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How to fix a major conflict of Firefox with LG monitor running Dual Smart screen control.

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PC: Dell Dimension E510 with MS windows XP professiona, Version 2002, Service Pack 3

     Intel(R), Pentium (R) D CPU 2.8 GHz, 1.0 GB Ram. 

I have a new 23" LG monitor (23EN43T). LG's software for managing screen displays is called Dual Smart Solution, which works great except with Firefox! The Firefox screen immediately goes to more than 100% of the available screen space. I can't even exit Firefox without using Cntrl-Alt-Delete. I then uninstalled & reinstalled Firefox, but that didn't solve the problem.

 To get around this problem I have to use Internet Explorer.
PC: Dell Dimension E510 with MS windows XP professiona, Version 2002, Service Pack 3 Intel(R), Pentium (R) D CPU 2.8 GHz, 1.0 GB Ram. I have a new 23" LG monitor (23EN43T). LG's software for managing screen displays is called Dual Smart Solution, which works great except with Firefox! The Firefox screen immediately goes to more than 100% of the available screen space. I can't even exit Firefox without using Cntrl-Alt-Delete. I then uninstalled & reinstalled Firefox, but that didn't solve the problem. To get around this problem I have to use Internet Explorer.

Ausgewählte Lösung

Firefox may be restoring the last used window dimensions based on a no-longer-relevant monitor configuration. You could try removing a settings file and see whether Firefox better detects your setup on the next restart.

With Firefox closed, open your current Firefox settings (AKA Firefox profile) folder. Paste this into the Search box on the Start menu or in the address bar of Windows Explorer:

%APPDATA%\Mozilla\Firefox\Profiles

If you find multiple folders, open the one that was most recently updated.

Rename localstore.rdf to something like localstore.old (in case you want to recover it later)

Restart Firefox. Does it position itself more logically?


By the way, you should be able to exit Firefox "blind" using either of the following keyboard combinations:

  • Alt+F4 (general "close window" combination on Windows)
  • Alt+F, then X (keyboard shortcut for File > Exit)
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Ausgewählte Lösung

Firefox may be restoring the last used window dimensions based on a no-longer-relevant monitor configuration. You could try removing a settings file and see whether Firefox better detects your setup on the next restart.

With Firefox closed, open your current Firefox settings (AKA Firefox profile) folder. Paste this into the Search box on the Start menu or in the address bar of Windows Explorer:

%APPDATA%\Mozilla\Firefox\Profiles

If you find multiple folders, open the one that was most recently updated.

Rename localstore.rdf to something like localstore.old (in case you want to recover it later)

Restart Firefox. Does it position itself more logically?


By the way, you should be able to exit Firefox "blind" using either of the following keyboard combinations:

  • Alt+F4 (general "close window" combination on Windows)
  • Alt+F, then X (keyboard shortcut for File > Exit)