Is “sleep” hibernate or suspend?
How can I tell the difference? The button says "Sleep". I don't see anything like "Power Settings" in System Settings.
Also, is this triggered by manually putting to sleep or by for example closing a laptop lid?
It's a PC, not a laptop. I click the "Sleep" button in the Application Launcher.
I moved to Tuxedo from Kubuntu after having MASSIVE problems there, but I honestly can't remember if I was using the Sleep feature.