
Chapter 3: Batteries and Power Management
Wake up from Suspend Mode, or Suspend With Radio Off Mode
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Psion Mobile Devices Developers Guide
3.4 Wake up from Suspend Mode, or Suspend With Radio Off Mode
When one of the following occurs, a computer that is in suspend mode, or suspend with radio off mode,
wakes up:
• The device is connected to external power.
• A USB peripheral is connected.
• The battery is inserted.
• The battery door is closed.
• The touch screen is touched.
• Suspend mode only: The WWAN radio receives an incoming voice call, or it receives SMS or IP
data packets.
• An expansion port, controlled through the HDK, is connected.
Not all of these wake-up sources are available on all Psion computers. Consult the user manual for your
computer to find out which features are on your device.
3.5 EP10 Power Options Registry Settings
The following registry settings on the EP10 control the appearance and behaviour of the Suspend dialog:
HKEY_LOCAL_MACHINE\Drivers\BuiltIn\PMDrv\PBC
Value Name Value Type Default Description
DlgEnabled REG_DWORD 1 Must be enabled to make the rest of the options available.
The following settings are possible:
DlgShowDelay REG_DWORD Length of time (in milliseconds) that Power must be held
before the Shutdown dialog is displayed (minimum
2000 ms).
DlgShowTimeout REG_DWORD 0 Length of time (in milliseconds) that the Shutdown
dialog is displayed before the highlighted menu item is
automatically activated.
The following settings are possible:
DlgDefaultAction REG_DWORD 0 Shutdown menu item that is highlighted when the
dialog opens.
The following settings are possible:
Value Description
0 Disable
1Enable
Value Description
0 Disable
≥5000 Duration in ms
Value Description
0 First item on the list
1 Second item on the list
2 Third item on the list
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