My laptop is Lenovo T400, about 4 years old, and my OS is Ubuntu 12.04.
When I restart my Ubuntu, the internal wireless adaptor works fine and can find and connect to our wireless network.
Then if I lift and move the laptop a little, the internal wireless adaptor becomes not working, i.e. it doesn't find any wireless network nearby, and the wireless icon (below the screen and showing if wireless adaptor working) becomes off (lose green light).
Then if I restart Ubuntu, the internal wireless adaptor works again.
What are some solutions to my problem?
I have suspected that some wire connecting the internal wireless adaptor might have become disconnected. But a few months ago, I opened my laptop, and didn't find wires that have loose ends, and I detached and reattached all the wires connecting to the wireless adaptor.
Also if the problem is indeed because of some wires, will it then be possible that restarting OS will make the adaptor working again?
Will a USB wireless adaptor help to solve my problem? Such as this one Edimax EW-7811Un Network adapter - Hi-Speed USB?
Thanks and regards!