Netgear R6220 Missing WiFi tab [SOLVED]

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DJPZOU
DD-WRT Novice


Joined: 08 Feb 2021
Posts: 18

PostPosted: Mon Feb 08, 2021 20:35    Post subject: Netgear R6220 Missing WiFi tab [SOLVED] Reply with quote
Hi everyone,
I'm new here and I know little about DD-WRT Rolling Eyes so I came here in hope to find help for my R6220 Netgear router.

I have an old Netgear router that I'd like to use for isolating the connexion between my IoT devices and my PC/Smartphone/etc...

But as you guest it, IoT devices need WiFi and I can't have access to the WiFi settings because the tab is missing. Crying or Very sad

I've read in another topic that if the WiFi tab is missing it's because DD-WRT doesn't recognize the WiFi hardware, is it correct?

So, what can I do to get the WiFi tab to appear?

BTW: The first DD-WRT firmware for this router got released at the end of January so it may be because it's early access... first version: 01-24-2021-r45563
Here is some information about the router: https://wikidevi.wi-cat.ru/Netgear_R6220

Thank you in advance for the answers Wink
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kernel-panic69
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PostPosted: Mon Feb 08, 2021 22:09    Post subject: Reply with quote
I must've missed the commits to add the R6220 to the list of supported devices or had forgotten about them. If flashing the latest release ( https://download1.dd-wrt.com/dd-wrtv2/downloads/betas/2021/02-08-2021-r45711/netgear-r6220/ ) doesn't fix it, then the developer would need a serial console log and syslog to see what is going on.
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DJPZOU
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Joined: 08 Feb 2021
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PostPosted: Tue Feb 09, 2021 17:41    Post subject: Reply with quote
Ok so,
I did a factory rest, last update and finally factory reset, but I'm out of luck there 'cause It didn't change anything. Crying or Very sad

Moving on,
If I'm understanding correctly:
1) You need a log from the router via a TTL connexion?
If that's the case, I need to do a little bit of solder, like in this picture: https://wikidevi.wi-cat.ru/File:Pin_Serial_TTL_R6220.jpg ?
Do you have any idea of the baudrate?

2) When you say syslog, you mean the syslog in the Administration tab of DD-WRT, right?

BTW: I forgot to mention that in the stock firmware of the router the wireless was working perfectly, but after the router flash with DD-WRT I still get the WiFi LED to turn on despite the wireless tab not showing and detecting nothing with a WiFi analyser
kernel-panic69
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PostPosted: Tue Feb 09, 2021 17:57    Post subject: Reply with quote
1) Serial connection parameters: 57600, 8 N 1

https://openwrt.org/toh/netgear/netgear_r6220

2) Yes, either from the syslog tab under administration or by way of cat /var/log/messages via PuTTY / ssh / telnet session to the router.

Copy and paste each to a text file and attach.

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DJPZOU
DD-WRT Novice


Joined: 08 Feb 2021
Posts: 18

PostPosted: Tue Feb 09, 2021 20:25    Post subject: Reply with quote
Here are the files you requested. Hopefully, you can understand them better than me. Wink
kernel-panic69
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PostPosted: Tue Feb 09, 2021 20:48    Post subject: Reply with quote
I've forwarded this report to the developer by email with your logs. I don't see anything that blatantly stands out.
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BrainSlayer
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PostPosted: Wed Feb 10, 2021 5:24    Post subject: Re: [Netgear R6220] Missing WiFi tab Reply with quote
DJPZOU wrote:
Hi everyone,
I'm new here and I know little about DD-WRT Rolling Eyes so I came here in hope to find help for my R6220 Netgear router.

I have an old Netgear router that I'd like to use for isolating the connexion between my IoT devices and my PC/Smartphone/etc...

But as you guest it, IoT devices need WiFi and I can't have access to the WiFi settings because the tab is missing. Crying or Very sad

I've read in another topic that if the WiFi tab is missing it's because DD-WRT doesn't recognize the WiFi hardware, is it correct?

So, what can I do to get the WiFi tab to appear?

BTW: The first DD-WRT firmware for this router got released at the end of January so it may be because it's early access... first version: 01-24-2021-r45563
Here is some information about the router: https://wikidevi.wi-cat.ru/Netgear_R6220

Thank you in advance for the answers Wink


workaround. login with telnet/ssh
type:
insmod mt76x02-lib
insmod mt76x2-common
insmod mt76x2e
restart lan

now the wifi tab should be available (until next reboot)

next build will fix this issue. i just did not test the firmware on this device. it was just made by guess and i missed that the r6220 has a different wifi chipset

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kernel-panic69
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Posts: 14126
Location: Texas, USA

PostPosted: Wed Feb 10, 2021 7:19    Post subject: Reply with quote
If the above workaround works, you can insert those commands in your startup script and save it under Administration->Commands tab so that it survives a reboot. You may have to insert a sleep line at the beginning:

Code:
sleep 10
insmod mt76x02-lib
insmod mt76x2-common
insmod mt76x2e
restart lan

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DJPZOU
DD-WRT Novice


Joined: 08 Feb 2021
Posts: 18

PostPosted: Wed Feb 10, 2021 17:21    Post subject: Reply with quote
Yep, that did the trick and I get the Wireless tab working even after a reboot with the script on the startup.

But unfortunately I can't get the WiFi to work even with the default setting:
For example, when I'm in AP mode there is some activity on the LED, the router says that the radio is on and everything but I can't find the WiFi with my smartphone. And when in Client mode, it connects to the other router but it is very unstable, sometimes it finds a connection to the internet sometimes it doesn't.

I attach a SYSLOG of the router in AP mode.
kernel-panic69
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Posts: 14126
Location: Texas, USA

PostPosted: Wed Feb 10, 2021 17:29    Post subject: Reply with quote
Don't use autochannel. Not sure if there is a wi-fi settings post for Ralink/MediaTek, but you can use the basic, advanced, and QCA settings wikis as a guide:

https://wiki.dd-wrt.com/wiki/index.php/Basic_Wireless_Settings

https://wiki.dd-wrt.com/wiki/index.php/Advanced_wireless_settings

https://wiki.dd-wrt.com/wiki/index.php/Atheros/ath_wireless_settings

Not sure if today's release contains the fix for the wireless tab or not, but it is available here:

https://download1.dd-wrt.com/dd-wrtv2/downloads/betas/2021/02-10-2021-r45729/netgear-r6220/

You can flash and report status in this thread:

https://forum.dd-wrt.com/phpBB2/viewtopic.php?t=328167

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DJPZOU
DD-WRT Novice


Joined: 08 Feb 2021
Posts: 18

PostPosted: Wed Feb 10, 2021 18:04    Post subject: Reply with quote
Indeed, the latest version fixes the missing tab.

Even by choosing channel and not using the autochannel function, the wifi still doesn't work. And by choosing a fix channel I can't get the 2.4GHz and 5GHz WiFi to work together, right?
kernel-panic69
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Location: Texas, USA

PostPosted: Wed Feb 10, 2021 18:50    Post subject: Reply with quote
I never use the same SSID on both wireless interfaces. Not sure what you're referring to. The only time I use "mixed" and "auto" on a wireless interface is when I use it for anything OTHER than an AP. I'm sure the wikis cover settings for client, CB, Repeater, RB.
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DJPZOU
DD-WRT Novice


Joined: 08 Feb 2021
Posts: 18

PostPosted: Wed Feb 10, 2021 20:44    Post subject: Reply with quote
My bad,
After thorough analyses of the different wireless settings and selecting a channel, it seems that the 5GHz WiFi is working perfectly, but the 2.4GHz signal is very very weak, like against the antenna I get -67dB and after 3cm I stop receiving any signal...

And by saying cannot get the 2.4G and 5G working together, I mean that if I select a channel it is either between 1 and 13 for 2.4GHz or 36 and 165 for 5GHz. So, I can't get both working simultaneously like in the stock firmware
kernel-panic69
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Location: Texas, USA

PostPosted: Wed Feb 10, 2021 21:13    Post subject: Reply with quote
I'd be wondering if one of the default settings in basic or advanced wireless is not correct for the hardware. You may have to tinker around with the settings on the 2.4 band to get it working properly.
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DJPZOU
DD-WRT Novice


Joined: 08 Feb 2021
Posts: 18

PostPosted: Wed Feb 10, 2021 22:30    Post subject: Reply with quote
Ok, I'll try to tinker with some WiFi settings to make it works, I think that I'm not the only with this problem.

Anyway, thank you so much for helping me mates, I hope I didn't bother you so much for that. Like I said I'm not familiar with DD-WRT, it's so much more powerful than the stock firmware
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