Granted, this isn't our issue per se, but there is currently an incompatibility with Ubuntu 13.04 (Raring Ringtail). The Broadcom drivers don't allow for ad-hoc mode at all, and there is currently no patch. Affected devices include various Asus and Acer netbooks (including Asus Eee PC 1225B).
Could you specify which broadcom driver in particular (i.e. take output of 'lsmod | sort' and trim it), and which kernel you've observed this problem on? There may be alternate drivers available.
If redmine is the proper venue, indeed yes, gotta mova on over. Besides, my understanding is that b43 is considered a legacy chipset now. Can look up the actual Broadcom chipsets where this problem occurs?
Agreed, bug reports should be done via Redmine. Our current practice is to use Github just for pull request discussions.
Also agree w/ .hc/eighthave, chipset driver incompatibilities w/ IBSS are out of our hands. Sadly, many netbooks, including our own fleet of Asus, do not support ad-hoc, and haven't since I started working at OTI :(
Also, just wanted to say thanks Griffin for finding this issue, which we have failed so far to document anywhere at all :)
It's good to know which hardware works and which doesn't...we should start a list!
Linux client now includes enough checks and warnings for incompatible drivers that I think this issue can be designated "dealt with," if not completely resolved.