This seems to have fixed itself (perhaps through an update).
** Changed in: b43-fwcutter (Ubuntu)
Status: New = Invalid
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Wireless controller does not work in karmic - Dell Mini 9 - Broadcom
Corporation BCM4312 802.11b/g [14e4:4315] (rev 01)
https://bugs.launchpad.net/bugs/445788
You
Look here:
https://bugs.launchpad.net/ubuntu/+source/bcm43xx-fwcutter/+bug/379052/comments/8
It worked for me.
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Wireless controller does not work in karmic - Dell Mini 9 - Broadcom
Corporation BCM4312 802.11b/g [14e4:4315] (rev 01)
https://bugs.launchpad.net/bugs/445788
You received this bug
** Attachment added: Dependencies.txt
http://launchpadlibrarian.net/33248865/Dependencies.txt
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Wireless controller does not work in karmic - Dell Mini 9 - Broadcom
Corporation BCM4312 802.11b/g [14e4:4315] (rev 01)
https://bugs.launchpad.net/bugs/445788
You received this bug notification
Try to install bcmwl-kernel-source
--
Wireless controller does not work in karmic - Dell Mini 9 - Broadcom
Corporation BCM4312 802.11b/g [14e4:4315] (rev 01)
https://bugs.launchpad.net/bugs/445788
You received this bug notification because you are a member of Ubuntu
Bugs, which is subscribed to
bcmwl-kernel-source seems to already be installed.
--
Wireless controller does not work in karmic - Dell Mini 9 - Broadcom
Corporation BCM4312 802.11b/g [14e4:4315] (rev 01)
https://bugs.launchpad.net/bugs/445788
You received this bug notification because you are a member of Ubuntu
Bugs, which