I have a problem with shutting down my systems. When I shutdown my laptop everything looks normal but after few seconds it powers on by itself. I tried to shut it down through terminal with "shutdown -h now" and it worked but only on Arch in Ubuntu with "shutdown -hH now" or "shutdown -H now" it hangs on spash screen. I also looked for some "wake on LAN" BIOS entries (as those are mentioned to cause that problem) but I don't have those.
How can I fix my distros to be able to shutdown distros form DE's menu without using terminal ?