(Solved) Some menu items have stopped

[edwardj_meech]

I'm using Linux Mint 20.3 on a PC. I have just noticed that clicking 'Menu - Control Center - System Settings' does nothing. Also, 'Menu - Preferences - Screensaver'. These are just two - there are others. I found this problem because I wanted to change the time out of the screensaver. This is not something I want to do often so I have no idea how long it's been like this and in the grand scheme of things isn't important. But I suppose there is a setting somewhere that is causing it.
I have no problems with Mint or installed software - I keep the system updated.
Any Ideas any one?

[spamegg]

Which desktop are you running? (From the name "Control Center" I think it's MATE maybe?)

Can you run those programs from the Terminal and post their error messages? I am not sure what the Terminal commands are for those though, since I don't use MATE... Maybe mate-screensaver?

[edwardj_meech]

Hi
I'm using Cinnamon 5.2.7
System: Kernel: 5.15.0-72-generic x86_64 bits: 64 compiler: N/A Desktop: Cinnamon 5.2.7
wm: muffin dm: LightDM Distro: Linux Mint 20.3 Una base: Ubuntu 20.04 focal

[spamegg]

That's weird. It says you are using Cinnamon, but I am not aware of any "Control Center" on Cinnamon.

Can you try launching these from the Terminal?

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cinnamon-settings

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cinnamon-settings screensaver

EDIT: Ah, I just found something called cinnamon-control-center which opens a weird simplified version of System Settings. I think this might be an old deprecated version of System Settings that got leftover maybe?

[edwardj_meech]

Hi,
Thanks for the prompt reply.
Cinnamon-settings Gives a response - 'No module named 'certifi'' Also Cinnamon-settings screensaver.
'cinnamon-control-center' gives the simple System setting window as you say.
How do I update cinnamon?

The Terminal shows the following - none of which I understand, while control-center is running.

(cinnamon-control-center:148867): dconf-DEBUG: 15:48:32.110: watch_fast: "/org/cinnamon/settings-daemon/plugins/color/" (establishing: 0, active: 0)
(cinnamon-control-center:148867): dconf-DEBUG: 15:48:32.110: watch_established: "/org/cinnamon/settings-daemon/plugins/color/" (establishing: 1)
(cinnamon-control-center:148867): dconf-DEBUG: 15:48:46.168: unwatch_fast: "/org/cinnamon/settings-daemon/plugins/color/" (active: 1, establishing: 0)
(cinnamon-control-center:148867): dconf-DEBUG: 15:48:47.965: watch_fast: "/org/cinnamon/control-center/display/" (establishing: 0, active: 0)
(cinnamon-control-center:148867): dconf-DEBUG: 15:48:47.966: watch_established: "/org/cinnamon/control-center/display/" (establishing: 1)
(cinnamon-control-center:148867): dconf-DEBUG: 15:48:47.978: watch_fast: "/org/cinnamon/desktop/interface/" (establishing: 0, active: 0)
(cinnamon-control-center:148867): dconf-DEBUG: 15:48:47.979: watch_established: "/org/cinnamon/desktop/interface/" (establishing: 1)
(cinnamon-control-center:148867): Gtk-DEBUG: 15:48:48.057: State 0 for FooScrollArea 0x5589d82df1a0 doesn't match state 128 set via gtk_style_context_set_state ()
(cinnamon-control-center:148867): Gtk-DEBUG: 15:48:48.057: State 0 for FooScrollArea 0x5589d82df1a0 doesn't match state 128 set via gtk_style_context_set_state ()
(cinnamon-control-center:148867): Gtk-DEBUG: 15:48:48.057: State 4 for FooScrollArea 0x5589d82df1a0 doesn't match state 128 set via gtk_style_context_set_state ()
(cinnamon-control-center:148867): dconf-DEBUG: 15:49:37.652: watch_fast: "/system/proxy/" (establishing: 0, active: 0)
(cinnamon-control-center:148867): dconf-DEBUG: 15:49:37.652: watch_fast: "/system/proxy/http/" (establishing: 0, active: 0)
(cinnamon-control-center:148867): dconf-DEBUG: 15:49:37.652: watch_fast: "/system/proxy/https/" (establishing: 0, active: 0)
(cinnamon-control-center:148867): dconf-DEBUG: 15:49:37.652: watch_established: "/system/proxy/" (establishing: 1)
(cinnamon-control-center:148867): dconf-DEBUG: 15:49:37.652: watch_established: "/system/proxy/http/" (establishing: 1)
(cinnamon-control-center:148867): dconf-DEBUG: 15:49:37.652: watch_fast: "/system/proxy/ftp/" (establishing: 0, active: 0)
(cinnamon-control-center:148867): dconf-DEBUG: 15:49:37.652: watch_fast: "/system/proxy/socks/" (establishing: 0, active: 0)
(cinnamon-control-center:148867): dconf-DEBUG: 15:49:37.653: watch_established: "/system/proxy/https/" (establishing: 1)
(cinnamon-control-center:148867): dconf-DEBUG: 15:49:37.653: watch_established: "/system/proxy/ftp/" (establishing: 1)
(cinnamon-control-center:148867): dconf-DEBUG: 15:49:37.653: watch_established: "/system/proxy/socks/" (establishing: 1)
(cinnamon-control-center:148867): dconf-DEBUG: 15:49:45.861: watch_fast: "/system/proxy/" (establishing: 0, active: 1)
(cinnamon-control-center:148867): dconf-DEBUG: 15:49:45.861: watch_fast: "/system/proxy/http/" (establishing: 0, active: 1)
(cinnamon-control-center:148867): dconf-DEBUG: 15:49:45.861: watch_fast: "/system/proxy/https/" (establishing: 0, active: 1)
(cinnamon-control-center:148867): dconf-DEBUG: 15:49:45.861: watch_fast: "/system/proxy/ftp/" (establishing: 0, active: 1)
(cinnamon-control-center:148867): dconf-DEBUG: 15:49:45.861: watch_fast: "/system/proxy/socks/" (establishing: 0, active: 1)
(cinnamon-control-center:148867): dconf-DEBUG: 15:49:45.862: unwatch_fast: "/system/proxy/socks/" (active: 2, establishing: 0)
(cinnamon-control-center:148867): dconf-DEBUG: 15:49:45.862: unwatch_fast: "/system/proxy/ftp/" (active: 2, establishing: 0)
(cinnamon-control-center:148867): dconf-DEBUG: 15:49:45.862: unwatch_fast: "/system/proxy/https/" (active: 2, establishing: 0)
(cinnamon-control-center:148867): dconf-DEBUG: 15:49:45.862: unwatch_fast: "/system/proxy/http/" (active: 2, establishing: 0)
(cinnamon-control-center:148867): dconf-DEBUG: 15:49:45.862: unwatch_fast: "/system/proxy/" (active: 2, establishing: 0)
(cinnamon-control-center:148867): dconf-DEBUG: 15:49:45.863: unwatch_fast: "/system/proxy/socks/" (active: 1, establishing: 0)
(cinnamon-control-center:148867): dconf-DEBUG: 15:49:45.863: unwatch_fast: "/system/proxy/ftp/" (active: 1, establishing: 0)
(cinnamon-control-center:148867): dconf-DEBUG: 15:49:45.863: unwatch_fast: "/system/proxy/https/" (active: 1, establishing: 0)
(cinnamon-control-center:148867): dconf-DEBUG: 15:49:45.863: unwatch_fast: "/system/proxy/http/" (active: 1, establishing: 0)
(cinnamon-control-center:148867): dconf-DEBUG: 15:49:45.863: unwatch_fast: "/system/proxy/" (active: 1, establishing: 0)

[spamegg]

Can you do

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apt reinstall python3-certifi

and then try again?

[edwardj_meech]

Great - that has solved the problem. Maybe it happened during an update?
Thanks for your help.
Edward