Blacklisting all of the Linux Realtek wireless drivers and using ndiswrapper to install the Windows XP Realtek driver (32-bit) solves the problem.
The Linux driver is problematic. Bug has not been fixed! -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/777490 Title: Wireless stops working when resuming from standby To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/777490/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs