X220 Trackpad curser movement with Ethernet plugged in and with VGA connected to projector

Thre are many issues discussed about trackpad problem. My problem comes in the trackpad when X220 is connected to Ethernet port. The curser is not stable and it jumps aout 1/2 cm right and left withlout any figer movement, It vibrates on its own when only finger is placed on the touchpad. This does not happen when Ethernet port is diconnected even with 90w adapter or 65w adapter plugged in. It comes with Ethernet only.
The same preoblem comes again when VGA port is connected to Projector. In my case problm has no affect with any power adapter.(90 or 65 w) plugged in.
This is so problametc that simple tasks of selection is delayed or wrong selection is made.
Need Help/Solution anyone.
Thanks,
Installed all latest drivers availabe end March 1012 along with trackpad driver (15.3.39.1)
Model ThinkPad X220 (4286-CTO)
Core i7 2.8 Ghz
8 GB RAM
160 GB Intel SSD
Finger Print Reader
HD Camera, 720p
Intel Centreno Advance N 6205 (2x2 Antenna) WiFi
IPS Display
~
Haider

Hello Haider1223 and welcome to Lenovo community,
You have already updated all the system drivers, usually updated driver version of UltraNav resolve the issue.
Kindly update the BIOS and check if the issue gets resolved.
http://download.lenovo.com/ibmdl/pub/pc/pccbbs/mobiles/8duj15us.exe
If the issue continues then you need to reinstall the Operating System.
Best Regards,
Tanuj
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X220 Trackpad curser movement with Ethernet plugged in and with VGA connected to projector

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