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A couple of months ago, I got a new XPS 15 (7590).

I immediately installed Ubuntu 19.10, and had no problems, everything worked great.

Yesterday, after not using it for several days, I attempted to do so, and I was surprised I had no internet. I thought maybe my configuration lost WiFi password, and I'd have to re-enter it.

But no, when I went to do that, I got message that the WiFi was not detected.

ifconfig -a shows only lo.

It seems the WiFi driver is missing.

Is this some kind of regression? Did a kernel or firmware upgrade break my WiFi?

Any clues?

Thanks!

Edit: Add new info:

$ lapci -knn|grep Net
3b:00.0. Network controller [0280]: Intel Corporation Device [8086:2723] (rev 1a)
         Subsystem Bigfoot Networks, Inc. Device [1a56:1654]

Sorry it took so long!

Also, rfkill list doesn't seem to do anything

Mark J. Bobak
  • 143

1 Answers1

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I have the same laptop, and the same problem when I installed Ubuntu 18.04 the first time.

The only solution I found is the following :

sudo apt-get install git
sudo apt-get install build-essential

git clone 
https://git.kernel.org/pub/scm/linux/kernel/git/iwlwifi/backport- 
iwlwifi.git
cd backport-iwlwifi
make defconfig-iwlwifi-public
make -j4
sudo make install

sudo git clone 
git://git.kernel.org/pub/scm/linux/kernel/git/firmware/linux-firmware.git
cd linux-firmware
sudo cp iwlwifi-* /lib/firmware/

Of course, you need internet connection to do it. You have to buy an Ethernet/USB-C adapter.

Sometimes, the probleme come back after updating linux kernel packages, and I have to reproduce the same commands.

I hope the problem will be fixed soon, maybe with Ubuntu 20.04 !

(Original answer here)

Rémi
  • 311