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On my laptop (Toshiba Portege R705) the Mod4+P key combination toggles between different display modes: single monitor, mirror display, and extended display. I would like to disable this binding, because it can be annoying when pressed by accident. Moreover, there is already the Fn+F5 hardware key with the same functionality, so the binding probably comes from software. Unfortunatelly, I cannot find anything related in the Keyboard Shortcuts.

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up vote 2 down vote accepted

It appears to be related to the BIOS: see here and here.

Marius pointed this (here):

This is hardcoded in gnome-settings-daemon and can be disabled in gconf by setting


to false. This workaround probably has a nasty side effect of breaking your real video switch key, if you have one.

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This might be somehow related with this particular laptop, I don't remember having this issue on other hardware. – Adam Byrtek Apr 19 '11 at 21:22
Thanks for researching that. This is wrong on so many levels! – Adam Byrtek Apr 21 '11 at 21:03
I'm glad to help ;-) – desgua Apr 21 '11 at 22:07

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