I'm running ubuntu 12.04. After turning my desktop off for a couple of days, I lost internet connection.
I am new to linux, and I'm not sure how to solve this problem.
I brought Dell Inspiron N5050 few months back. from day 1 i am getting problem with wired connection, i am able to use web browser for few minutes then all of the sudden i lost internet connection but i don't know why transmission is still able to download torrent from internet.
Ffter some experimens i lost internet connection.
I tried to install on Centos with gnome additionally KDE
yum groupinstall "KDE Desktop"
but i had few issues to switch to KDE
so i decided to remove KDE.
yum groupremove "KDE Desktop"
But after reboot, i lost connection to internet and NetworkManager icon from top pane.
I used wifi connection (running out of the box on k