Actually, if it were my pc, I would find out which driver is best supported by running this command in the Terminal.
lspci -vvnn | grep -A 9 Network
Then you can install the appropriate driver via Terminal or Driver Manager in most cases.
Please post back that info and we can take a look.
"The proprietary Broadcom STA Wireless driver is maintained upstream by Broadcom. As this driver is closed source, fixes in the driver itself may only be provided by Broadcom."
"b43 driver (Open-source)"
"The b43 infrastructure is composed of two parts. The first is the firmware-b43-installer package. This is simply a script to extract and install the b43 driver firmware, maintained by the Ubuntu community. The second is the b43 driver, maintained upstream by the Linux kernel community. Instructions to install the package may be found below."
The idea here IMO, is to use the one that is best for the device, AND, use the one that is maintained by the Ubuntu Community.
Some of these drivers overlap as you can see, so we should use the Open Source when available...again...IMO.
Edited by pcpunk, 19 July 2018 - 09:36 AM.