I have Kubuntu 16.04 64-bit installed on my HP Pavilion 17-f000 Notebook. I've tried the steps from the ubuntu 16.04 wiki, but the
sudo pm-hibernate terminal command did nothing and creating the
/etc/polkit-1/localauthority/50-local.d/com.ubuntu.enable-hibernate.pkla file with these contents also had had no effect:
[Re-enable hibernate by default in upower] Identity=unix-user:* Action=org.freedesktop.upower.hibernate ResultActive=yes [Re-enable hibernate by default in logind] Identity=unix-user:* Action=org.freedesktop.login1.hibernate;org.freedesktop.login1.hibernate-multiple-sessions ResultActive=yes
I have 5.8GiB ram, 7.5GiB swap partition, and suspending to ram works fine.