Dell Vostro 5490 no WIFI in Ubuntu 18.04
I have a Dell Vostro 5490 with Ubuntu 18.04 installed in dual boot with Windows 10. I currently have no WIFI. I have tried to update and upgrade my packages, and I have also followed this guide, but without success. Except for the things mentioned, my Ubuntu is completely stock, I have not done any other modifications. Please help me out with this issue, any help would be greatly appreciated!
This is the output from the command lspci -knn | grep Net -A3; rfkill list:
00:14.3 Network controller [0280]: Intel Corporation Device [8086:02f0]
Subsystem: Intel Corporation Device [8086:42a4]
Kernel driver in use: iwlwifi
Kernel modules: iwlwifi
0: hci0: Bluetooth
Soft blocked: yes
Hard blocked: no
Here is a paste of the output from the command dmesg | grep iwl:
https://paste.ubuntu.com/p/hzDHb6zGhb/
Please note this:
[ 3.205709] iwlwifi 0000:00:14.3: Failed to start RT ucode: -110
[ 3.205711] iwlwifi 0000:00:14.3: Firmware not running - cannot dump error
[ 3.217939] iwlwifi 0000:00:14.3: Failed to run INIT ucode:-110
There are several bug reorts that reference this exact sequence. The first that suggests a fix is this: https://bugs.launchpad.net/ubuntu/+source/linux-firmware/+bug/1867026 It suggests renaming the firmware file that loads. Please try:
sudo rmmod iwlmvm
sudo rmmod iwlwifi
sudo cp /lib/firmware/iwlwifi-Qu-b0-jf-b0-48.ucode{,.bak}
sudo cp /lib/firmware/iwlwifi-QuZ-a0-jf-b0-48.ucode /lib/firmware/iwlwifi-Qu-b0-jf-b0-48.ucode
sudo modprobe iwlwifi
If this is ineffective, then revert the rename:
sudo rmmod iwlmvm
sudo rmmod iwlwifi
sudo mv /lib/firmware/iwlwifi-Qu-b0-jf-b0-48.ucode{,.bak} /lib/firmware/iwlwifi-Qu-b0-jf-b0-48.ucode
sudo cp /lib/firmware/iwlwifi-Qu-a0-jf-b0-48.ucode /lib/firmware/iwlwifi-Quz-b0-jf-b0-48.ucode
sudo modprobe iwlwifi
Then try the solution here: https://bugs.launchpad.net/ubuntu/+source/linux-firmware/+bug/1867026/comments/2
Download all the deb files to your desktop. Then install them with:
cd ~/Desktop
sudo dpkg -i linux*.deb
Reboot.