Broadcom BCM4350 802.11ac of XPS 13 9350 not detected on 16.06 live cd

wifi
live-media
#1

After I boot the live cd, I have no wireless adapter:

iwconfig
lo        no wireless extensions.

Here is the hardware output:

inxi -Fx
System:    Host: manjaro Kernel: 4.4.11-1-MANJARO x86_64 (64 bit gcc: 6.1.1) Desktop: KDE Plasma 5.6.4 (Qt 5.6.0)
           Distro: Manjaro Linux
Machine:   System: Dell (portable) product: XPS 13 9350
           Mobo: Dell model: 0VM5NC v: A00 Bios: Dell v: 1.3.3 date: 03/01/2016
Battery    BAT0: charge: 51.4 Wh 73.0% condition: 70.4/75.7 Wh (93%) model: SMP DELL JHXPY53 status: Discharging
CPU:       Dual core Intel Core i7-6500U (-HT-MCP-) cache: 4096 KB
           flags: (lm nx sse sse2 sse3 sse4_1 sse4_2 ssse3 vmx) bmips: 10371
           clock speeds: max: 3100 MHz 1: 800 MHz 2: 800 MHz 3: 800 MHz 4: 800 MHz
Graphics:  Card: Intel Skylake Integrated Graphics bus-ID: 00:02.0
           Display Server: X.Org 1.17.4 driver: intel Resolution: 3200x1800@59.98hz
           GLX Renderer: Mesa DRI Intel HD Graphics 520 (Skylake GT2)
           GLX Version: 3.0 Mesa 11.2.2 Direct Rendering: Yes
Audio:     Card Intel Sunrise Point-LP HD Audio driver: snd_hda_intel bus-ID: 00:1f.3
           Sound: Advanced Linux Sound Architecture v: k4.4.11-1-MANJARO
Network:   Card: Broadcom BCM4350 802.11ac Wireless Network Adapter bus-ID: 3a:00.0
           IF: N/A state: N/A mac: N/A
Drives:    HDD Total Size: 92.9GB (50.2% used) ID-1: /dev/nvme0n1 model: N/A size: 512.1GB
           ID-2: USB /dev/sda model: Ultra_Fit size: 62.1GB ID-3: USB /dev/sdb model: Ultra_Fit size: 30.8GB
Partition: ID-1: / size: 12G used: 51M (1%) fs: overlay dev: N/A
           ID-2: swap-1 size: 17.04GB used: 0.00GB (0%) fs: swap dev: /dev/nvme0n1p3
Sensors:   System Temperatures: cpu: 59.0C mobo: N/A
           Fan Speeds (in rpm): cpu: N/A
Info:      Processes: 198 Uptime: 2 min Memory: 571.3/15919.9MB Init: systemd Gcc sys: 6.1.1
           Client: Shell (bash 4.3.421) inxi: 2.3.0 

lspci
00:00.0 Host bridge: Intel Corporation Skylake Host Bridge/DRAM Registers (rev 08)
00:02.0 VGA compatible controller: Intel Corporation Skylake Integrated Graphics (rev 07)
00:04.0 Signal processing controller: Intel Corporation Skylake Processor Thermal Subsystem (rev 08)
00:14.0 USB controller: Intel Corporation Sunrise Point-LP USB 3.0 xHCI Controller (rev 21)
00:14.2 Signal processing controller: Intel Corporation Sunrise Point-LP Thermal subsystem (rev 21)
00:15.0 Signal processing controller: Intel Corporation Sunrise Point-LP Serial IO I2C Controller #0 (rev 21)
00:15.1 Signal processing controller: Intel Corporation Sunrise Point-LP Serial IO I2C Controller #1 (rev 21)
00:16.0 Communication controller: Intel Corporation Sunrise Point-LP CSME HECI #1 (rev 21)
00:17.0 SATA controller: Intel Corporation Sunrise Point-LP SATA Controller [AHCI mode] (rev 21)
00:1c.0 PCI bridge: Intel Corporation Device 9d10 (rev f1)
00:1c.4 PCI bridge: Intel Corporation Sunrise Point-LP PCI Express Root Port #5 (rev f1)
00:1c.5 PCI bridge: Intel Corporation Sunrise Point-LP PCI Express Root Port #6 (rev f1)
00:1d.0 PCI bridge: Intel Corporation Device 9d18 (rev f1)
00:1f.0 ISA bridge: Intel Corporation Sunrise Point-LP LPC Controller (rev 21)
00:1f.2 Memory controller: Intel Corporation Sunrise Point-LP PMC (rev 21)
00:1f.3 Audio device: Intel Corporation Sunrise Point-LP HD Audio (rev 21)
00:1f.4 SMBus: Intel Corporation Sunrise Point-LP SMBus (rev 21)
3a:00.0 Network controller: Broadcom Corporation BCM4350 802.11ac Wireless Network Adapter (rev 08)
3b:00.0 Unassigned class [ff00]: Realtek Semiconductor Co., Ltd. RTS525A PCI Express Card Reader (rev 01)
3c:00.0 Non-Volatile memory controller: Samsung Electronics Co Ltd NVMe SSD Controller (rev 01)

Curiously using the Ubuntu live cd works just fine, what am I missing? Thanks!

0 Likes

No Wifi Connection - Broadcom BCM4350
Where to file a report for incompatibility between driver and kernel version?
#2

If you booted in “Free” mode you’ll probably be missing the Broadcom drivers. Try a

modprobe b43

though I don’t know if this is the correct driver - if you search you should find other threads about the XPS13.

0 Likes

#3

I booted in non-free, tried modprobe b43 and used the search, couldn’t find any issues or solutions for it …

0 Likes

#4

In which case, given your hardware is like brand spanking new, a newer kernel is the next option.

0 Likes

#5

Thank you! How do I get a newer kernel on the live cd?

Since it works in Ubuntu, maybe the following Ubuntu output would help to identify how to make it work?

Network: Card: Broadcom BCM4350 802.11ac Wireless Network Adapter driver: brcmfmac bus-ID: 3a:00.0
IF: wlp58s0 state: up mac:

Also booting the kde live usb in legacy mode never brings up plasma, only a cursor with the background image, no widgets, panels or programs. Booting in UEFI works. Is that to be expected?

Seems like I might be better off replacing the wifi card with https://www.amazon.com/Intel-Generation-Wireless-Computer-Notebook/dp/B00RCZ4I6S?ie=UTF8&psc=1&redirect=true&ref_=oh_aui_search_detailpage ?

Thanks again!

0 Likes

#6

The Arch-Wiki has some to say about your laptop. Have a look:
https://wiki.archlinux.org/index.php/Dell_XPS_13_(2016)

0 Likes

#7

Although this would suggest that your wifi should work out of the box with kernel 4.4 and the latest linux-firmware … hm.

0 Likes

#8
modprobe brcmfmac

?

0 Likes

#9

This output is normal. I have it, too, with a working wifi … :wink: although of course after that there is more about wlp2s0 and such.
Which edition are you running?

0 Likes

#10

Looks like the KDE 16.06(.1?) live CD.

0 Likes

#11

Ah. I didn’t see that in the inxi output :wink:
However, this is confusing now, because your inxi says kernel 4.4.11 while the KDE 16.06 release lists 4.4.12 and the 16.06.1 release 4.4.13.
Is this maybe a dev-build ISO?
In that case please try using the latest ISO from here

0 Likes

#12

I downloaded the latest kde live image and chose non-free, no wifi card, did modprobe brcmfmac and voila, like magic internet money, I have a card, I see session ids, awesome, thanks for the help!

Since the intel 7265 is < $10 on ebay I’ll just swap it anyways. Looks like some XPS 13 get shipped with it standard, oddly others get shipped with broadcom. The internet is full of stories how the broadcom even sucks under windows, so why it’s a thing at all is baffeling to me. I bought the xps super cheap on ebay (refurbished) and since nothing else is wrong with it I wonder if it simply got returned because of dodgy wifi … It’s worth the $8 to use free drivers that work out of the box, anyways thanks for giving me the internet in the meantime until the new card ships :slight_smile:

0 Likes