Ubuntu 13.04, Acer 5750 and Suspend not working

Just apply the fix that appears in http://ubuntuforums.org/showthread.php?t=2121631&highlight=ping-wu

I’ve gotten the same problem. What I did to work around this problem:

Copypasta the next few lines and save.

Code:
#!/bin/sh
case "$1" in
        thaw|resume)
        echo 500 > /sys/class/backlight/intel_backlight/brightness
        ;;
        *)
        ;;
esac
exit $?

Finally, make it executable:

The script might be a little different depending on your hardware. If it does not work, just find out the path to your backlights interface.

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