Editing /usr/lib/pm-utils/power.d/wireless as described in https://bugs.launchpad.net/ubuntu/+source/linux/+bug/651008/comments/9 did indeed fix this permanently on my MacBook 4,1 with a Broadcom Corporation BCM4321 802.11a/b/g/n (rev 03) controller. WLAN throughput is now at normal levels (around 7 to 8 Mbit/s effective at 54 Mb/s nominal) even on battery power.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/651008 Title: Regression in wireless performance under Maverick when on battery power (broadcom) -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
