XPS 13 7390 disconnecting Wifi

Welcome to the Dell Community  @GedoG 

Killer brags about being the fastest networking WiFi there is.

It can be when it is stable!!!

But so many people have posted about the instability.

From what I can remember this is what to do.

Create a folder on your desktop and name it "Killer"

Download the latest driver from Killer and copy it to that folder you just created.

https://support.killernetworking.com/software/

Then go to "Device Manager" and uninstall the WiFi card.

Check the box to "Delete the software for this device."

Then reboot.

After rebooting go to the folder you created and install the driver from there.

Best regards,

U2

I'm having the exact same problem.

I got my first XPS 13 7390 replaced 2 days after I got it, and the new replacement is behaving exactly the same way.

I have tried the wifi connection on three different networks, all 1 Gbit/s fiber, where I get 300-800mbit/s with other devices (including my 3 year old cellphone). However, the XPS fluctuates 0-2 Mbit/s downstream and below 0,5 mbit/s upstream.... its awful

I've upgraded every possible driver (from dell's website) with no luck.... still waiting for reply from dell support.

OK, I'm an electrical engineer so I thought I'd do some proper investigating. I eventually found that when my brand new Dell lost it's wi-fi connection other devices on my home network also did at the same time. Took a while to figure that out. Today I did some troubleshooting tests to confirm how well our wireless router was working. I must say I suspected the radio in the router since a laptop connected vie ethernet to the router kept it's connection just fine. So I did a simple test next. I turned off my Dell COMPLETELY (i.e. not "sleep").  Surprise - over an extended period my wireless network was back to being rock solid! My home network has been suffering since the day I started using my new Dell laptop! Some online searches found that others have had problems with their Dell laptops interrupting their entire wireless networks just like mine! It looks like the "Killer" wireless card Dell uses has been the cause of the problem, according to what others have found. The thing is that I see those problems appearing in posts going back TWO YEARS. So why is even the newest version of the Killer card STILL clobbering wireless networks. It's not just the Dell laptop that loses it's wireless connection on our network for me and I suspect it's the same for many of you also. Any suggestions from Dell or the Killer maker as to how you plan to fix this? Workarounds would also be welcomed!!

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@ Not applicable, I wish I could help but I have a 1650 I installed myself and have had no such problems with it.

Since there seems to be no further things you can try, I might suggest you look for one of the recent threads with the Killer Wireless rep has left options to contact them directly.

I installed the Killer suite because I can check the wireless signals in my area to see if something might be interfering.

If you have physically checked the antenna connections, I don't really see anything you haven't tried, so going to the OEM for help would be your best choice.

OK, things are looking much better for my situation now. Following a "Dell Update" and turning the laptop completely off (not sleep) my wireless network has been completely stable for two days now. I gotta say I was surprized at how seriously impacted the network had been however I can only guess the Killer subsystem must have been operating in some strange mode (that was hammering the wireless router) and was reset properly after a power cycle. I will add that the Dell rep was very prompt and attentive in following up on my problems.

Same problem here.  I have downloaded new Killer drivers and updated them.  I have run the Dell Diagnostics, but I keep losing wireless every 10 minutes.  It's enraging, and I am typing this on my old Lenovo. 

How do I get my xps 7390 replaced?

How exactly did you fix it?

I have the same situation as you. Could you kindly email me as to what this "Dell update" is that you spoke about?

Thank you very much in advance!!

I purchased my XPS 13 7390 about 3 weeks ago and having same issue.  The wifi has stopped working a few times, but I've been able to reboot and most the time it starts working again.   I called Dell and they immediately sent a replacement, which just arrived. 

Now I'm really hoping same issue doesn't occur on the new one.

@adbomaha did you get a reply? I'm having a similar issue with my new XPS 13 7390 except in my situation it looks like the wifi device has gone completely dead. I've tried all the fixes like downloading the latest software etc. etc. and nothing fixed the issue. I'm also at the point where I want to return the device (and the Dell Latitude 5591 I'm typing this on) out of sheer frustration. I sent a service request to Dell, but already wishing I bought a mac instead.

Hi,

Greetings!

I would like to know did you get a chance to observe the system and hope that you had a chance to work on it to check if the issue is resolved.

-Vivek

I am having a similar issue with my 7390 with Killer wifi, except mine only disconnects once shortly after coming out of sleep, then it's stable the rest of the time.  It will connect for about 30 seconds, then disconnect for about 30-60 seconds, then connect and be fine.  I just installed the latest wifi driver and BIOS