Thread: Very creative BCM4312 issues, please help!

unlike people wireless problems, wireless appears work fine, starts on boot, still works after suspend/resume, works wep , wpa, etc.

problem though computer plagued kernel panics, ranging once every other day or as once every couple minutes. suspect wireless driver problem 3 reasons:

1. best of memory panics happen when wireless enabled.
2. panics happen more more wireless connection being utilized (the panics every couple minutes happened when using transmission download large torrents, continued, albeit every 5-10 minutes when put speed limit on download)
3. wireless driver thing can think of in kernel space every time i've had panic.

computer dell latitude d630. wireless controller broadcom corporation bcm4312 802.11a/b/g (rev 01). had been using broadcom sta driver in ubuntu repos (bcmwl-kernel-source). i'm using network manager don't think anywhere near kernel space.

decided try , fix problem compiling newest bcmwl driver (5.10.91.9.3) source (http://www.broadcom.com/support/802.11/linux_sta.php). seemed fudge process, , now, not still have panics networking modules in bungle.

build process went smoothly until got these instructions:

code:

3: remove other drivers broadcom wireless.    there several open source drivers used drive broadcom 802.11  chips such b43 , ssb. if of these present need removed before   driver can installed.  previous revisions of wl driver need  removed.    # lsmod  | grep "b43\|ssb\|wl"    if of these installed, remove them:  # rmmod b43  # rmmod ssb  # rmmod wl    blacklist these drivers , prevent them loading in future:  # echo "blacklist ssb" >> /etc/modprobe.d/blacklist.conf  # echo "blacklist b43" >> /etc/modprobe.d/blacklist.conf    4: insmod driver.    if running previous version of wl, you'll want provide  clean transition older driver. (the path previous driver  /lib/modules/<kernel-version>/kernel/net/wireless)    # rmmod wl   # mv <path-to-prev-driver>/wl.ko <path-to-prev-driver>/wl.ko.orig  # cp wl.ko <path-to-prev-driver>/wl.ko  # depmod  # modprobe wl    otherwise, if have not installed wl driver this:    # modprobe lib80211  # insmod wl.ko    wl.ko operational.  may take several seconds network manager  notice new network driver has been installed , show surrounding  wireless networks.

long story short, not able tell whether old wl modules still around. not able find in /lib/modules/2.6.31.17-generic/kernel/net/wireless/ , systemwide searches revealed nothing.

copied newly compiled wl.ko directory , added appeared work.

problem is, next time restarted, wireless wasn't working , "lsmod | grep "b43\|ssb\|wl" revealed whole slurry of modules hadn't before, including both b43 , ssb, not wl!

rmmoded both b43 , ssb , loaded lib80211 , wl.ko , wireless worked again. measure blacklisted b43 , ssb wouldn't load on next restart.

tried test see if panics fixed , booted transmission see how long work for, paniced after 5 minutes or so. either newest sta driver doesn't fix problem, or didn't correctly install newest one.

things got worse when rebooted panic. not wireless not working wired networking disabled. unblacklisted b43 , ssb , restarted.

networking worked again wireless said "device not ready" in nm-applet. rmmodded b43, made wireless option in nm-applet disappear. rmmodded ssb. did modprobe lib80211 , modprobe wl , voila, wireless comes online.

cannot life of me figure out why b43 , ssb not used before, not blacklisting them disables wireless. furthermore, can't figure out why wl.ko not loaded on boot.

appreciate insights people might have on i've messed things , go here. have feeling though might time call things quits , fresh install...

love ubuntu, these frequent undiagnosable crashes starting old. not bad enough use windows, maybe other distro plays nicer setup!

it sounds me missing source header files. have tried re-compiling broadcom driver after entering command?

code:

sudo depmod -a

there should readme.txt @ broadcom's website gives specific instructions, , remember working flawlessly 4321ag broadcom under jaunty 9.04.

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