Ubuntu 9.10 (Karmic Koala) and Broadcom BCM4312

words by Brian Racer

Ubuntu 9.10 (Karmic Koala) launched today and I figured it was time to do an install from scratch onto my Dell D830 Latitude laptop. Everything went quite smoothly but when it started up I noticed two issues:

Problem 1: No wireless

I know the Broadcom card inside the laptop isn’t the greatest, but the last two Ubuntu releases it has worked out of the box. The following command enabled the card after a reboot:

sudo apt-get install bcmwl-kernel-source

Problem 2: Really slow DNS lookups (because of IPV6)

As documented on Launchpad, there still doesn’t seem to be an official fix. Strangely disabling IPV6 in /etc/sysctl.conf didn’t solve anything, however disabling it in Firefox at least fixes the issue in the browser. Just type about:config in the address bar, and set network.dns.disableIPv6 to false.

Otherwise things seem to be working well, although I don’t understand why they stick with a color scheme that looks like mud.

  • http://www.denis.lemire.name Denis Lemire

    Thanks for the heads-up on the Broadcom wireless. Ran into the same issue… The mentioned fix resolved it without any further trouble.

  • Jonathan

    Thanks a lot! The issue with wireless was the same with vostro 1320 and that solved my problem.

  • Bob

    Thanks for your suggestion – fixed my Acer Aspire 5720 too. Annoying that it worked before but not by default on 9.10!!

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  • Pallav

    Tried this several times on HP Pavilion dv4t. No luck :( . Has anyone had any luck with any Pavilions?

  • axl

    This was only part a partial solution for me — I followed the directions at http://elame.com/damnthatsannoying/?p=35 and it provided the final steps I needed to get it working.

  • Deverne

    Thank for let us know the Broadcom issue and its solution.

  • Gideo

    ¡¡¡Thanks a lot for this information!!!. It worked perfectly on my Vostro 1320. I have wireless now in my Ubuntu 9.10

  • Juan

    Man, you saved me loads of trouble with this fix, Vostro 1400. THANKS!!!

  • Dom75

    Hi,
    thanks for the tips, it’s been saving my time.

  • Mich

    Thanks for WiFi hint! Works like a charm on Dell Inspiron with BCM4312 rev15. Cheers!

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  • Brittany Dunlap

    Nope, that command did nothing to get wireless to work. I have a Dell Inspiron 1750. BCM4312 I’ve tried furiously to get this stupid thing to work in ubuntu Lucid but nothing is working. Nothing.

    Which version of Ubuntu did it work in? I’ll use that. 9.04 and 9.10?

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