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I'm running Xubuntu 13.10 headless via ssh and tmux. Whenever I leave the machine, making sure to have a tmux session opened, it will invariably crash after about an hour. The sign it has crashed is that top says that Xorg is hogging 99% CPU.

As the machine is headless, I cannot do the simple xset -dpms that has been suggested many times already. How do I remove every power saving feature that could put the computer to sleep/suspend/hibernate mode when running headless?

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    Editing logind.conf can help with some off the stuff (I did an answer a while ago here - look for the manual page link) - but does top show a particular process hogging the CPU?
    – Wilf
    Dec 10, 2013 at 18:22
  • top says Xorg takes 99% of CPU when it crashes. That's how I know it crashed, because I have no other visual cue.
    – CHM
    Dec 10, 2013 at 18:26
  • @wilf I've changed the options in logind.conf as you suggested. Let's hope this works!!
    – CHM
    Dec 10, 2013 at 18:46
  • @wilf my computer still crashed :/
    – CHM
    Dec 10, 2013 at 22:23
  • Don't know then :-( - apart from disabling the login screen, I did not have any trouble on my remote box....
    – Wilf
    Dec 11, 2013 at 10:35

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