Debian: Realtek wireless adapter setup

This is the only process that worked for me to get a Realtek RTL8188AU wireless adapter chipset working on my Debian9 system, and also how I got it to work in VirtualBox.


Realtek RTL8188AU chipset
Reinstalling Your Realtek Wireless Driver

Install and configure rtl8812au in Debian:

# sudo apt-get install linux-headers-$(uname -r) build-essential git

# git clone https://github.com/scrivy/rtl8812AU_8821AU_linux.git
# cd rtl8812AU_8821AU_linux
# make
# sudo make install
# sudo modprobe rtl8812au
# reboot

source: https://youtu.be/SWw4KDs9jko


To get VirtualBox to recognize any USB device:

If you haven't installed the extension pack for VirtualBox then just go here and follow the directions:

https://askubuntu.com/questions/25596/how-to-set-up-usb-for-virtualbox/25600#25600

If you've already installed the extension pack you may just need to run this command:

# sudo usermod -aG vboxusers <username>

Then logout/login or reboot.
You should be able to add USB devices to virtual machines now.

Read more about guest additions on virtualbox: https://www.virtualbox.org/manual/ch04.html#idp90764336 

If your wireless adapter still wont show up in your virtualbox machine you may need to setup a device filter, if selecting the device doesn't work.

Go to the virtual OS setttings > USB and add a USB Device Filter, this way your virtual machine can pick up the USB device when you plug it in.

To get the device information for your filter, open usbview and select your device.

# usbview

Find your device in the list and fill out the filter with all the info you can.
Now when you load your virtual machine and plug in your USB device, virtualbox should route it to the virtual machine.

read more:
https://www.virtualbox.org/manual/UserManual.html#settings-usb

Dual Display on Debian with AMD Radeon GPU

This is what worked for me to get a second display working on my Asus X550Z laptop with Linux Debian 9 OS. I'm simply going to copy and paste the section that I used from this website: https://linuxconfig.org/how-to-install-amdgpu-drivers-on-debian-9-stretch-linux

For a little more info you can head over there.

You just need to install some AMDGPU drivers

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Written by: Nick Congleton

Required Packages

There are still some packages that need to be installed and some things that need to be done to get the drivers working. The first thing you need to do is enable the contrib and non-free repositories in Debian.

Yes, the drivers are open source, but they do require firmware blobs to function properly.

In your /etc/apt/sources.list add contrib non-free after main on every line. When that's done, close your text editor and run:

# apt update && apt upgrade

You should be using apt instead of apt-get by now. apt is the newer and better command. In creating this guide, kernel 4.9 was being kept back by apt-get but installed perfectly fine with apt.

Linux Firmware

Alright, so now you're ready to install the single package that makes this possible. Because Debian doesn't ship firmware blobs by default, the required firmware is available but not installed. Install it with the command below.

# apt install firmware-linux

That's really it. Now, don't restart just yet. There is another important part.

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LLVM

LLVM is required to build Mesa, and it is used by some of the graphical packages. You may be able to get by without it, but it's a good idea to make sure that your system has the right version installed, just in case.

In order for Mesa to be built with AMDGPU support, LLVM 3.9 or greater is needed. At the time of this article, 3.9 is still the latest version, but 4.0 is available as a release client.

Meanwhile, Stretch is still shipping 3.7 and 3.8 as well as 3.9. Install 3.9 or 4.X now to make sure that the older versions are not pulled in.

# apt install llvm-3.9 clang-3.9

Restart and Test

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After this procedure, my 2nd display worked.