sudo iw reg set BRiw reg getOutput:
global country BR: DFS-FCC (2402 - 2482 @ 40), (N/A, 20), (N/A) (5170 - 5250 @ 80), (N/A, 17), (N/A), AUTO-BW (5250 - 5330 @ 80), (N/A, 24), (0 ms), DFS, AUTO-BW (5490 - 5730 @ 160), (N/A, 24), (0 ms), DFS (5735 - 5835 @ 80), (N/A, 30), (N/A)
Descomente a linha que possui BR
sudo nano /etc/conf.d/wireless-regdom