[junxuan]

sorry for the lack of information, i didnt know what was needed.

you can't just say: it don't work, how do i fix...well, you CAN say it
but we can't fix it by guessing:

did it work using the live CD?

no

did it work during install? (there is a place, as far as i recall) to
check networking during install..)

it gave an error. i cant remember exactly what it was but it is more or less about openSUSE unable to find the network interface

did you, during install, elect to update your system? (that is, was
there a quite long period of downloading, unpacking and installing
from online sources)

nope

when you say "wired connection" what do you mean? that is, is your RTL
8101 plugged into a cable box, ADSL modem, router, outlet built into
the wall or what?

it is directly connected to my router.
I have tested with multiple cables, and other computers.


did you, during install, elect DCHP?

don't remember doing so.

if router, have you configured the router to let you in?

nope. no MAC filtering what so ever.

do you need to adjust your (or your router's) firewall?

give us some hints, please..