Missing panel layouts in UM 18.04

[pemartins]

This is more out of curiosity because I don't really need them, but all of the default panel layouts except one are missing on my pc. My customized panel layouts are all there but from the default ones I have only gnome 2:

The previous time I checked they were all there but not today. It was a clean 18.04 install.
What could have happened?

[mdooley]

I have the same situation pemartins. Please see -

UM 18.04 mate tweak not working as it should

I have 18.04 installed on 3 laptops (one is a server) and a desktop. Only in the upstairs laptop server does MATE Tweak offer me the opportunity to select another layout. For instance on this laptop, I have working MATE Tweaks in both 16.04 and 17.10 but not in 18.04. All of these are fresh installs, not upgrades of any sort. I'm not a believer in upgrades from one version to the next. [image] This is 16.04-------------- [image] This is 17.10-------------- [image] and 18.04 displays abo…

This discussion from 2017 may have some bearing on our problem, although I don't quite get just why...

Mate Tweak has admin rights!?

I dug around a bit more, and the root access works via invoking /usr/bin/pkexec, which is part of the PolicyKit framework. It allows to run a process as another user, which based on certain policy settings can happen without being prompted. If I run pkexec /usr/lib/mate-tweak/install-mate-panel-layout directly from a terrminal, it would ask me to authenticate, yet MATE-Panel is apparently allowed to do that specific call without prompting the user. This is configured in /usr/share/polkit-1/ac…

I did fresh reinstalls on two laptops and only one, at this time, still has access to more than GNOME2. Does it have something to do with editing the menus with mozo?

[pemartins]

I did edit a menu recently, I unchecked the category “Education” so it wouldn’t show up. Could this be the root of the disappearing?

[mdooley]

I’m still trying to figure this out. Like you, I don’t think that this feature will be useful as far as I’m concerned however I am curious as to why it has happened.