Panasonic CF-20 series, Operating Instructions And Reference Manual, Page: 71 / 179

Display Rotation
The screen display rotates automatically when this unit is the tablet or convertible mode.
Rotation Lock
The Rotation Lock button allows you to lock the screen display when this unit is the tablet mode.
1. Press the Rotation button (A).
You can switch automatic rotation ON/OFF by pressing the Rotation Lock button (A).
Alternatively you can switch automatic rotation ON/OFF by the following procedure:
1. Click (Notification) on the task tray, and then click (Rotation lock) or (Rotation lock).
N O T E
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When an external display is connected to the computer and the computer is rotated while in the “Duplicate” mode or “Extend” mode:
The screen display on the external display does not rotate.
The screen display on the internal LCD remains landscape, and does not rotate.
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To change the angle of the screen rotation manually, perform the following steps.
Right-click the desktop screen, and click [Display settings].
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While the display is rotated:
Do not use the Extended Desktop. The touchpad, touchscreen, or digitizer (only for model with digitizer) may not work properly.
Do not set the resolution larger than that of the internal LCD.
The computer's performance is slightly lowered.
The touchpad scroll functions do not work.
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When the display is rotated, the motion video may not be displayed correctly or the sound may be distorted. Return the display angle
to landscape.
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When you start up Windows and rotate the display right after signing in, the display may return to the previous state.
Then, the display returns to the rotated state. The similar situation will occur when you switch the user, computer resumes from Sleep-
/Hibernation and Windows is unlocked.