How to set low power warning at 30%

[Cedric]

Before I try, can you have a look at this. they have the same Unable to init server: Could not connect: Connection refused

Synaptic stopped working

On one of my PCs Synaptic stopped working. The Zorin installer still works fine. It sees Synaptic, so I removed Synaptic and reinstalled it. Still not able to launch Synaptic. I tried a couple of reboots. Still no change. From the Main menu editor, I found Synaptic under System tools and found that the command line code is: synaptic-pkexec When I entered sudo synaptic-pkexec the error returned is: No protocol specified Unable to init server: Could not connect: Connections refused As I searc…

and I understand xhost +SI:localuser:root works only until the next system reboot.