Hi..
I zeroized the device.....all the problems still exist....
please help me...

Most probably a hardware issue then...Nokia Care beckons

Hi,

It looks like an accelerometer hardware problem.

I experienced some strange behaviors like this recently probably caused by an accidental drop of my phone. I had to lock the phone in portrait mode to use it...

By using a level app and the sensor galery I noticed a constant shift of -90° on the X axis. I don't know if it was a calibration issue or if the accelerometer could have made a rotation in the phone .

BTW, as I didn't want to use the Nokia care services, I manage to fix it by patching sensord. I added a constant shift of the X axis in the libaccelerometeradaptor and now everything is working fine again.

Can you install the sensor galery app and told us what results the QAccelerometer sensor gives you when your phone lies flat on a table ? The level app can help too...

https://projects.developer.nokia.com/sensorgallery

try the compass and rotation from Harmattan API Showcase.
It gives the rotation/accelerometer sensor 'x' and 'y' readings on top. Tilt the device, If it gives same sign of readings for two positions(top/down or left/right), then there is a sensor issue.

Note: Did the temperature in your city change drastically before this issue. My N950 sensor seems to give proper readings only at low temperatures(<15C). As a result when the climate is warm, i usually have similar issues as yours(orientation and swipe to close not working properly)