This week I switched to #! (Crunchbang) because my Ubuntu was getting slow.  I love the speed and was very happy with the wifi because it had the b43 driver working by default.  Except, I could not get on my network after the most recent upgrade, but I found a work-around after a day of reading forums.  Surprisingly, it’s not too complicated!  You just need to create a conf file for b43 to use PIO and it will not through a DMA error anymore… my hardware is: Broadcom Corporation BCM4312 802.11b/g LP-PHY [14e4:4315] (rev 01).  This is the only line you should need.

sudo echo "options b43 pio=0 qos=0" > /etc/modprobe.d/b43.conf

Reference: This article from Ubuntu Forums.

One Response to “#! Statler – b43 driver fix.”

1. dave says:

   February 15, 2012 at 6:32 am

   Hi,

   I tried this but the message came

   permission denied?

   $ sudo echo “options b43 pio=0 qos=0″ > /etc/modprobe.d/b43.conf
   bash: /etc/modprobe.d/b43.conf: Permission denied

   Please why would that be so?

   thanks

   Reply