Till yesterday, the hibernate option was enabled and working perfectly fine.
Today morning, I have extended the root partition by adding some extra free space to it. I used the gParted tool in the Ubuntu live session for doing this.
After extending the root partition, I see the hibernate option not getting displayed in the system's shutdown-menu.
PS: I have tried the guide at this link. But, it didn't work.
gparted
? In particular, make sure that your swap partition is still larger than your total RAM.