18.10gnome-shellgnome-shell-extension
After upgrading to 18.10 I am experiencing very strange behaviour of gnome extensions. After my laptop goes into hibernation they all switch off and enabling them back on https://extensions.gnome.org/local/ doesn't help: nothing changes and when I refresh the page they are disabled again.
The only way to turn them back on is to reinstall them.
I had a similar problem myself and I tried resetting GNOME settings and it worked for me. After resetting GNOME settings, try logging out and back in (and to be safe, try rebooting as well) and now, you should hopefully be able to install the GNOME extensions.
How to remove one or all Gnome-shell extension(s) completely
Open terminal: (from app menu or by pressing Ctrl+Alt+T)
Then type: sudo su - and type your password and press enter
then type this command:
cd /home/"your user account"/.local/share/gnome-shell/extensions/
then type this command to see all your installed extensions: ls
then type this command to remove each or extension you really want to remove it completely:
rm -r name-of-extention
for example : rm -r dash-to-dock@yyy.gmail.com/
and press : Alt+F2 then type “r” yes simple just one r
Ok it done.
You can check extensions.gnome.org to be sure about this.
Best Answer
As per GNOME's security policy, whenever you hibernate or suspend or even lock your screen, all of your extensions get disabled automatically until you get back in, and only then the extensions get re-enabled. It seems in your case somehow the re-enabling process is not getting executed properly. This should be considered a bug, consider reporting at launchpad.net.
Also as a workaround after getting back from hibernation / suspension / lock-screen, restart GNOME shell once by pressing Alt+F2 then typing
r, and finally pressing Enter, the extensions should start work again.