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The installation instructions are for the novice user. Experienced users are welcome to alter the installation to meet their needs.
Temporary internet access is required for installation. There are numerous ways to enable temporary internet access depending on your hardware and situation. [One method is to use tethering from a phone.](https://www.makeuseof.com/tag/how-to-tether-your-smartphone-in-linux) Another method to enable temporary internet access is to keep a [WiFi adapter that uses an in-kernel driver](https://github.com/morrownr/USB-WiFi) in your toolkit.
You will need to use the terminal interface. The quick way to open a terminal: Ctrl+Alt+T (hold down on the Ctrl and Alt keys then press the T key).
An alternative terminal is to use SSH (Secure Shell) from the same or from another computer, in which case you will be in a suitable terminal after logging in, but this step requires that an SSH daemon/server has already been configured. (There are lots of SSH guides available, e.g., for the [Raspberry Pi](https://www.raspberrypi.com/documentation/computers/remote-access.html#setting-up-an-ssh-server) and for [Ubuntu](https://linuxconfig.org/ubuntu-20-04-ssh-server). Do not forget [to secure the SSH server](https://www.howtogeek.com/443156/the-best-ways-to-secure-your-ssh-server/).)
You will need to have sufficient access rights to use `sudo`, so that arbitrary commands can be executed as the `root` user. (If the command `sudo echo Yes` returns "Yes", with or without having to enter your password, you do have sufficient access rights.)
DKMS is used for the installation. DKMS is a system utility which will automatically recompile and install this driver when a new kernel is installed. DKMS is provided by and maintained by Dell.
It is recommended that you do not delete the driver directory after installation as the directory contains information and scripts that you may need in the future.
There is no need to disable Secure Mode to install this driver. If Secure Mode is properly setup on your system, this installation will support it.
Note: If you do not regularly maintain your system by installing updated packages, it is a good idea to not only update system package information but also to install the updated packages followed by a system reboot. The installation can then be continued with step 3.
- Channels for 2.4 GHz: Set channel 1 or 6 or 11 depending on the congestion at your location. Do not set automatic channel selection. As time passes, if you notice poor performance, recheck congestion and set channel appropriately. The environment around you can and does change over time.
- Network names: Do not set the 2.4 GHz Network and the 5 GHz Network to the same name. Note: Unfortunately many routers come with both networks set to the same name. You need to be able to control which network that is in use.
- Channels for 5 GHz: Not all devices are capable of using DFS channels (I'm looking at you Roku.) It may be necessary to set a fixed channel in the range of 36 to 48 or 149 to 161 in order for all of your devices to work on 5 GHz. (For US, other countries may vary.)
- Best location for the WiFi router/access point: Near center of apartment or house, at least a couple of feet away from walls, in an elevated location. You may have to test to see what the best location is in your environment.
- Check congestion: There are apps available for smart phones that allow you to check the congestion levels on WiFi channels. The apps generally go by the name of ```WiFi Analyzer``` or something similar.
- If connecting your USB WiFi adapter to a desktop computer, use the USB ports on the rear of the computer. Why? The ports on the rear are directly connected to the motherboard which will reduce problems with interference and disconnection.
- Avoid USB 3.1 Gen 2 ports if possible as almost all currently available adapters have been tested with USB 3.1 Gen 1 (aka USB 3) and not with USB 3.1 Gen 2.
- If you use an extension cable and your adapter is USB 3 capable, the cable needs to be USB 3 capable (if not, you will at best be limited to USB 2 speeds).
- Some USB WiFi adapters require considerable electrical current and push the capabilities of the power available via USB port. One example is adapters that use the Realtek 8814au chipset. Using a powered multiport USB extension can be a good idea in cases like this.
Answer: You can't without considerable technical skills. Realtek drivers do not support more than one adapter with the same chipset in the same computer. However, testing has shown that the Mediatek drivers do support more than one adapter with the same chipset in the same computer.
Answer: Many new Linux users already have adapters based on Realtek chipsets. This repo is for Linux users to support their existing adapters but my STRONG recommendation is for Linux users to seek out WiFi solutions based on Mediatek, Intel or Atheros chipsets and drivers. If users are looking at a USB solution, Mediatek and Atheros based adapters are the best solution. Realtek based USB adapters are not a good solution because Realtek does not follow Linux Wireless standards (mac80211) for USB WiFi adapters and the drivers are not maintained in the Linux kernel. These issues make Realtek drivers problematic in many ways. You have been WARNED. For more information about USB WiFi adapters:
