Installing a USB wifi unit in Ubuntu 20.04



arochester

Moderator
Staff member
Gold Supporter
Credits
1,308
It shows, indeed, that it is an RTL8812AU.

You have that driver installed.

You possibly cannot hot-boot it. That is, you cannot start your computer and then plug it in, You must instead plug it in first and then switch on your computer. That way it is detected,
 

jglen490

Well-Known Member
Credits
1,981
I have the same problem, and typed the command ubuntu-drivers devices, what appeared to me was the following:View attachment 6881
can anybody help me? please explain as if it were for a 5 year old child
Look at what it is telling you.

Now run:
Code:
sudo apt install rtl8812au-dkms
 

ken doka

New Member
Credits
94
I am a newbie here. I have tried installing Ubuntu 16.4 18.04LTE and 20.04 and Linux-Mint on a Dell Tower 790 i7 and a Dell Workstation Gamer T3610 Xeon E5 2650 8 core 16 thread Geforce GTX 1070 (built sub £500). But the wifi does not work with Linux on either machine, as per the original opening question here.
I was looking to move from Win 10 on which wifi works fine or create a dual boot system.
On all my Rpi p4 thr wifi is on board so any command sudo apt update instantly works but on Dell only failed failed, reported.
I hope this is pretty clear that any commands to upgrade, or 'get' visit sites Https WWW Fails. There is no wifi connection.
Trying say isusb shows no wifi dongle. A network search shows only ethernet available.
it would be VERY strange to use a Rpi P4 to link to the WWW by cable.

Following advice here I've ordered Linux approved usb dongle. Thanks. I'll try it out and report back.
 

ken doka

New Member
Credits
94
Reporting back after two days and about 8.5 hours. On my Linux Mint installed the new Bros Trend AC 1200 wifi usb as recommended as fully Linux compatible from Amazon $45 usb wifi. Copied THE Linux files various into C;\ drive while under win10 though not needed as Linux all variations unbutu zorin debian Lunbutu raspian Xunbutu etc plus 22 recognise this Bros Trend wifi guaranteed (nearly).
After reIoading I mean they the usb's are in the PC but no wifi is found!!! Checking usb list and list network nothing found except Wired. OK so I loaded latest Mint v20 No joy again!! no wifi found (though windows does find it). OK tried Linux Zorin its suggested will find any Wifi but that stalls on final load up page, another 2 trys failed so I moved on.
It is highly recommended to go Wired then sudo apt-get update/upload everything Wifi then works but my isp is through my phone Hotspot which used 347gb of data last month thats unlimited Data in my $30 phone package. I mention this only as I'd willingly download all and every variant of Linux to find one that fixed this Wifi "no found problem".
I'll continue trying but as I mentioned my RPI P4 v2 with 4 meg ram on board wifi bluetooth (ethernet if required) and its brill No problems. An old Dell laptop win 10 to type here on a Linux site does fine.
 

jglen490

Well-Known Member
Credits
1,981
After the OP and three more similar, but not the same questions I think everyone is confused. This should have been 4 different posts.

The bottom line is this, Ubuntu has tools built in to at least try to detect drivers and to then either install directly or indicate what to install. These questions always come down to finding/having/installing the correct driver.
 

CFx

New Member
Credits
22
For Cudy WU700 AC650 on Ubuntu 20.04 I just used this driver installing as .deb and worked fine
rtl8821cu-dkms.deb

on page

Just bought it and had your same problems, then searching I found a BrosTrend stick that's almost the same and its driver works fine
 


Members online


Top