media keys sometimes stop working

[damian101]

 * Cinnamon version 4.0.10-2
 * RebornOS (Arch)
 * Nvidia Quadro P4000 Mobile, nvidia-dkms 430.14-8
 * 64 bit

The media keys (play, pause, next/previous track) sometimes stop working. After rebooting everything works fine again.

[DemonTPx]

This happens to me as well. It seems that closing the application that responds to the media keys causes this. This is probably related to this issue: https://gitlab.gnome.org/GNOME/gnome-settings-daemon/issues/45

I get these errors in my ~/.xsession-errors when they stop working:

(csd-media-keys:2932): media-keys-plugin-WARNING **: 08:59:20.240: Error calling method GDBus.Error:org.freedesktop.DBus.Error.ServiceUnknown: The name org.mpris.MediaPlayer2.xplayer was not provided by any .service files

Running killall csd-media-keys fixes it for me.

[mondalaci]

Cinnamon 4.4.8 is also affected, and the suggested workaround works.

[indierodo]

Could be related: the output of csd-media-keys --verbose shows that is creating a proxy for opened apps. For example

I open chromium and start playing music on spotify.
I hate that song, so I press 'next' media key.
$ csd-media-keys --verbose

(csd-media-keys:16681): media-keys-plugin-DEBUG: 13:27:56.724: Calling method 'HandleKeybinding' for media-keys
(csd-media-keys:16681): media-keys-plugin-DEBUG: 13:27:56.724: Launching action for key type '15' (on device id 0)
(csd-media-keys:16681): media-keys-plugin-DEBUG: 13:27:56.724: Media key 'Next' pressed
(csd-media-keys:16681): media-keys-plugin-DEBUG: 13:27:28.882: calling Next over dbus to mpris client org.mpris.MediaPlayer2.chromium.instance2597

The media keys plugin creates a proxy for chromium first, so the keys don't work.
I close chromium, then this happens:
$ csd-media-keys --verbose

(csd-media-keys:16681): media-keys-plugin-DEBUG: 13:27:54.857: Creating proxy for for org.mpris.MediaPlayer2.spotify
(csd-media-keys:16681): media-keys-plugin-DEBUG: 13:27:56.724: Calling method 'HandleKeybinding' for media-keys
(csd-media-keys:16681): media-keys-plugin-DEBUG: 13:27:56.724: Launching action for key type '15' (on device id 0)
(csd-media-keys:16681): media-keys-plugin-DEBUG: 13:27:56.724: Media key 'Next' pressed
(csd-media-keys:16681): media-keys-plugin-DEBUG: 13:27:56.724: calling Next over dbus to mpris client org.mpris.MediaPlayer2.spotify

And now it works.

[xhpohanka]

I'm also affected by this issue.

and this is what I see in .xsession-errors

** (csd-media-keys:1441): WARNING **: 07:47:40.049: Unable to get default sink
** (csd-media-keys:1441): WARNING **: 11:47:53.281: Unable to get default sink
** (csd-media-keys:1441): WARNING **: 16:07:37.440: Unable to get default sink
** (csd-media-keys:1441): WARNING **: 16:37:18.355: Unable to get default sink
** (csd-media-keys:1441): WARNING **: 07:41:05.569: Unable to get default sink
** (csd-media-keys:1441): WARNING **: 10:32:24.090: Error calling method GDBus.Error:org.freedesktop.DBus.Error.ServiceUnknown: The name org.mpris.MediaPlayer2.cantata was not provided by any .service files
** (csd-media-keys:1441): WARNING **: 10:32:27.086: Error calling method GDBus.Error:org.freedesktop.DBus.Error.ServiceUnknown: The name org.mpris.MediaPlayer2.cantata was not provided by any .service files
** (csd-media-keys:1441): WARNING **: 10:32:27.548: Error calling method GDBus.Error:org.freedesktop.DBus.Error.ServiceUnknown: The name org.mpris.MediaPlayer2.cantata was not provided by any .service files
** (csd-media-keys:1441): WARNING **: 10:32:30.052: Error calling method GDBus.Error:org.freedesktop.DBus.Error.ServiceUnknown: The name org.mpris.MediaPlayer2.cantata was not provided by any .service files
** (csd-media-keys:1441): WARNING **: 10:32:30.384: Error calling method GDBus.Error:org.freedesktop.DBus.Error.ServiceUnknown: The name org.mpris.MediaPlayer2.cantata was not provided by any .service files
cinnamon-session[1389]: WARNING: t+247998,87065s: Application 'cinnamon-settings-daemon-media-keys.desktop' killed by signal 15

After killing it immediately works again

[DemonTPx]

I haven't had problems with this issue anymore for some time and am cinnamon 4.8.6. What version are you running, @xhpohanka ?

[mondalaci]

Also running Cinnamon 4.8.6 and no issues for months.

[xhpohanka]

I'm on up to date Arch linux.

$ cinnamon --version
Cinnamon 4.8.6

My computer is a laptop so maybe it can be caused by attaching and detaching various keyboards?

[xhpohanka]

I was just affected again by this strange behavior.

Each press of media key fires this message in .xsession-errors

** (csd-media-keys:1663): WARNING **: 10:53:45.150: Error calling method GDBus.Error:org.freedesktop.DBus.Error.ServiceUnknown: The name org.mpris.MediaPlayer2.smplayer was not provided by any .service files

When I start smplayer, then it is correctly controlled by media keys, but after closing it is still the same. Can the issue be in smplayer? Is it possible that it is not unsubscribing from dbus correctly? Even in such case I would expect some robustness in csd-media-keys to be able to handle unexpected situations.

I still do not know exact way how to reproduce.

[mhoran]

I believe this bug may have been inherited from gnome-settings-daemon: https://gitlab.gnome.org/GNOME/gnome-settings-daemon/-/issues/45. Applying this patch should resolve: https://gitlab.gnome.org/GNOME/gnome-settings-daemon/-/merge_requests/87/diffs.

[xhpohanka]

I'm testing csd-media-keys with this patch. So far it seems that my issues are gone. Let's wait few days more...