Sleep mode doesn't work (at least not very long)

[TheWachowski]

Hi,

when I send my system to sleep mode it immediately wakes up again.

I already disabled wake on lan in BIOS and wake for network access in system/preferences. Plus, as written in some posts, I enabled ErP in BIOS, but nothing helped.

What else should I try to do?

 

[matony]

Try to find clues in your console log. There should be an entry what caused the end of low power - or prevented it.