don't on real machines. Worse yet, it could be
> specific to VirtualBox. I'll give it a go in Boxes tomorrow but if I
> can't reproduce it, I'll be heavily relying on you to get to the
> bottom of this. In the meantime, could you please find the backtraces
> for these warnings (especially the first one)? You want to define
> G_DEBUG=fatal-warnings,fatal-criticals to make glib crash on these so
> if you run in gdb, you can easily get a backtrace when you hit these.
> See "Running GLib Applications" section in glib reference manual for
> more details on this.
> 
> Also see if you hit the same with geoclue shipped on Fedora 21 beta.

On my non-VM arch linux, the latest code runs fine. I get the exact same output as above (the WARNING+CRITICAL), however, where-am-i outputs locations successfully.