Opened 3 years ago

Last modified 3 years ago

#19689 new defect

5 GHz not working on WDR3600

Reported by: cyablo Owned by: developers
Priority: normal Milestone:
Component: kernel Version: Trunk
Keywords: Cc:



im using two TP-Link WDR3600 with identical configuration as dump AP's.
Both have configured two VLAN seperated WIFi's on 2,4 GHz & 5 GHz each.

Now i updated to the latest trunk version r45695 after running an earlier trunk for weeks. I noticed that my 5 Ghz WiFi's are now not coming up again on BOTH devices. Config seems fine, nothing has changed.

Luci shows the WiFi's changes mode between unknown and master on start and end up as mode client, but are configured as Access Point.

Here is my System-Log:
There is a "Interface initialization failed" Error for wlan1 (5 GHz)

/etc/config/wireless :

iwinfo shows:

wlan1     ESSID: unknown
          Access Point: 00:00:00:00:00:00
          Mode: Client  Channel: unknown (unknown)
          Tx-Power: 15 dBm  Link Quality: unknown/70
          Signal: unknown  Noise: -91 dBm
          Bit Rate: unknown
          Encryption: unknown
          Type: nl80211  HW Mode(s): 802.11an
          Hardware: 168C:0033 168C:A120 [Atheros AR9580]
          TX power offset: none
          Frequency offset: none
          Supports VAPs: yes  PHY name: phy1

I dont see the Problem here. I managed to get it working again once by messing with the Interface Modes Monitor, Client and back to Master, enabling, disabling them but after a reboot, they dont come up again.

Attachments (0)

Change History (3)

comment:1 Changed 3 years ago by anonymous

Your wifi config is missing "path" , and it has some old options too. reset your router and reconfigure all over, dont use saved backup.

comment:2 Changed 3 years ago by cyablo

Sorry, but the problem seems to be elsewhere.

Yesterday i played a little bit with the settings, turns out it is working if i set a fixed channel and don't let OpenWRT scan for the best one.

Looks like the DFS-CAC check finds a good channel at #132 / 5660:

DFS-CAC-COMPLETED success=1 freq=5660 ht_enabled=1 chan_offset=1 chan_width=2 cf1=5670 cf2=0

But the channel 132 with 5660 MHz is not available within Luci. Only 36 to 48 which goes to 5240 MHz for #48.

Automatic channel selection does work and the interface comes up if i select world under region and not germany. There seems to be some missmatch.

Last edited 3 years ago by cyablo (previous) (diff)

comment:3 Changed 3 years ago by anonymous

I also had some problems. I couldn't use channel 165 for some reason.

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