I have lost the to me essential hibernate functionality after upgrading ubuntu. This is normal, but unfortunately I could not reenable it this time.
I tried these three previous solutions:
- setting 3 entries in
- setting two entries in
- enabling two entries in
/var/lib/polkit-1/localauthority/10-vendor.d/com.ubuntu.desktop.pklaplus restarting the menu/indicators and rebooting
but no hibernation option appears.
Some additional info:
sudo pm-hibernateoutputs nothing and appears to do nothing.
s2disk: Could not open the snapshot device. Reason: Operation not permitted
I guess this is my key clue, but I didn't find any obvious explanations/solutions when googling that - I'm afraid I'm ignorant of the meaning.
There is no change to
dmesg output and
/var/log/pm-suspend.log does not exist after running pm-hibernate.
The machine is capable of hibernating under ubuntu 15.04 and earlier - the above options worked previously.
(I am aware this is a potential duplicate of this question, but wanted to add more detail.)