cant wakeup pc when linux does a shutdown command
 

i have a cron job that shutsdown my linux box at 1000
i need it to reboot at 2100
so i set a wake up alarm in the bios

now if i shutdown the pc then the wakeup alarm works

but if i let linux issue the shutdown command it decides to have a lay in and wont wake up

all i can think is when i do it manualy maybe its a soft powerdown and places the pc in a standby mode but the shutdown command must be doing a hard power off if that makes sense.

so the question is how do i tell my linux box to shutdown at 1000 as if i was at it or make shutdown to a standby, hell having it hibernate at 1000 and wake at 2100

shutdown has different options.

#shutdown -H +1000

will halt (not poweroff) after 1000 min

will try that when i get home thankyou

what does halt actualy do?

seems it was already a -h so have changed it to a -p will post how it goes at 2200 hours ish 2morro

just realised it was -h not -H damn linux and its case sensitive commands lol

changed it to -H

didnt work, the pc didnt shutdowwn just droped to a terminal

as i have said if i shutdown in the menu the bioss wake on alarm works

so is tthere a script thatwill shut it down like that

in this heat the pc has to shut down at 10am and i need it on at 2100 is linux simply incapable of doing this?

still cant find how to do this is it impossible