I’m looking for a reliable way to log when my laptop is:
- powered down
- boots up
- goes to sleep
- wakes up
Currently I’m checking both the systemd-suspend and tlp systemctl services, but these don’t really feel very robust, and I don’t have TLP installed on all my machines.
Is there an easier way to do this, or a better systemctl unit that logs all the power states of my machine. Preferably laptop agnostic?
Laptop snippet so far:
journalctl --since -9days -u systemd-suspend -u tlp \
| grep -P "Finish|Start|Stopped" | sed '/.*Finished TLP.*/d;
s|Starting TLP.*|╭╴System Boot |;
s|Starting System Suspend.*|┤ · Sleep |;
s|Finished System Suspend.*|├ · Wake |;
s|Stopped TLP.*|╰╴Power Off |;' \
| sed -r 's|^(.*:[0-9]+)+:[0-9]+.*:(.*)| \1 \2 |'
Are you asking about uptime monitoring on a remote host, or the actual last state of the machine once X happens via logged info on the machine?
If the former, you can add a hook that pings somewhere before X action takes place.
For the latter, it should be in dmesg, both going not and coming out of different states.
I guess uptime monitoring of any host, with specific timestamps for when the system is suspended/resumed.
(Yes I understand that a server ideally shouldn’t sleep)
in your shoes i would use a loop to iterate through journalctl’s up/down sessions getting the first and last lines of each and then use awk to printout the timestamps and sed to add in power state changes.