23.05.x : wireless not associated

Installing and Using OpenWrt Network and Wireless Configuration
1

Hello.

Since I have installed on the Dlink2640 the 23.05.x I noticed a strange effect on the wifi 5GHz (MediaTek MT7615E 802.11ac/n).
If I change the country, channel, power or bandwidth, I get that only the main wifi 5GHz works, while for all the other wifi 5 GHz I defined returns error of "wireless not associated".
I also noticed that, if I keep everything at default and I enable the 160 MHz channels, after 5-10 min, the wifi disappear and I get again the same issue.

This was not working with the 22.03.x, so I guess it's a matter of drivers. Is there any log I can share to help diagnosing the issue?

This is what I see (I tried with Canada as country, just as example)

Mode: Master | SSID: <edited>
BSSID: <edited>
Encryption: WPA3 SAE (CCMP)
Channel: 0 (0.000 GHz)
Tx-Power: 24 dBm
Signal: 0 dBm | Noise: -92 dBm
Bitrate: 0.0 Mbit/s | Country: CA

I did a clean installation of OpenWRT 23.05. and 23.05.02 to be sure it was not a problem of updates.

2

MatteoDXB.

As stated on: https://openwrt.org/toh/d-link/dir-2640_a1
At the bottom is written: MT7615N 5 GHz Problems - see [Solved] OpenWrt on MT7621/MT7615N devices with 5GHz problems

So better read this 1st and see: The 22.03.3 Stable release appears to have least amount of problems as of January 2023. But, expect a loss in routing performance since it does not include arinc9's patches.

Conclusion: There are some issues regarding 5GHz Wifi, so better stay on 22.03.3

DG.

3

I don't think 160 MHz is possible. MT7615E 160Mhz available or not?

4

Ive also experienced 5ghz not working on 23.05.2 on my pi4 using a mediatek mt7612u dongle. 5ghz works well on 22.03.5. This is in STA mode, i have not tested ap mode.

5

Thank you both for the clarifications.

6

I made multiple trials and I finally made it working (on the 80MHz). I had to select the channel 149, so that I can set the 24 dBm (the maximum of the router).

Mode: Master | SSID: <edited>
BSSID: <edited>
Encryption: WPA3 SAE (CCMP)
Channel: 149 (5.745 GHz)
Tx-Power: 24 dBm
Signal: -53 dBm | Noise: -92 dBm
Bitrate: 837.7 Mbit/s | Country: CA
7

I did a quick test on a DIR-2640 rev.A1 running stable release 23.05.0; several weeks? ago and did not encounter any issue during the three days I had it available to me.
Packages included were irqbalance, banip and adblock.

With that said,
I did not try WPA3 but configured with WPA2-PSK (AES) and due to high wifi density in the city, did not bother with 160 channel width and instead kept it at 80.

Good luck.

8

The issue happens not on the primary wifi, but on the others.

On the 5GHz I have 3 wifi: 1 for the ISP, one that connects, via Wireguard, to my router in Italy and another tht connects to a server I use often.

The first one is fine, the second and the third one have the issues.