Some older Atheros or Realtek chipsets perform more reliably for security tasks using these older, specifically-patched stacks.
During this period, many built-in Linux drivers lacked support for packet injection or monitor mode. Security researchers and wardrivers relied on compat-wireless to: Enable on unsupported hardware. Fix the "fixed channel -1" error in Aircrack-ng. Support high-power USB Wi-Fi adapters . Patch modern drivers into older LTS kernels . Prerequisites for Installation compatwireless20100626ptar patched
Assuming you have the ptar.patch file (available from legacy OpenWrt or Linux Wireless archives): Some older Atheros or Realtek chipsets perform more