Ubuntu 15.04 not working with Broadcom B4311

Question

I've installed a fresh copy of Xubuntu 15.04 and I can't get my Broadband B4311 Wifi card working. I had Ubuntu GNOME 14.04, and I solved the problem using the b43 driver, so I'd already done a lot of tweaking, now neither the b43 driver or the Broadcom proprietary driver works. Is this kernel related? Has anyone had the same problem?

Solution 1

sudo apt-get install firmware-b43-installer
sudo -H gedit /etc/modprobe.d/blacklist-broadcom-wireless.conf

removed the line with b43

sudo update-initramfs -u

Details found here on the help.ubuntu.com wiki

Solution 2

Correction:

Actually, the correct file to edit on gedit is /etc/modprobe.d/blacklist-bcm43.conf since this file is for the Broadcom 43xx series wifi chipsets. Don't forget to reboot the PC once these changes are made to take into effect.

So to put it into steps (for some people who don't get what I'm talking about):

Open Terminal by pressing Ctrl+Alt+T

Type

sudo apt-get install firmware-b43-installer
gksudo gedit /etc/modprobe.d/blacklist-bcm43.conf

Comment out (by putting a # at the start of the line) any items with the words bcm43 or bcm43xxx in them. Save the file and close gedit once you're done with these changes.

Reboot the PC.

NOTE: some PCs may require you to activate the wifi card through either a combo key press (FN + F# or an unknown side/front switch) before you can see your wifi networks on the Network Connections.

Comments

[Jeremy31]

Can you add the result of ls /etc/modprobe.d/ | grep bcm43 and lspci -nnk | grep 280

[Cláudio Palma]

- alsa-base.conf blacklist.conf blacklist-modem.conf blacklist-watchdog.conf intel-microcode-blacklist.conf vmwgfx-fbdev.conf blacklist-ath_pci.conf blacklist-firewire.conf blacklist-oss.conf dkms.conf iwlwifi.conf blacklist-broadcom-wireless.conf blacklist-framebuffer.conf blacklist-rare-network.conf fbdev-blacklist.conf mlx4.conf

[Cláudio Palma]

- 00:1e.0 PCI bridge [0604]: Intel Corporation 82801 Mobile PCI Bridge [8086:2448] (rev e2) 00:1f.0 ISA bridge [0601]: Intel Corporation 82801GBM (ICH7-M) LPC Interface Bridge [8086:27b9] (rev 02) 00:1f.1 IDE interface [0101]: Intel Corporation 82801G (ICH7 Family) IDE Controller [8086:27df] (rev 02) 00:1f.2 SATA controller [0106]: Intel Corporation 82801GBM/GHM (ICH7-M Family) SATA Controller [AHCI mode] [8086:27c5] (rev 02) 02:00.0 Network controller [0280]: Broadcom Corporation BCM4311 802.11b/g WLAN [14e4:4311] (rev 01)

[Cláudio Palma]

02:00.0 Network controller [0280]: Broadcom Corporation BCM4311 802.11b/g WLAN [14e4:4311] (rev 01) Subsystem: Hewlett-Packard Company BCM4311 802.11b/g Wireless ... [103c:1364] Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx- Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx- Latency: 0, Cache Line Size: 64 bytes Interrupt: pin A routed to IRQ 16 Region 0: Memory at d6000000 (32-bit, non-prefetchable) [size=16K] Capabilities: <access denied> Kernel driver in use: b43-pci-bridge

[Jeremy31]

So what is in the blacklist file cat /etc/modprobe.d/blacklist-broadcom-wireless.conf

[Cláudio Palma]

wl driver that was the default after install

[Jeremy31]

Have you installed the firmware? sudo apt-get install firmware-b43-installer and rebooted?

[Cláudio Palma]

yes, i've installed and rebooted

[Jeremy31]

Anything in rfkill list all

[Cláudio Palma]

I've just edit blacklist-broadcom-wireless.conf and the b43 driver was blacklisted, i guess i was very sleepy last night, i just remove it and runned sudo update-initramfs -u and it's done. Thank you very much. Now i feel bad for starting this

[Jeremy31]

As long as it works now

[Cláudio Palma]

Thank you, my ethernet cable is out and i'm on wireless again