ebenventer's profile

New Poster

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2 Messages

Mon, Jun 15, 2020 10:00 AM

Wifi dies when certain PCs connect

Hi, so I have a real head scratcher here...

 

Background:

I was an AT&T customer for the last year, moved in to my own place 2 weeks ago and carried the ATT service over with me, BUT, best they could do was 50mbps, so I cancelled and switched to xFi. Up to this point had no issues with any connectivity.

 

The story:

On Friday I received my gateway and all set up well, and worked for an hour or 2, then wifi suddenly dissappeared. At this point EVERYTHING was on wifi. Reboot the gateway, wifi returned. Saturday morning found wifi dead again, when in to the chat with a rep, he did some signal resetting, reset the gateway, did some stuff, and it worked, for an hour or so... Later on Saturday I returned the gateway and got the new X7 or whatever and from the start issues with gateway wifi. Again on the chat , spend an hour trying different things as per the rep online, eventually he gave up and booked a tech to come to the house, at that point I discovered that the wired network still has internet, just the wifi drops.

 

So I did some checking and narrowed it down to my 3 PCs, if any one of them connect/tries to connect to the wifi, I get a Cannot connect to the Network message and the wifi dies, only a reboot will recover.

 

Tech was here, tried 10 000 things, no luck and he left.

 

I did some more digging, so the 3 PCs have a TP-Link T9UH adapter each, I removed them and tried some old adapters I had in a drawer, UNBELIEVABLE it worked, wifi no longer dies.

 

Here is the thing, all 3 adapters worked 100% until I installed the Xfinity gateway, all 3 now does the same thing,  can't be 3 pieces went faulty in the same way at the same time, I will not believe that EVER!

 

I am convinced there are settings in the gateway causing this behaviour, but the available settings in this gateway are so limited that it might as well not have a login, where do I look for this?

 

THANKS!

Responses

New Poster

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2 Messages

1 y ago

So no one has any ideas/suggestions as to why the TP-Link T9UH Wifi adapter would crash the wifi on the XB7 gateway?

darkangelic

Expert

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2K Messages

1 y ago


@ebenventer wrote:

So no one has any ideas/suggestions as to why the TP-Link T9UH Wifi adapter would crash the wifi on the XB7 gateway?


Maybe you should check TP-Link support as this seems to be specific to that product, and they might have updated drivers or workarounds we don't know about? 

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Frequent Visitor

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5 Messages

1 y ago

Are you connecting to the 2.4 GHz, or the 5 GHz signal?

 

You may want to try and set the two bands to different SSIDs and see if that possibly fixes your problem.

 

I would also verify the drivers are up to date on your computers.

Visitor

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3 Messages

1 m ago

I ran into the exact same issue. I even bought a second wifi adapter, same issue. Neither will connect to Xfinity wifi. they both connect to my personal router I have connected via ethernet to the wifi router. The other 20 devices in my house will connect to my router OR the comcast router, but neither of the newer AC1900 wifi adapter will connect to Comcast.  Ridiculous I have to use an old USB2 wifi adapter to connect to Comcast, when I have Gig wifi in my house.

UPDATE: I was able to get Comcast to disable their Wifi6 on my router and BOTH of my new wifi adapters work now. That is DEFINITELY, a bug in their software they need to work out.

EG

Expert

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87.1K Messages

@tcoury 

Please create a new topic of your own here on this board detailing your issue. Thanks. Year old dead thread now being closed.

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I am a Customer Expert volunteering my time to help other customers here in the Forums.
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