JS ERROR: TypeError: ExtensionUtils.openPrefs is not a function

[bjornfor]

Hi,

I just tried this extension (version 3.36.6) on NixOS with GNOME 3.36.1 and got this error in the system journal when clicking the "Settings" button from the menu in the corner:

.gnome-shell-wr[2150]: JS ERROR: TypeError: ExtensionUtils.openPrefs is not a function
                                                _addSettingsItem/<@/run/current-system/sw/share/gnome-shell/extensions/shell-volume-mixer@derhofbauer.at/lib/widget/volume.js:248:56
                                                _addButton/<@/run/current-system/sw/share/gnome-shell/extensions/shell-volume-mixer@derhofbauer.at/lib/widget/menuItem.js:176:54
                                                activate@resource:///org/gnome/shell/ui/popupMenu.js:191:14
                                                vfunc_button_release_event@resource:///org/gnome/shell/ui/popupMenu.js:138:14

In the gui nothing happened (well, the menu closed, but I expected some "settings" window to appear).

Everything else seems to work.

[aleho]

Please use the latest version (either from the releases tab) or via extensions.gnome.org and report back if this problem still persists.

[bjornfor]

Sorry, I had a typo. Fixed now. So I am using the latest version of gnome-shell-volume-mixer: 3.36.6.

[aleho]

That's really fishy then. imports.misc.extensionUtils.openPrefs() is the official way to open preferences since 3.36 and should by used by all extensions and works on all systems I tested so far (Debian, Arch, Manjaro).

[bjornfor]

Thanks, that's valuable info. Might be something related to my system then (or NixOS + GNOME in general).

[aleho]

You could bring up Looking Glass (Alt+F2, lg, Enter) and check whether the method exists: imports.misc.extensionUtils.openPrefs().

And also imports.misc.config.PACKAGE_VERSION might be interesting.

[bjornfor]

TL;DR: In the meantime I did another OS upgrade and now have GNOME 3.36.2 (was .1). Problem solved! Clicking "Settings" now opens the settings.

Thanks for the tip about the Looking Glass. Here is the result (when it works):

>>> imports.misc.extensionUtils.openPrefs()
r(0) = <exception Error: openPrefs() can only be called from extensions>
>>> imports.misc.config.PACKAGE_VERSION
r(0) = 3.36.2

(Annoyingly I cannot directly copy from the Looking Glass, and it sits on top of every other window, so it is cumbersome to work with.)

Looking at the git history for NixOS, it seems I was in the middle of a GNOME update. Now it seems fully updated to GNOME 3.36.2. I'm not bothering going back to see what was wrong before. For the archive, I was on https://github.com/NixOS/nixpkgs/commit/5f14d99efed32721172a819b6e78a5520bab4bc6 and upgraded to https://github.com/NixOS/nixpkgs/commit/e15ab2cda754fcbf952ad02ff4c466dd36ba65f8.

[bjornfor]

Thanks, @aleho!

[aleho]

You're welcome! I suspected a half-finished update with some kind of Franken-GNOME, because the JS code is either there or not, there's no way Shell won't provide it starting with 3.36,