Dell XPS 13 wireless not working. Panda PAU03 bought to replace it also working

[moultano]

Since I bought this machine a few years ago I've never succeeded at getting the wireless to work with any recent version of Ubuntu. I finally gave up and bought a USB wireless card, Panda Wireless PAU03, and it also isn't working.

Both cards are listed as "off" and clicking the button to turn them on has no effect.

Currently running 18.04.1. Please help!

[praseodym]

Please run the wireless script from the sticky thread and show the outputs. Does LAN work?

[moultano]

Thanks. LAN works. Here's the script output. http://paste.ubuntu.com/p/D6hSqgZ373/

[praseodym]

Try

sudo apt-get remove --purge bcmwl-kernel-source
wget http://de.archive.ubuntu.com/ubuntu/pool/multiverse/b/broadcom-sta/broadcom-sta-dkms_6.30.223.271-8_all.deb
sudo dpkg -i *.deb

Reboot and show

lsmod
iwconfig
rfkill list

[moultano]

Thanks. Here's the output of those three.
https://paste.ubuntu.com/p/DZbQytD3Fk/

[chili555]

Please do:

sudo modprobe -r dell_laptop
sudo rfkill unblock all

Any improvement?

[moultano]

After running
sudo modprobe -r dell_laptop
I get
modprobe: FATAL: Module dell_laptop is in use.
No change to wifi or any other behavior.

[chili555]

Please blacklist it and reboot:

sudo -i
echo "blacklist dell_laptop"  >>  /etc/modprobe.d/blacklist.conf
exit

Reboot and show us:

rfkill list all

[moultano]

0: phy0: Wireless LAN
	Soft blocked: no
	Hard blocked: no
1: brcmwl-0: Wireless LAN
	Soft blocked: no
	Hard blocked: yes
2: phy1: Wireless LAN
	Soft blocked: no
	Hard blocked: no

[chili555]

You have two conflicting wireless devices running. Frankly, I'd rather troubleshoot the internal Broadcom than the twitchy USB. Please detach the USB and the ethernet and reboot. Next, run:

rfkill list all
dmesg | grep wl

Attach the ethernet and post the result.