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Operating Systems Linux Red Hat command line tool to disable screen lock and/or screen saver Post 302566606 by cjcox on Thursday 20th of October 2011 04:43:43 PM
Old 10-20-2011
There's no portable way to do this. You can target a particular screen locker and often times they will have an option or way to send a message to the screen locker to stop locking. Some desktop screen lockers will look for particular power mgmt profiling to determine if they should lock or not.

If you want to disable it permanently, you should be able to do this in System -> Preferences -> Screensaver. Then you could manually lock your screen when you feel it is needed.

Since you're saying RHEL 5.4, you can send the gnome-screensaver a dbus message to inhibit locking with:

dbus-send --session --dest=org.gnome.ScreenSaver --type=method_call --print-reply --reply-timeout=20000 /org/gnome/ScreenSaver org.gnome.ScreenSaver.Inhibit string:"myshell" string:"I have no reason for doing this"

That command will return an integer string (cookie)... use that to UnInhibit

dbus-send --session --dest=org.gnome.ScreenSaver --type=method_call --print-reply --reply-timeout=20000 /org/gnome/ScreenSaver org.gnome.ScreenSaver.UnInhibit uint32:<the-integer-returned-from-the-inhibit>

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GNOME-SESSION-INHI(1)						   User Commands					     GNOME-SESSION-INHI(1)

gnome-session-inhibit - inhibit gnome-session functionality SYNOPSIS
gnome-session-inhibit [OPTION...] [COMMAND] DESCRIPTION
gnome-session-inhibit can inhibit certain gnome-session functionality while executing the given COMMAND. To achieve this, it calls the Inhibit() method of the gnome-session D-Bus API and creates an inhibitor. The inhibitor is automatically removed when gnome-session-inhibit exits. A typical use case is to prevent the session from going idle (and thus locking the screen) while a movie player is running. OPTIONS
-h, --help print help and exit --version print version information and exit --app-id ID The application id to use when calling the gnome-session Inhibit() method. If this option is not specified, "unknown" is used. --reason REASON A human-readable reason to pass along when calling the gnome-session Inhibit() method. If this option is not specified, "not specified" is used. --inhibit ARG ARG specifies the things to inhibit, as a colon-separated list. The possible values are logout, switch-user, suspend, idle, automount. If this option is used more than once, the values are combined. If this option is not specified, "idle" is assumed. --inhibit-only Do not launch COMMAND and wait forever instead SEE ALSO
systemd-inhibit(1) gnome-session GNOME-SESSION-INHI(1)

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