Reinstalling LL after losing wifi due to installing updates

[anon222]

Yes, it's the same driver for 14e4:4312.

[bobw]

Unfortunately, that hasn't worked.  I also tried going back to the 4th command, then the 5th again, but still no success.

The output from the inxi -nz command is now:
Network:  Card-1: Broadcom BCM4311 802.11a/b/g driver: b43-pci-bridge
          IF: N/A state: N/A mac: N/A
          Card-2: Marvell 88E8040 PCI-E Fast Ethernet Controller driver: sky2
          IF: eth0 state: up speed: 100 Mbps duplex: full mac: <filter>

I've looked at the page suggested by rokyntji:
https://help.ubuntu.com/community/WifiDo...er/bcm43xx

Should I try something from this page:
sudo apt-get --reinstall install bcmwl-kernel-source

This is for Ubuntu 12.04-12.10, so may not be right for LL2.0?

[anon222]

That's [14e4:4312] (rev 01) how did I missed that Sorry
Broadcom PCI ID's are so confusing

Code:

sudo apt-get purge linux-firmware-nonfree

Code:

sudo apt-get install firmware-b43-installer

reboot

As you can see  Broadcom BCM4311 is on the list here

misko@misko-virtual-machine:~$ apt-cache show firmware-b43-installer
Package: firmware-b43-installer
Priority: optional
Section: multiverse/kernel
Installed-Size: 56
Maintainer: Ubuntu Developers <[email protected]>
Original-Maintainer: Daniel Echeverry <[email protected]>
Architecture: all
Source: b43-fwcutter
Version: 1:018-2
Replaces: firmware-b43-lpphy-installer (<= 1:015-14)
Depends: b43-fwcutter (>= 1:018-2), bzip2, wget
Breaks: firmware-b43-lpphy-installer (<= 1:015-14)
Filename: pool/multiverse/b/b43-fwcutter/firmware-b43-installer_018-2_all.deb
Size: 3960
MD5sum: 07d2f9cb3e6f8c0091a51aa52e2a15d1
SHA1: 5426bc3087f8b45f0367a0b536a7ad5f55412db4
SHA256: 98bcb297319ccde275b8a130ae00b7eea867d54c8a6db6d0ee511fc0bfb2b90b
Description-en: firmware installer for the b43 driver
This package downloads and installs the firmware needed by the b43
kernel driver for some Broadcom 43xx wireless network cards.
.
Supported chipsets:
  * BCM4306/3;
  * BCM4311;
  * BCM4318;
  * BCM4321;
  * BCM4322 (only 14e4:432b);
  * BCM4312 (with Low-Power a.k.a. LP-PHY).
Description-md5: 69be8c515d4213f3cacafffeda87ed7a
Homepage: http://wireless.kernel.org/en/users/Drivers/b43
Bugs: https://bugs.launchpad.net/ubuntu/+filebug
Origin: Ubuntu

[bobw]

Thanks again misko_2083 for all your help, and rokyntji for your response, but unfortunately it still hasn't worked.

I am wondering now whether I should try a reinstall - it's strange that the wireless connection was working initially then failed.

Any further suggestions would be appreciated though.

[rokytnji]

Usually when I see this part of a thread coming up ("it did not work also"). My next question is was a md5sum done of downloaded Linux-Lite iso.

[bobw]

I don't think it was.  I made the disk about 3 months ago, before misko_2083 developed the Thunar facility for checking the MD5sum.  I've used to install LL successfully on two other machines, but they didn't have wireless connectivity.  I don't have the ISO file now.

If no other suggestions emerge, I'll try reinstalling from the present disk then if that fails I'll try a fresh download.

[anon222]

Try one more thing.
Maybe you card is supported by more than one driver, and they are conflicting.
First unload all the drivers.

Code:

sudo modprobe -r b43 wl brcmsmac

Then loasd this driver:

Code:

sudo modprobe b43

Wait a few seconds  and try to make a connection. If that works you'll have to blacklist the other drivers.
If that doesn't work  unload this driver and try this one.

Code:

sudo modprobe brcmsmac

Unload, then try next driver.

Code:

sudo modprobe wl

Here is how to blacklist a driver

Code:

echo "blacklist drivername" | sudo tee -a /etc/modprobe.d/blacklist-broadcom-wireless.conf

Replace "drivername"  with the ones you don't want to use
You will have to do it twice because you need 2 lines in the /etc/modprobe.d/blacklist-broadcom-wireless.conf
One for each blacklisted driver.
Example:

Code:

echo "blacklist wl" | sudo tee -a /etc/modprobe.d/blacklist-broadcom-wireless.conf

Code:

echo "blacklist brcmsmac" | sudo tee -a /etc/modprobe.d/blacklist-broadcom-wireless.conf

Update the initramfs after any changes to the blacklist files:

Code:

sudo update-initramfs -u

Reboot:

Code:

sudo reboot

[bobw]

Thanks misko_2083 - you're certainly putting some work in for me.

I didn't get past the first command.  It returned message:
modprobe: FATAL: Module wl is in use.

What should I do now?

[anon222]

Code:

sudo apt-get remove --purge bcmwl-kernel-source

reboot

[bobw]

OK - done that.

Should I now follow the instructions at #26, or are some now redundant?