I am using Ubuntu 16.04.3 LTS 64 bit. When I press the 'Suspend' button, it goes to suspend but immediately resumes again without me pressing any other device. And what's worse is that when it resumes, the monitor remains in sleep and pressing keyboard buttons does not seem to have any effect and the only way I seem to be able to start working is by pressing the physical restart button on the system box (which of course forcefully restarts the PC). How do I fix this?
Suspend does not turn off your computer.It puts the computer and all peripherals on a low power consumption mode.Hibernate saves the state of your computer to the hard disk and completely powers off. When resuming, the saved state is restored to RAM. For suspending you can just close your Lid ,that way it wont restart !
you can also try this Go to /etc/defaults/grub, change value of GRUB_CMDLINE_LINUX_DEFAULT="quiet splash acpi_sleep=nonvs"
Then run: sudo update-grub