hi when i first installed deepin i could use the control centre that appears from the left of the screen. I have now updated it and cannot get the control centre to open. I tried from the apps list through launcher and from ascribing a command to a corner non of which work. I don't know if there is a command i can use from the terminal but trhe only way i can shut down now is with ctrl+alt+del. Any help would be appreciated as i like this system and would like it to develop into a reliable OS. Thank you ,Brian