Problem with wi-fi card

[player_power]

hi i have an BCM43142 i tried a lot of thing but can’t make in to work

output of sudo lshw -C network

*-network
description: Ethernet interface
product: RTL8101/2/6E PCI Express Fast/Gigabit Ethernet controller
vendor: Realtek Semiconductor Co., Ltd.
physical id: 0
bus info: pci@0000:01:00.0
logical name: enp1s0
version: 08
serial: 50:af:73:6a:f1:6b
size: 100Mbit/s
capacity: 100Mbit/s
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress msix vpd bus_master cap_list ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd autonegotiation
configuration: autonegotiation=on broadcast=yes driver=r8169 driverversion=2.3LK-NAPI duplex=full firmware=rtl8106e-2_0.0.1 04/23/13 ip=192.168.1.126 latency=0 link=yes multicast=yes port=MII speed=100Mbit/s
resources: irq:88 ioport:1000(size=256) memory:90504000-90504fff memory:90500000-90503fff
*-network UNCLAIMED
description: Network controller
product: BCM43142 802.11b/g/n
vendor: Broadcom Limited
physical id: 0
bus info: pci@0000:02:00.0
version: 01
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress cap_list
configuration: latency=0
resources: memory:90400000-90407fff

[mdooley]

Look at these pages on askubuntu -

Is it possible to use Broadcom BCM43142 wifi in Ubuntu 16.04?

Installing Broadcom Wireless Drivers

It appears as if you have a working ethernet which is good.

Have at it player_power.

[player_power]

the first one din't work the second link is a bit too hard for now i will try it tomorrow
the only results the first one gived are those:

[mdooley]

It appears as if the proprietary driver is not working on your system. Rats!

I also agree that the second page is a full on explanation and series of commands to follow. Before trying that, I suggest that you try a simpler approach. See -

Broadcom wireless tip

This may be of some help if you have a Broadcom wireless chip in your laptop. This has been used countless times when I’ve installed Ubuntu on my own and my friend’s laptops. In terminal, first do sudo lshw -class network then lspci -vvnn | grep 14e4 to find out if there is a Broadcom (BCM4311) controller. If you have access to an ethernet connection, then do the following: sudo apt-get update sudo apt-get install firmware-b43-installer sudo apt-get remove bcmwl-kernel-source sudo reboot A…

which I posted in April. It is relatively easy to do. Good luck player_power.

[crankypuss]

I tried the rev-78 kernel update yesterday and wifi was not a happy thing to want. I’m back on some earlier kernel now, 75 i think. Dunno if that applies to your situation or not, but data is always useful during a bughunt.

[player_power]

tried, no luck.
can it be the kernel thing?

[mdooley]

It’s possible but I would suggest going through the steps listed on the second page above - askubuntu.com Installing Broadcom Wireless Drivers. See the answer marked with number 94. You may need to remove your installed driver first.
Good luck player_power. At this point I’m out of ideas.

[player_power]

YEEESSSS!!!
after doing step 94 and some tinkering in the BIOS it worked!!!

now i have an other wireless broblem the Bluetooth does not work at all

[mdooley]

Please mark this problem as solved if you would.

Do a search on “bluetooth” in this forum using the spyglass icon at the upper right. Perhaps there is a solution somewhere here.

[Raildog]

This is what worked for me with this issue:
Sodo apt-get install-b43-firmware
Sudo modprobe -r b43
Sudo modprobe b43
Enjoy wifi!

Hope this helps