@Joseph-TP @Corpski 

 

Hi guys,

 

Appreciate your help to chime in. This evening, my SSIDs all disappeared after I am back from dinner. My cleaning robot running 2.4Ghz also lost connections. I checked my Android and my son IPhone and confirmed all SSIDs are down. My laptop is wired and is able to login. I checked the client and confirmed no wifi client. Only wired with my laptop and NAS.

I went ahead to disable MU-MIMO and reboot the router. I will monitor and will try to provide updates if any.

 

As for my setup, Fiber -5Gbps-> ISP Fiber router -> 10G UTP -> TPlink Archer -> Wired+Wifi clients.

 

Cheers!

Wee Hong

To add, I would like to check if I should also disable TWT. May be the router send my phone to sleep and did not wakeup. :)

  @Iainyeo 

I personally have never turned this option on. I guess you can leave it on and check to see if anything adverse happens.

 

Personally my longest stable running up-time without MU-MIMO was almost 80 days, which was halted due to updating with this new firmware.

  @Joseph-TP

Hi Joseph,

 

After I disabled MU-MIMO, the issue improved a little. The SSIDs did not disappear, to be exact, I do not need to reboot my router for the past few days. However, when I get back home or wake up in the mornig, my wifi connection jumps to the 2.4Ghz. May be my bedroom is far from my router and it chose to connect to the 2.4, that is normal. The peculiar thing is that when I go to my phone settings and try to select back the 5Ghz SSID, it is not where visible and I am standing right in front of the router. 

 

It occured to me several times, that is why I tested for the past few days and decided to update you now. And everytime, I have off my wifi in my phone and then renable wifi and it will then connect back to the 5Ghz SSID.  I am using Android phone to be exact.

 

Again, before this code upgrade, I did not have such experiences. If your engineer can re-produce this issue, that would be great. 

 

Thanks!

Oic, I have also disabled it.

  @Iainyeo 

5 ghz is really not able to penetrate anywhere as well as 2.4 ghz. If the walls in your house are cement or concrete, the best bet you have is to find a way to extend ethernet cable into your room and to install another 5 ghz capable router (more desirable than a repeater but a repeater is workable). That way there won't be any issues with your wifi signal strength. As for sticking to 5 ghz or switching to the 2.4 ghz channel overnight, my guess is it's a multitude of factors, including the device's low-power preference and what the average signal strength your 5 ghz network has in your room.

  @Corpski 

Hi, sorry I may have confused you. The issue is that my 5Ghz SSID disappeared now and I have to off/on wifi in my phone to get it connected. I did refresh a few times without success. This is the new observation I am sharing after disabling Mu-MIMO. Thanks!

  @Iainyeo 

Do you mean the SSID disappeared, and switching your phone wifi to off and then on makes it appear again and you are able to connect immediately afterwards? If so, then the SSID doesn't really disappear and it's there all along. Your phone drops the connection to the 5ghz network in that case (could be a signal strength or preference issue).

 

However if you mean the SSID disappears and it simply cannot be found without a router reboot, then it's definitely the router that is the issue. It would be unlike my experience with MU-MIMO off however.