Disclosure

I am not responsible for any issues. All of the source files have their corresponding licenses so please review them.

I am hopeful that the error causing issues with the rtwn(4) driver is resolved in a timely manner; however, it is up to the maintainers time as to when it does get fixed and tested.

Description

This is the urtwn(4) driver from DragonFlyBSD v5.4.2 fitted to compile to FreeBSD v12 and later.

Reasons

Due to a bug, which is yet to be worked out, my Realtek 8192CU (EDIMAX N150) wireless N, nano USB NIC would have the following issues:

1. Slow association with WAPs
2. ICMP packet loss between 10-75%
3. fetch speeds measuring 8-80kbps

Once I rebuilt the urtwn driver, from the most recent DragonFlyBSD release, I experienced the following results:

1. Faster association with WAPs
2. ICMP with 0% packet loss
3. fetch speeds averaging 320kbps

Building

1. Install the src from ISO
   • Optionally: Retrieve from the SVN repository
2. Unzip or clone this repository
3. Execute the shell file contained within

   ./deploy-sys-objects.sh
   

4. Build kernel modules

   cd /usr/src/sys/modules/urtwn/
   make clean
   make
   make install
   cd ../urtwnfw
   make clean
   make
   make install
   

5. Update your system configuration to use the if_urtwn.ko module
   • Refer to FreeBSD Handbook