Ultranav doesn't follow Portrait mode orientation

[axur-delmeria]

I'm currently running Windows 7 on an X220 with an Eizo MX220W LCD monitor attached.

I intend to use the monitor as my primary display (laptop screen is off) and in portrait mode so I can read an entire page without scrolling.

However I encountered an issue with the Trackpoint and touchpad.

Config 1: External monitor only, in Portrait mode; laptop display is turned off
Trackpoint and touchpad behavior: moving to the left moves the pointer up, moving to the right moves the pointer down. In other words, they act as though they're stuck in Landscape mode (rotated 90 degrees).
USB mouse behavior: works normally

Config 2: Laptop display enabled, set as primary, in Landscape mode; external monitor is enabled, and in Portrait mode
Trackpoint and touchpad behavior: works normally
USB mouse behavior: works normally

Config 3: Laptop display only, in Portrait mode; external monitor is disabled
Trackpoint and touchpad behavior: same as Config 1
USB mouse behavior: works normally

So, for some reason, the Trackpoint and touchpad don't like a primary monitor in Portrait mode.
Most likely it's an issue with the Ultranav drivers, since the USB mouse (which uses the standard Windows driver) works normally in all cases.

Has anyone encountered the same issue? If yes, have you found a solution?

[axur-delmeria]

I found the solution, thanks to superuser.com.

There's a registry key that controls autorotation behavior. By default it's set to:

Code: Select all

[HKEY_LOCAL_MACHINE\SOFTWARE\Synaptics\SynTPEnh]
"AutoRotationFlag"=dword:0000000b

You have to change the value to a hex value of 00000000. You need Administrator privileges to change it.

Code: Select all

Windows Registry Editor Version 5.00

[HKEY_LOCAL_MACHINE\SOFTWARE\Synaptics\SynTPEnh]
"AutoRotationFlag"=dword:00000000

To apply the changes, you can either logout then log back in, or just terminate the TPEnh.exe process and restart it.

In hindsight, it appears that the default setting was chosen under the assumption that the primary screen would always be the built-in display, and should not be rotated.