[Xfce-bugs] [Bug 11491] New: xflock4 does not turn off screen due to lack of sleep

[bugzilla-daemon at xfce.org]

https://bugzilla.xfce.org/show_bug.cgi?id=11491

            Bug ID: 11491
           Summary: xflock4 does not turn off screen due to lack of sleep
    Classification: Xfce
           Product: Xfce4-session
           Version: 4.10.1
          Hardware: Other
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: Medium
         Component: General
          Assignee: xfce-bugs at xfce.org
          Reporter: chris.bainbridge at gmail.com
        QA Contact: bjt23 at cornell.edu
                CC: benny at xfce.org, nick at xfce.org

As noted at http://www.shallowsky.com/linux/x-screen-blanking.html calls to
"xset dpms" need to be prefixed with "sleep 1":

    will blank the screen (or activate the screensaver program, if you're using
    one) after a delay of one second. You need the delay because X gets a
little
    confused about the order of events; it will blank the screen but immediate
    un-blank it, thinking the activity of your typing the command happened
    recently enough to come out of screensaver mode.

    sleep 1; xset dpms force off

    will turn the screen OFF after a delay of one second. You can also use
    standby, suspend, or on instead of off.

Downstream bug report: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=776674

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