How to add 802.11ac adapter for 5 GHz WiFi (RTL8811AU )
Turns out the last command is not necessary and gives an error message with no meaning.
In Ubuntu 16.04 the driver gets installed into two places:
/sys/bus/usb//drivers/rtl8812au
/sys/module/rtl8812au
And it automatically loads after a reboot.
When the ifconfig
command is issued, it can clearly be seen operating as wlx00e0xxxxxxxx
- reflecting the HWaddr in the name of the new interface.
Then by clicking on the "up/down" icon at the upper right of the screen the 5 GHz networks are clearly visible in the first part of the WiFi Networks() section.
To recap, the commands necessary are simply these:
sudo apt-get update
sudo apt-get install linux-headers-generic build-essential git
git clone https://github.com/abperiasamy/rtl8812AU_8821AU_linux.git
(Enter username and password for Github)
cd rtl8812AU_8821AU_linux
make
sudo make install
(REBOOT)
Then voila, it works.
Note that when plugged into a USB 2.0 port, the speed will be limited to 433 Mbps.
SDsolar
This photo of the igloo with the satellite dish reminds me of my roots - I am from Alaska. If you look closely you can see the noonday sun on Dec 21 at its highest point. And of course that igloo can only exist about 7 months of the year. Also if you look closely you will notice the dish is at an unnatural angle for the far north. From there, the TV satellites are right down on the southern horizon. And of course you have to wonder where the power is coming from to light the place and run the TV. The only thing missing from this photo is my favorite thing of all: The Northern Lights. That is the one thing I miss most about Alaska.
Updated on September 18, 2022Comments
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SDsolar over 1 year
Plugging in a Dual-Band WiFi adapter with the Realtek RTL8811AU chipset does nothing visible and it does not show up in
ifconfig
even after a reboot.Clearly the drivers must be installed separately.
--> I previously verified the precise model of adapter in Device Manager on a Win7 system using the same adapter. This is important because there are several types of RTL8811 chips.
The driver disk has a directory of Linux files on it that I do not recognize as working with Ubuntu.
Google leads here:
Ubuntu 16.04 8811AU Wireless driver (Medium.com)
which says to do this (paraphrased):
sudo apt-get update sudo apt-get install linux-headers-generic build-essential git git clone https://github.com/abperiasamy/rtl8812AU_8821AU_linux.git (Enter username and password for Github) cd rtl8812AU_8821AU_linux make sudo make install sudo modprobe 8812au
and all seems to work until that final command, where I get the error message
modprobe: FATAL: Module 8812au not found in directory /lib/modules/4.13.0-38-generic
None of the 5 GHz networks show up in the "up/down" WiFi settings.
Question: How to add RTL8811AU 802.11ac adapter for 5 GHz High-Speed WiFi
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SDsolar about 6 yearsTNX for the suggestion. Just rebooted then retried the
sudo modprobe 8812au
and got the same response. Went to/lib/modules/4.13.0-38-generic
and it definitely is not there. So did afind . "88*"
and also afind . "*88*"
and it did not find it.
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Johnny1am over 3 yearsThank you for sharing! I'm curious if 5Ghz wifi works for you and if so, is it a unique SSID for the 5Ghz network? I've read there are issues with this driver/hardware trying to connect if a 2.4Ghz network uses the same SSID as a 5Ghz network (something that should work fine). Sources: amazon.com/gp/product/B07FGX8LBF github.com/abperiasamy/rtl8812AU_8821AU_linux/issues/38