Media Keys do not work in strictly confined snaps

[Martin Wimpress ]

I've created a snap for a music player. The mpris interface is hooked up (and works) and the following plugs are in use:

    plugs: [browser-support, gsettings, home, mount-observe, network, opengl, pulseaudio, unity7, x11]

However, the media keys are not being exposed by default so it is not possible to skip tracks or play/pause using media keys. Here is the output from /var/log/syslog when starting the snap.

Feb 10 11:26:44 skull dbus[1806]: apparmor="DENIED" operation="dbus_method_call" bus="session" path="/org/gnome/SettingsDaemon/MediaKeys" interface="org.freedesktop.DBus.Properties" member="GetAll" mask="send" name=":1.22" pid=16917 label="snap.spotify-client-test.spotify-client-test" peer_pid=2030 peer_label="unconfined"
Feb 10 11:26:44 skull dbus[1806]: apparmor="DENIED" operation="dbus_method_call" bus="session" path="/org/gnome/SettingsDaemon/MediaKeys" interface="org.gnome.SettingsDaemon.MediaKeys" member="GrabMediaPlayerKeys" mask="send" name=":1.22" pid=16917 label="snap.spotify-client-test.spotify-client-test" peer_pid=2030 peer_label="unconfined"

[Jamie Strandboge (jdstrand)]

This is in master and will be fixed in 2.23.

[Jamie Strandboge (jdstrand)]

This was fixed some time ago (verified it is in 2.24, but comment #1 says could be earlier).

[Jim Hodapp (jhodapp)]

Is there anything that a strictly confined app needs to do to take advantage of this? I use the confined Spotify client (spotify-client-test). Should it automatically just work for this snap if I'm using snapd 2.24 or above?

[Jamie Strandboge (jdstrand)]

@Jim, it was added to the unity7 interface, so there is nothing that else that needs to be done.

[Jamie Strandboge (jdstrand)]

Indeed, I just installed spotify-client-test with snapd 2.24 (on 17.04) and the media keys worked fine.

[Jim Hodapp (jhodapp)]

Perfect, thanks for the update and for testing that Jamie.

[Martin Wimpress  (flexiondotorg)]

Using Ubuntu 16.04.2 and snapd 2.25 I am still not able to control a strictly confined snap using skip/pause/play etc media keys.

[Jamie Strandboge (jdstrand)]

@Martin, can you file a new bug stating which snap and desktop environment you are using? Please add the 'snapd-interface' tag.