I've tried just about everything there is to try and I still can't seem to get my Wi-Fi card working.
I've got a Dell Vostro 14 5490 laptop.
It appears that I don't have a working driver for my card or something along those lines. The Wi-Fi menu in the setting GUI says "No Wi-Fi Adapter Found".
Though, I know there is one and it functions perfectly because I have Windows installed in dual-boot and it works fine on it. I have verified there is no switch on the laptop and the setting is on in the BIOS.
Also, I found this link to some drivers for intel wireless cards for linux. I wasn't sure which, if any of these would work for my card. I've just installed the
iwlwifi-9000-pu-b0-jf-b0-34.618819.0.tgz and the
iwlwifi-9260-th-b0-jf-b0-34.618819.0.tgz drivers. (I'm also not certain if my process in installing these was correct either; all I did was downloaded them and move them to /lib/firmware/ and then unzipped them there. Leaving the zip files and everything in the directory) I did not have any luck in doing this - I even tried restarting the computer.
$ lspci -nn | grep -i network Network Controller : Intel Corporation Device [8086:02f0]
$ uname -r 5.0.0-31-generic
$ iwconfig enp2s0 no wireless extensions. lo no wireless extionsions
$ sudo lshw -C network *-network description: Network controller product: Intel Corporation vendor: Intel Corporation physical id: 14.3 version: 00 width: 64 bits clock: 33MHz capabilities: pm msi pciexpress msix bus_master cap_list configuration: driver=iwlwifi latency=0 resources: irq:16 memory:cc22a0000-c22a3fff
$ dmesg | grep -i firm [ 0.204901] ACPI: [Firmware Bug]: BIOS _OSI(Linux) query ignored [ 1.233739] [drm] Finished loading DMC firmware i915/kbl_dmc_ver1_04.bin (v1.4) [ 1.364414] [Firmware Bug]: ACPI(PXSX) defines _DOD but not _DOS [ 20.643192] iwlwifi 0000:00:14.3: loaded firmware version 43.95eb4e97.0 op_mode iwlmvm [ 21.051100] Bluetooth: hci0: Firmware revision 0.0 build 26 week 21 2019 [ 26.210254] iwlwifi 0000:00:14.3: Failed to load firmware chunk!
$ sudo dpkg -s linux-firmware | grep Ver Version: 1.178.3
After running the linux-firmware update as per the answer below by chili555, I ran the following and got the following output:
$ dmesg | grep iwl
Since the output was so huge, I put it into this pastebin: https://pastebin.com/M9eFfqxd
Also, during the linux-firmware update, I got a couple informational prints that said:
I: The initramfs will attempt to resume from /dev/dm-2 I: (/dev/mapper/ubuntu--vg-swap_1) I: Set the RESUME variable to override this.
After running the second set of commands in the answer below by chili555, I received the following output:
$ dmesg | grep iwl
Again, due to the output being so massive, I've included it in this pastebin: https://pastebin.com/QH8zPmgL
The wifi functionality now appears to be working properly subsequent to running the commands in chili555's answer.