[ROC-RK3568-PC][Wifi] Bandwith limited to 20MHz

Javier

Hello, did you use openwrt system? openwrt of 3568 supports HT20 and HT40, so it is not the issure to kernel.
so you can try to edit your hostapd.conf, set hw_mode to "g". this is a hostapd.conf for openwrt for examples:

1. driver=nl80211
   
2. logger_syslog=127
   
3. logger_syslog_level=2
   
4. logger_stdout=127
   
5. logger_stdout_level=2
   
6. country_code=US
   
7. ieee80211d=1
   
8. hw_mode=g
   
9. supported_rates=60 90 120 180 240 360 480 540
   
10. basic_rates=60 120 240
    
11. beacon_int=100
    
12. dtim_period=2
    
13. channel=1
    
14. chanlist=1
    
15. 
    
16. 
    
17. ieee80211n=1
    
18. ht_coex=0
    
19. 
    
20. radio_config_id=570b89ac214840092cda49c8238746df
    
21. interface=wlan0
    
22. ctrl_interface=/var/run/hostapd
    
23. ap_isolate=1
    
24. disassoc_low_ack=0
    
25. skip_inactivity_poll=0
    
26. preamble=1
    
27. wmm_enabled=1
    
28. ignore_broadcast_ssid=0
    
29. uapsd_advertisement_enabled=1
    
30. utf8_ssid=1
    
31. multi_ap=0
    
32. auth_algs=1
    
33. wpa=0
    
34. ssid=OpenWRT-95D4
    
35. bridge=br-lan
    
36. wds_bridge=
    
37. snoop_iface=br-lan
    
38. config_id=fa5f1619a6f9b1243fc2d154a4127dc4
    
39. bssid=00:00:00:00:00:00

Copy the code

Javier

please use wl to show wifi status
```
root@FusionWrt:~# ./wl status
SSID: "OpenWRT-A046"
Mode: Managed   RSSI: 0 dBm     SNR: 0 dB       noise: -95 dBm  Channel: 36/80
BSSID: 10:2C:6B:7F:A0:46        Capability: ESS
Supported Rates: [ 6(b) 9 12(b) 18 24(b) 36 48 54 ]
VHT Capable:
        Chanspec: 5GHz channel 42 80MHz (0xe02a)
        Primary channel: 36
        HT Capabilities:
        Supported MCS : [ 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 ]
        VHT Capabilities:
        Supported VHT (tx) Rates:
                NSS: 1 MCS: 0-9
                NSS: 2 MCS: 0-9
        Supported VHT (rx) Rates:
                NSS: 1 MCS: 0-9
                NSS: 2 MCS: 0-9

```