A friend is having the same problem with an rt2500 in a slightly different model of Averatec laptop.
Also, I rebuilt the rt2500 driver from the source package, and there is no improvi]ement. -- Failure to obtain IP with DHCP on Averatec laptop with rt2500 https://launchpad.net/bugs/60461 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs