Monday, July 04, 2016

XPS 13 (9350) - Broadcom BCM4350 - Fedora 23 Upgrade - Linux Kernel 4.5 - WiFi Missing

To make your Broadcom BCM4350 work after upgrading your Fedora 22 to Fedora 23, uninstall broadcom-wl, then restart. Short story below.

Fedora 24 was released a month ago, which means Fedora 22 is losing its support. That pushed me to upgrade my box to the next version, which is Fedora 23, which has 1 more year of support. (I tend to use a version previous the latest release for a bit more stability :D) So, yeah, after that os upgrade, which is now easy via dnf, I started to apply fixes to each issue as they came... and continue to come ;)

One of the issues I got was with my Broadcom BCM4350 wireless. My WiFi just went AWOL while I was fixing another issue. HAHA I've always had issues with Broadcom wireliess on Fedora so it's not really a surprise.

Anyway, i tried my previously noted procedure that worked on Fedora 22 (http://linusramos.blogspot.com/2016/03/xps-13-9350-broadcom-bcm4350-fedora-22.html), but it didn't work. The Broadcom card was not detected as a "network controller" So, I tried to refresh the drivers installed. I removed broadcom-wl and restarted my box. To my surprise, my WiFi worked. Yep, just like that.

The following commands now show...

# lspci -nn -d 14e4: 
3a:00.0 Network controller [0280]: Broadcom Corporation BCM4350 802.11ac Wireless Network Adapter [14e4:43a3] (rev 08)

# lshw -C net
WARNING: you should run this program as super-user.
  *-network                 
       description: Wireless interface
       product: BCM4350 802.11ac Wireless Network Adapter
       vendor: Broadcom Corporation
       physical id: 0
       bus info: pci@0000:3a:00.0
       logical name: wlp58s0
       version: 08
       serial: 30:52:cb:85:xx:xx
       width: 64 bits
       clock: 33MHz
       capabilities: bus_master cap_list ethernet physical wireless
       configuration: broadcast=yes driver=brcmfmac driverversion=7.35.180.119 firmware=01-e791c176 ip=10.0.xx.xx latency=0 multicast=yes wireless=IEEE 802.11abgn

       resources: irq:283 memory:dc400000-dc407fff memory:dc000000-dc3fffff

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