LG LU20 User Manual page 63

Fn+F5:
Press the combination once to disable the touch pad, and press again to enable
the touch pad. (The touch pad initialization takes 1~2 seconds, so wait for the
Initialization to end before using the touch pad)
Fn+F7:
When the computer is attached to an external monitor, you can change the
display output location with Fn+F7 combination. You can switch to and from the
three types of display modes, LCD display only, the external monitor only, or both
at the same time.
Fn+Home:
The computer display becomes darker.
Fn+End:
The computer display becomes brighter.
Fn+F8:
Enbale/disable Auto Sound power management (battery mode only). Refer to
Battery Miser Help.
Fn+F9:
Enable/disable Auto Brightness control. Refer to Battery Miser Help.
Fn+Esc:
Maximum power-saving mode. (when OSD is installed)
Fn+F10 : System information
Fn + ScrLk/Num Lk: Number lock
Fn+Delete : Insert
Fn+↑: Scroll Up
Fn+↓: Scroll Down
Fn+→ : Volume Up
Fn+← : Volume Down
Fn+F11: F12
Fn+PgUp : Prt SC
Fn+PgDown : Pause
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