Ubuntu shuts down on suspend?

I have ASUS GL552VW laptop with nvidia graphics card and driver nvidia-361 on uefi. Now the problem I am facing is , whenever the computer suspends(Either by clicking manually , or from a long idle ) the computer actually shuts down and restarts when I press keys.

I have tried the following options

1. Uncomment SAVE_VIDEO_PCI_STATE=true in /etc/default/acpi-support.

2. Change GRUB_CMDLINE_LINUX="" to GRUB_CMDLINE_LINUX = "acpi_sleep=nonvs".

But still it shuts down on suspend. When I click suspend , the login screen is seen momentarily and then the PC shuts down. And when I press some keys , its boots again showing the grub menu. What can I do?

Solution 1:

It's very strange and it may have worked only for me, but whenever this happens to me, I shut down the computer entirely (power off). Upon restarting, the computer suspends/resumes normally.