I have a USB wifi dongle that I am trying to use with an old HP tower that I installed Ubuntu 20.04 on (light install).
Realtek Semiconductor Corp. USB3.0 802.11ac 1200M Adapter
for the device in question. It shipped with a Windows version of a RTL8812BU driver. There are also Linux drivers available on the manufacturer website (http://www.wise-tiger.com/English/html/2731985548.html).
I tested the dongle on a laptop running 16.04 and got it to work using the manufacturer-provided driver with only minor difficulty.
The drivers are outdated, but I manually patched them for 20.04 and the installer seems to run fine now, but I still don't see wifi networks available.
I realize there are numerous similar questions, so I've tried solutions from those. The most promising seemed to be getting the driver from here: https://github.com/morrownr/88x2bu. I followed those instructions without error, but still got no wifi connection after a reboot.
When I look at Settings > Network there isn't even an option for wireless.
eno1: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500 inet 192.168.0.10 netmask 255.255.255.0 broadcast 192.168.0.255 inet6 fe80::3350:e196:1b67:13b2 prefixlen 64 scopeid 0x20<link> ether 74:46:a0:9b:5d:33 txqueuelen 1000 (Ethernet) RX packets 34152 bytes 15533511 (15.5 MB) RX errors 0 dropped 0 overruns 0 frame 0 TX packets 16952 bytes 2227272 (2.2 MB) TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0 device interrupt 20 memory 0xf7c00000-f7c20000 lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536 inet 127.0.0.1 netmask 255.0.0.0 inet6 ::1 prefixlen 128 scopeid 0x10<host> loop txqueuelen 1000 (Local Loopback) RX packets 3110 bytes 313665 (313.6 KB) RX errors 0 dropped 0 overruns 0 frame 0 TX packets 3110 bytes 313665 (313.6 KB) TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
lo no wireless extensions. eno1 no wireless extensions.
lshw -C network:
*-network description: Ethernet interface product: 82579LM Gigabit Network Connection (Lewisville) vendor: Intel Corporation physical id: 19 bus info: pci@0000:00:19.0 logical name: eno1 version: 04 serial: 74:46:a0:9b:5d:33 size: 1Gbit/s capacity: 1Gbit/s width: 32 bits clock: 33MHz capabilities: pm msi bus_master cap_list ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd 1000bt-fd autonegotiation configuration: autonegotiation=on broadcast=yes driver=e1000e driverversion=3.2.6-k duplex=full firmware=0.13-4 ip=192.168.0.10 latency=0 link=yes multicast=yes port=twisted pair speed=1Gbit/s resources: irq:25 memory:f7c00000-f7c1ffff memory:f7c39000-f7c39fff ioport:f080(size=32)
(wired works fine).
rfkill list returns no output.
Not seeing wlan0 or something equivalent at all seems odd to me. Any new ideas welcome.