linux mint 15 mate thinkpad t420s laptop lid closing suspend instead of blank

sudo nano /etc/acpi/lid.sh
comment out . /usr/share/acpi-support/screenblank

http://lineatatime.blogspot.ca/2013/06/linux-mint-15-suspend-when-laptop-lid.html

http://superuser.com/questions/466899/mint-13-does-nothing-when-laptop-lid-is-closed