Public bug reported:
I am on a macbook (4,1), with the following wireless card:
02:00.0 Network controller: Broadcom Corporation BCM4321 802.11a/b/g/n
(rev 03)
I'm also running natty with everything (presenty) up-to-date. When I
unplug my laptop from a power supply, the wireless goes away after about
2-3 seconds (or less). If i run :
sudo iwconfig eth1 power off
after this happens, my wireless comes back up. It seems to be something
wrong with power management for this card and this hardware?
uname -a:
Linux Macbuntu 2.6.38-6-generic #34-Ubuntu SMP Tue Mar 8 14:15:57 UTC
2011 x86_64 x86_64 x86_64 GNU/Linux
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/734189
Title:
Wireless card turns off when laptop power cable is unplugged
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