[Solved] OpenWrt on MT7621/MT7615N devices with 5GHz problems

[Warlock]

Thanks for the feedback madeizwar

[rakantoh]

I dont know if have relevance, but at least for me in my dir-882 A1, the latest snapshots and in the 22.03 rc5, the wifi 5 have problems, after a few minutes to 2 hours, the wifi 5 have no internet, then, and again, i dont know if have relevance, but the wifi hardware of the dir-882 A1 is the mt7615N, in both wifi radios, but the driver installed in the firmware is for the 7615/7615e, then, have this some revelance/importance for the bad wifi 5 performance?

[craz]

@rakantoh

the wifi 5 have no internet

The same thing happens to me too, I have tested several client devices and it happens with all of them.

For testing I also tried with my old DIR-860L and the same thing happens, exactly as they wrote here:

MT76 how to debug Wifi issues?

I have been using OpenWRT on the D-Link 860L since the 15.x releases and it is amazing that it still works while support from the manufacturer is long gone. OpenWRT kept it running, secure and with more features than the original firmware. Over time, the WiFi performance improved, but every now and then there is the 'connected, no data' bug. Unfortunately, there is nothing available is the syslog. How can I debug this issue? Any pointers on where to start are welcome.

How is it possible that after a long time it is still not possible to understand the cause?

[Warlock]

rakantoh and craz,
You can try the custom release by arinc9 and see if that helps.

His release should be using an older kernel and drivers...

[alcazaurus]

Anything that can go wrong, will go wrong - Murphy's Law
These wifi drivers are just fairly complex things to get working right at every possible situation. One would have to have a driver with additional debugging features enabled, wait for the bug to appear and then try to figure out what has happened. I am not sure you want to go there though.

[Warlock]

Update,
̶7̶ 25 days of using arinc9's release with no 5 GHz WiFi issues.

EDIT:
After 25 days of uptime with no 5 GHz WiFi problems, ceasing test.
Need to test some other routers ...

[mrleongalaxyum]

Will try it out on xiaomi r4a gigabit. I'm also having issues with "connected,no internet" (MT76x1E)

Also, which software do you use for hosting the files? I was playing around with wordpress in docker and nextcloud, however both seem inadequate to just serve a file tree from a folder.

[arinc9]

It’s caddy webserver. You can host a directory in just 2 lines of caddyfile configuration.

[mrleongalaxyum]

I still have the issue of "Connected, no Internet" very often

[craz]

Yes me too and in the end I gave up, I changed router and firmware.

[viniribeirossa]

I still have the issue of "Connected, no Internet" very often 2

[Warlock]

@craz

For testing I also tried with my old DIR-860L

To avoid confusion for others reading this topic,
The D-Link DIR-860L rev B1 uses MediaTek MT7612E WiFi chip.

[tassapan]

Thank you for all information. I'm still using Xiaomi MIR3P with 19.07.10.

[rakantoh]

i installed the arinc's release today, i will try a few days and i will comment if i have problems, one question, i guess that i must dont update any package, right? and other question, can i install adittional packages, example, luci upnp?

[Warlock]

@rakantoh

i guess that i must dont update any package, right? and other question, can i install adittional packages, example, luci upnp?

Should be fairly up to date already.

Should not be any problems installing packages, I've installed adblock/luci-app-adblock, unless they are not compatible due to changes. e.g. nftables is default so will not work with packages like banIP, which relies on iptables.

[Warlock]

For those interested,
Release candidate 6 for MT7621/MT7615 routers available for download.
Click HERE

[Warlock]

Update: 22.03.0-rc6
D-Link DIR-878 rev. A1

Currently, 8 days, 8 hours of uptime and no screams of anguish from users at testing location.

EDIT: Uptime updated.
After 8 days of uptime, ceasing uptime record.

[rakantoh]

unfortunately for me any version of this firwmare have bad wifi 5 performance, i will continue with stock firmware.

[Warlock]

rakantoh
Thanks for the feedback.

Just to confirm,
Issue was performance,
not
Connected, no internet or Address Not Found error(s)?

[rakantoh]

In my case, after a MINUTES, no hours, or maximum a one hour, the wifi 5 have very bad "performance", in other words, the internet is very slow, and after a while, nothing load, i must disconnect and reconnect to the wifi 5 to have again internet, this in both my phone and my pc, i comment that my wifi pc card is an intel 9260 wifi 5 160Mhz card, then my pc wifi card isn't the problem, anyway, in my phone persist the same, i dont know if in my device appears the message "connected, no internet", never watch if that message appears, but at least for me the problem is the same... if i have very slow/no internet in wifi 5, then is the same problem, with the stock firmware, at leasat the wifi 5 is very stable... other thing, with openwrt, some wifi 5 bands/channels dont works, if i select certain band/channel, the wifi 5 stop working, only works with certain bands/channels...