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I have a laptop running Mint 13.

I have it hooked up to a 30" monitor and have no use for the laptop being open, so I put it on a shelf and close it. When I do that, the monitor goes blank. The power manager does not have an option for doing nothing when the lid is closed. The options are "Blank Screen", "Suspend", and "Shutdown".

Is there a way to make the laptop not go to a blank screen when the lid is closed?

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It sounds the simplest solution would not to fully close the laptop case. – Ramhound Aug 27 '12 at 13:10
1  
@Ramhound Yeah. I was looking for a better solution than that. – ewok Aug 27 '12 at 13:44

This worked for me on a Dell Inspiron 1501 with Linux Mint 13 Mate 32bit.

  • Open Configuration Editor (mateconf-editor)
  • Goto: apps/mate-power-manager/buttons
  • Change lid-ac from "blank" to "nothing"
  • Open up Screensaver Preferences / Power Management at the bottom.
  • Click make as default (Make sure "When laptop lid is closed" to "do nothing")
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I tried this. it allows the "Do Nothing" option to show up in the menu, but it still blanks the screen when the lid is closed. – ewok Aug 29 '12 at 18:24
    
works on HP-5330m as well ...thx – equivalent8 Dec 6 '12 at 9:16
    
I still didn't get the "Do Nothing" option in the screensaver->power management settings. When I close the lid, the external monitor switches off; but waggle the mouse/press any key and it comes back again. – user190759 Jan 17 '13 at 17:57

The problem is caused by design of the Lid close event handling script of Mint 13. For whatever ('*') state, the instructions execute a 'screenBlank' instruction set. It's clear that it's an assumption they had taken for granted. The following is just a workaround.

Note: You might have to use sudo or be root to perform this.

Open the file /etc/acpi/lid.sh There find the line . /usr/share/acpi-support/screenblank Comment that out with putting # before it. The issue should be resolved

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