I am having the same problem now with my xps 13 9343
Software&updates dialog shows 1 entry under 'Additional Drivers':
Broadcom corporation:BCM4352 802.11ac Wireless Network Adapter
(x) Using Broadcom 802.11 Linux STA wireless driver source from bcmwl-kernel-source (proprietary)
I am having the same problem now with my xps 13 9343
Software&updates dialog shows 1 entry under 'Additional Drivers':
Broadcom corporation:BCM4352 802.11ac Wireless Network Adapter
(x) Using Broadcom 802.11 Linux STA wireless driver source from bcmwl-kernel-source (proprietary)
No idea what it means