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12.10 Black screen on boot after unplugging external monitor

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Here is my story: 1. I plugged an external VGA monitor to my laptor (Dell Vostro 3550) and configured dual display using System Settings/Displays. Everything worked well 2. I unplugged the external monitor, switched off my laptop and left my office 3. Being at home, when I turn on my laptop I get a blank screen on my LCD display. Ctrl+Alt+F1...F7 doesn't work. I assume that my primary display is still set to the external monitor, but I don't have any external monitor at home. How can I switch back to LCD?

Answers

A quick and dirty method

  1. Boot into recovery
  2. Select 'root'
  3. Remount root partition as writable
    • mount -o remount,rw /
  4. Backup, but remove your xorg.conf
    • mv /etc/X11/xorg.conf /etc/X11/xorg.conf.bak
  5. Reboot

Plan ahead

Do some research on Disper and see if it can ease your monitor woes once you've gotten back on your system. You might find this post informative.

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