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I have a Netis WF2190 and I'm trying to get it to work on Kubuntu 18.04. I have downloaded and tried installing the driver from Netis' website but it won't compile. Output from the installation script can be found here.

I have tried emailing the Netis' USA support staff since Thursday two weeks ago and have not gotten any reply. I have tried contacting their international support and general inquiries teams but their inboxes were full. As a last resort, I have sent an email containing my woes to the sales inquiries team but I don't expect much since they can't seem to keep their website up for more than a few days a week.

What do I need to do to make my wifi adapter work?

If you are lucky, you can download the driver from Netis' support site here.
More than likely, you're going to have to download it from archive.org (here).

The driver is listed for Ubuntu 16.04/4.4.0 and dated February 21st, 2017

Per @chili555's request, here's the output of lsusb:

Bus 002 Device 002: ID 8087:8001 Intel Corp. 
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 006 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 005 Device 002: ID 0bda:8812 Realtek Semiconductor Corp. RTL8812AU 802.11a/b/g/n/ac WLAN Adapter
Bus 005 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 001 Device 002: ID 8087:8009 Intel Corp. 
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 004 Device 003: ID 0480:d011 Toshiba America Inc Canvio Desk
Bus 004 Device 002: ID 174c:3074 ASMedia Technology Inc. ASM1074 SuperSpeed hub
Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 003 Device 005: ID 0781:5567 SanDisk Corp. Cruzer Blade
Bus 003 Device 004: ID 045e:00b0 Microsoft Corp. Digital Media Pro Keyboard
Bus 003 Device 003: ID 046d:c07f Logitech, Inc. 
Bus 003 Device 002: ID 174c:2074 ASMedia Technology Inc. ASM1074 High-Speed hub
Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
  • Try the compilation under a 4.4 kernel instead of a 4.15 kernel. The timer API has changed -- maybe even a 4.12 kernel would work, but try what the vendor suggests. – ubfan1 Sep 24 '18 at 0:53
  • Please edit your question to show the result of the terminal command: lsusb We suspect it is an rtl8812au device. – chili555 Sep 24 '18 at 1:06
  • @ubfan1 How do I compile under a different kernel? – Husky2490 Sep 24 '18 at 4:25
  • Drop back to a 16.04.1 release to keep the 4.4 series kernel. I suppose you could add the xenial sources to the /etc/apt/sources.list file, then install an old kernel, but I've never done that. The 4.4 series kernel is not offered in 18.04 by default. – ubfan1 Sep 24 '18 at 15:32
  • so is backwards compatibility not a thing in linux? – Husky2490 Sep 24 '18 at 18:33