Dtyjlui

I have moved house and in my new house my desk, with the computer, is isolated and cannot get the cable fron the router though there is not a big distance, probably 10 meters.

So I dusted off an old dongle I bought for my laptop some time ago, I connected to a free usb 2.0 and everything went smooth I was connected to my wifi in no time, but the max I could get was 5.7 mbps Download and 7.7 upload, this with a 100 mb connection.

I tried a series of ways to get that improved with no success, so finally I decided to buy something to get this improved, first I bought a repeater, but the improve, if any, was neglectable,finally checking in different places I decided to buy a new dongle in Amazon. A wifi adaptor ac1200 with Realtek 8812Au.

It wasn't easy to make it work, my knowledge of Ubuntu is not up to a pro, but finally, following the explanations from a web site (the disk that accompanied the adapter was ALL in chinese!!):

sudo apt-get update

sudo apt-get install linux-headers-generic build-essential git

git clone https://github.com/abperiasamy/rtl8812AU_8821AU_linux.git

cd rtl8812AU_8821AU_linux

make

sudo make install

sudo modprobe rtl8812au

It started working right away giving me almost 100 mb, so I was super happy.

After 3 weeks, the adapter didn't start. I have to say the adapter must be connected to a usb 3 and as soon as it is connected there is alight that comes on, well this time not even the light was coming on.

I tried different things:

• Change the cable to another usb 3 socket, NO SUCCESS


• Change the usb 3 cable, NO SUCCESS


• Connect a external drive to the same socket with the same cable,the hdd was working


• Re-start the computer and try everything again, the same results as before.

So finally I thought that the adapter just had died, as I was still in 30 days Amazon gives you to return the goods, I returned it and, after thinking for a couple of days, I decided to buy it again.

It arrived yesterday, this time the software in the disk was in English, but I thought it would work because the driver was installed, so I plugged it in and ....Oh, surprise!! the light didn't come on, so it doesn't work.
I have been reading about this driver and installation in ubuntu this last 48 hours, but most of the places explain what I already did and, to be honest, many of then explain things I don't understand and I am afraid that if it doesn't work I will not be able to undo what I did.

Probably I should delete the driver and do everything again, but I don't know how to do it, or even if that will work.

Any help will be welcome and please, think that I am not a pro with Ubuntu, so make it easy to understand.

Right know I came back to my old dongle with 5.7 mbps right now and if I do a "lsusb" this is what I get:

juan@juan-desktop:~/rtl8812AU_8821AU_linux$ lsusb

Bus 001 Device 005: ID 148f:7601 Ralink Technology, Corp. MT7601U Wireless Adapter

Bus 001 Device 002: ID 145f:013f Trust Megapixel Auto Focus Webcam

Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

Bus 005 Device 002: ID 0a12:0001 Cambridge Silicon Radio, Ltd Bluetooth Dongle (HCI mode)

Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub

Bus 004 Device 002: ID 058f:6362 Alcor Micro Corp. Flash Card Reader/Writer

Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub

Bus 003 Device 002: ID 062a:0102 Creative Labs Wireless Keyboard/Mouse Combo [MK1152WC]

Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub

Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub

Bus 007 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub

Bus 006 Device 004: ID 0bda:b812 Realtek Semiconductor Corp. 

Bus 006 Device 002: ID 2109:3431 VIA Labs, Inc. Hub

Bus 006 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

I am running Ubuntu 16.04 with kernel:

juan@juan-desktop:~/rtl8812AU_8821AU_linux$ uname -r

4.13.0-37-generic

The file in the small cd with the adapter has a zip file called:

RTL88x2BU_WiFi_linux_v5.2.4.1_22719_COEX20170518-4444.20170613.20170427_TV_ANDROID_6.x_COEX_8822BS-C4242_8822BU-C4242(r1)

Thank you in advance for your help.

Randy Ciwyll’s repository has the solution that worked for my system (Linux Mint 18.3 Kernel 4.10). As chili555 guessed, my device is the rtl8822bu. And yes, I have found that I need to reinstall the driver every time I get an applicable update.

git clone https://github.com/cilynx/rtl88x2BU_WiFi_linux_v5.3.1_27678.20180430_COEX20180427-5959

sudo dkms add ./rtl88x2BU_WiFi_linux_v5.3.1_27678.20180430_COEX20180427-5959

sudo dkms install -m rtl88x2bu -v 5.3.1

sudo modprobe 88x2bu

You could remove your current module with:

sudo rmmod rtl8812au

And then install the provided in the repository:

sudo apt-get install rtl8812au-dkms