I would like to understand what is wrong with my linux system (or hardware). Sometimes I lose my session when the system is suspended, instead, it restarts then instantly without restoring anything.
I managed to find out the following:
-
pm-suspend: worked alwaysecho -n mem >/sys/power/state(invoked bypm-suspend): worked always
- suspension when closing the lid: works most of the time
- suspension after x minutes idling: does crash most of the time
systemctl suspenddoes work sometimes, sometimes is crashes my session./lib/systemd/systemd-sleep suspend, which is invoked bysystemctl suspend(as it seems) works just as often as the command above
What's the difference between those commands/actions? why is pm-suspend reliable but the others are not? How can I get a verbose log?
Could someone explain me how sending the system into suspend mode works currently? I am on Ubuntu 21.10 but I guess a general explanation would be fine too.
I just need a hint to get started somewhere :)
