I have a weird issue that I can not suspend my laptop which is running on Zorin OS 16.
I don't have any other OS on my system and also I have updated Zorin and its packages to the latest versions. My laptop has hybrid graphic cards (integrated Intel + Nvidia GTX1050) and I have shut down using the Nvidia driver by putting this command on the grub config file (/etc/default/grub):
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash nouveau.modeset=0"
Zorin doesn't suspend when I hit the suspend button from the top panel or even when I enter this command on the terminal:
sudo systemctl suspend
Although I turned on suspend on closing the lid, it doesn't work.
When I try to suspend, it goes on a black screen but after a couple of seconds (2 or 3s), the display turns on again and shows me the login screen.
I have installed uswsusp and this is the only way that I can suspend my system properly by using this command on the terminal: