On 07/20/2010 03:18 PM, Harry Bullen wrote:
Hey, I've been using a Broadcom BCM4312 on Ubuntu 10.04 kernel 2.6.32-23. I found a way to crash the machine and wanted to know if it was a known problem and if so is there a solution. If not I'd like to report this as a bug. I first join an existing ad-hoc network and and assign myself an ipv4 address. Then I use tcpdump or wireshark to listen to traffic in promiscuous mode. Finally I generate I traffic between two other computers on the same ad-hoc network by having one ping the other. At this point the system freezes up immediately (including ssh sessions and it cannot be pinged) and I have to hold down the power button to reboot it. If I use an AP, don't put the card in promiscuous mode (when using tcpdump or wireshark) or don't generate traffic between other computers the system doesn't crash.
Is this a crash or a freeze? A crash would provide a crash dump, but a freeze does not and they are harder to debug. With a KDE desktop, it is possible to switch to a logging console to capture whatever info is available. Is this possible with Gnome? Are you using a standard kernel or one you built yourself? If the former, could you please provide the configuration? It should be found in /proc/config.gz. If you are compiling yourself, then select CONFIG_DETECT_SOFTLOCKUP and CONFIG_DETECT_HUNG_TASK in the Kernel Hacking section.
Other issues that may or may not be related. The wireless card sometimes switches between eth1 and eth2 after a reboot (I haven't seen a pattern in this.) When sniffing traffic on a wireless network using an AP I only see traffic that is broadcast or sent to me, even-though I am in promiscuous mode.
The naming should be controlled by udev according to the rules in /etc/udev/rules.d/70-persistent-network.rule. At least it works that way on my system.
I have installed b43-fwcutter via: apt-get install b43-fwcutter. But this did not appear to have any effect.
As that package only installs the program that extracts firmware from a Broadcom driver, there is no reason to expect it to make a difference.
I will try to duplicate your result. Larry _______________________________________________ b43-dev mailing list [email protected] http://lists.infradead.org/mailman/listinfo/b43-dev
