Ubuntu – How to run script after resume and after unlocking screen

12.04autostartlock-screensuspendunlock

In Ubuntu 12.04 LTS, I would like to run scripts after resuming from suspend, and after unlocking my desktop. These need to run as my user, and with access to my $DISPLAY.

In particular, I would like to

restart nm-applet to work around bug 985028
show a custom notification using notify-send
possibly other stuff when I get these working

When I resume, scripts in /etc/pm/sleep.d/ are run, but they run as root, without knowledge of my screen and username. It might work if I hard-code my username and export the default DISPLAY :0 in these scripts, but that feels like a very ugly hack.

Scripts in ~/.config/autostart/xyz.desktop run after login, but they don't run after merely unlocking the screen after resume.

Is there a way to run scripts after unlocking the screen after a resume?

Best Answer

It looks like you have to hard code the username in the previous answer anyways, so here's a simple script for in /etc/pm/sleep.d if anyone is looking for a quick fix:

#!/bin/bash 
case "$1" in
    hibernate|suspend)
        sudo -u USERNAME env DISPLAY=:0 zenity --info --text "do stuff on suspend"
        ;;
    thaw|resume)
        sudo -u USERNAME env DISPLAY=:0 zenity --info --text "do stuff on resume"
        ;;
esac

Related Solutions

Ubuntu – Lenovo Ideapad s10-3 doesn’t resume from suspend

try uswsusp.

sudo apt-get install uswsusp

After installation, my IdeaPadS10-3 shows ...

$ sudo s2ram -n
Machine is unknown.
This machine can be identified by:
    sys_vendor   = "LENOVO                          "
    sys_product  = "S10-3           "
    sys_version  = "Lenovo                  "
    bios_version = "2ACN37WW  "

"Machine is unknown." But it worked by using `-f'(--force) option

sudo s2ram -f

Ubuntu – How to get a script to always run on resume in Lubuntu

The fact that the log contained /etc/pm/sleep.d/reset_panel resume suspend: Cant connect to display: indicates that no display is set, and you are trying to run a graphical program. When you're running pm-suspend from your session, the correct display was set probably by LightDM or whatever your display manager is. When it gets run automatically on resume, I assume it's getting run as the root user and not attached to a display. So you need to set the display variable yourself, like so:

#!/bin/bash
case "$1" in
   suspend|hibernate)
      #do nothing
   ;;
   resume|thaw)
      export DISPLAY=:0
      sleep 5 && lxpanelctl restart & #Delayed so the battery icon can finish wrecking shop.
   ;;
   *)
      exit 1
   ;;
esac
exit 0

The only draw back is that this won't work if you display isn't actually :0 That's the default, but it could change particularly in a multi-user setting.

Best Answer

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Ubuntu – Lenovo Ideapad s10-3 doesn’t resume from suspend

Ubuntu – How to get a script to always run on resume in Lubuntu

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