I bought a Dell XPS13 9350 a few weeks ago. The wireless card (Broadcom 43a3) was not supported but was supposed to be supported from Linux Kernel 4.4 onwards. that was a long wait, schlepping an ethernet cable around with me, so got the new kernel as soon as it was released today. Yet wifi still does not work. The card works fine (I've got dual-boot with Windows and it works fine there), but for some reason the driver is not installed after the upgrad to 4.4.
Here some helpful output:
$ sudo lshw -C network *-network UNCLAIMED description: Network controller product: Broadcom Corporation vendor: Broadcom Corporation physical id: 0 bus info: pci@0000:3a:00.0 version: 08 width: 64 bits clock: 33MHz capabilities: pm msi pciexpress cap_list configuration: latency=0 resources: memory:dc400000-dc407fff memory:dc000000-dc3fffff
lspci | grep Network 3a:00.0 Network controller: Broadcom Corporation Device 43a3 (rev 08)
$ iwconfig enx9cebe8239db7 no wireless extensions. lo no wireless extensions.
The driver is also not blacklisted or blocked:
$ grep -R brcm /etc/modprobe.d $ rfkill list all 0: hci0: Bluetooth Soft blocked: no Hard blocked: no
If someone knows what's going on here: thanks for all help!