When responding to requests, open a new post rather than update your original.
Open a terminal - click the "Windows" button and type
term - your window manager should offer a "terminaal" button as a match; click it. This will open what looks like a DOS window. Type the following commands
exactly (or better cut-and-paste) and post all the output here.
Code:
set | grep -i desk
lsb_release -a
lspci -vv | grep -i -A 10 net
This should give us enough info on your envireonment to at least start to help.