How To: Disable or Enable the Transient Multimon Manager (TMM) in Windows Vista

Posted by admin On January - 15 - 2009

Transient Multi-Monitor Manager or Transient Multimon Manager (TMM) is a cool Windows Vista Feature that simplifies the setup of display configurations on mobile computers.Windows Vista Transient Multimon Manager is targeted at improving the user experience of connecting and disconnecting external displays Transient Multimon Manager (TMM) can place a mobile computer display (for example, a laptop computer display) into clone view when a new monitor is detected.TMM is enabled by default in Windows Vista. TMM automatically finds external displays at boot, it can also remember settings of the same external display if you connect it later.If you are not using an external monitor, or don’t switch back and forth always then turn TMM off.This is the 2-3 second delay followed by a blank black screen as Windows Vista searches for monitor changes when you startup Vista.

To enable or disable TMM(Transient Multimon Manager) in Windows Vista just follow the steps given below:

Method 1: By Using Windows Vista Task Scheduler

Run task scheduler by clicking start button and then typing “task scheduler”
Browse to Task Scheduler Library > Microsoft > Windows > MobilePC
Click TMM in the list at the top-center
On the right pane click disable to disable the TMM feature in Windows Vista
Click enable to enable the TMM feature again in Windows Vista

Method 2: By Using Windows Vista Registry Editor

Open Windows Vista registry editor(regedit)
Navigate to this location Computer\HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\TMM
Click UseIViewHelper
Set the value data to 0 to disable TMM feature in Windows Vista.
If you want to re-enable TMM feature,set the value data to 1.
Click OK and reboot you computer

After you reboot you should notice no more unexpected flashing.

Note:TMM feature in Windows Vista is great if you often want to connect your PC to any external display etc, but if you never use one you can speed up your boot by a few seconds by disabling your TMM.

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