Opened 3 years ago

Closed 2 years ago

#17726 closed defect (fixed)

ath9k: start_dfs_cac fails for Netgear WNDR4300

Reported by: BasicXP Owned by: developers
Priority: normal Milestone:
Component: packages Version: Trunk
Keywords: Cc:


When trying to use a channel that requires DFS, the wireless interface doesn't come up because of the DFS failure:

Configuration file: /etc/hostapd/conf.d/5GHz
wlan1: interface state UNINITIALIZED->COUNTRY_UPDATE
wlan1: interface state COUNTRY_UPDATE->HT_SCAN
wlan1: interface state HT_SCAN->DFS
wlan1: DFS-CAC-START freq=5260 chan=52 sec_chan=1, width=0, seg0=0, seg1=0, cac_time=60s
DFS start_dfs_cac() failed, -1
Interface initialization failed
wlan1: interface state DFS->DISABLED
hostapd_free_hapd_data: Interface wlan1 wasn't started

DFS has been enabled in the firmware build configuration file.

Firmware version: trunk r42344
Hardware: Netgear WNDR4300

Attached are the kernel log (dmesg.txt) and the hostapd configuration (hostapd.conf). Not using UCI for wireless configuration.

Attachments (2)

dmesg.txt (14.0 KB) - added by BasicXP 3 years ago.
Kernel log
hostapd.conf (1.1 KB) - added by BasicXP 3 years ago.
hostapd configuration

Download all attachments as: .zip

Change History (5)

Changed 3 years ago by BasicXP

Kernel log

Changed 3 years ago by BasicXP

hostapd configuration

comment:1 Changed 3 years ago by Stijn Tintel <stijn@…>

DFS only works with 20MHz channels for now. Can you try if it works with option htmode 'HT20' in /etc/config/wireless?

comment:2 Changed 2 years ago by karlsebal@…

As for me, it does not work even in HT20 mode

comment:3 Changed 2 years ago by nbd

  • Resolution set to fixed
  • Status changed from new to closed

should be fixed in current trunk

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