1

I created a question before: Wifi is fine on Ubuntu but very slow on window 7

And I found a solution by running this command: sudo modprobe -r b44 b43 b43legacy ssb brcmsmac wl || sudo modprobe brcmsmac

But everytime I restart my computer, I must run it again. If not, other computer in my network will have slow connection. And my questions are:

1. Why wl mode is the reason?

2. How to set permanently this configuration?

Thank for your attention :-)

Community
  • 1
Rong Nguyen
  • 361

2 Answers2

1

Blacklist the kernel modules you don't want to load in the first place by putting them in a file in /etc/modprobe.d/ like this:

  1. Create the file /etc/modprobe.d/blacklist-mywireless.conf

    sudo gedit /etc/modprobe.d/blacklist-mywireless.conf

  2. For each module you don't want to load at bootup, put on a single line: blacklist modulename, e.g.:

    blacklist b44
blacklist b43
blacklist b43legacy
blacklist ssb
blacklist wl

  3. Save and close the file.

  4. Add a line to /etc/modules for each module you do want to load, e.g.:

    sudo gedit /etc/modules

    Append, on a new line:

    brcmsmac

  5. Save and close.

  6. Reboot.

gertvdijk
  • 69,427
1

In Ubuntu 13.04, I believe the default bcmwl-kernel-source will not work correctly for your Broadcom 4313. I recommend that you get a temporary wired ethernet connection and open a terminal:

sudo apt-get remove --purge bcmwl-kernel-source
wget http://us.archive.ubuntu.com/ubuntu/pool/restricted/b/bcmwl/bcmwl-kernel-source_5.100.82.112+bdcom-0ubuntu3_amd64.deb

Or, if yours is a 32-bit system:

wget http://us.archive.ubuntu.com/ubuntu/pool/restricted/b/bcmwl/bcmwl-kernel-source_5.100.82.112+bdcom-0ubuntu3_i386.deb

Confirm 32- or 64-bit:

arch

Then do:

sudo dpkg -i bcmwl*.deb

Reboot and give us your report.

chili555
  • 61,330