I recently updated my Lenovo Y50 computer to 16.04. Since the update, I have been unable to see or connect to any wireless networks. The output of running sudo lshw -C network
is:
*-network UNCLAIMED
description: Network controller product: BCM4352 802.11ac Wireless Network Adapter vendor: Broadcom Corporation physical id: 0 bus info: pci@0000:08:00.0 version: 03 width: 64 bits clock: 33MHz capabilities: pm msi pciexpress cap_list configuration: latency=0 resources: memory:d1600000-d1607fff memory:d1400000-d15fffff
The fact that the wireless network controller is unclaimed leads me to believe that this is a driver related issue. I have checked and made sure that "Use proprietary driver" is checked in System Settings > Software & Updates > Additional Drivers and I have run sudo apt-get install --reinstall bcmwl-kernel-source
I have also restarted after every driver change to finish the changes. Is there anything else I should try?
EDIT: Here is the result of running lspci -nnk | grep 0280 -A2
:
08:00.0 Network controller [0280]: Broadcom Corporation BCM4352 802.11ac Wireless Network Adapter [14e4:43b1] (rev 03)
Subsystem: Lenovo BCM4352 802.11ac Wireless Network Adapter [17aa:0623]
Kernel modules: bcma, wl
Running sudo modprobe wl && dmesg | grep wl
returns an error:
modprobe: ERROR: could not insert 'wl': Required key not available
lspci -nnk | grep 0280 -A2
and also:sudo modprobe wl && dmesg | grep wl
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