CLEVO PC50DF1- Wifi Drops when HDMI is connected to TV

Hi all, as the title say, i have this issue, everytime I connect my laptop by HDMI cable to my Samsung Full HD 32", my wifi connection drops. As soon as I disconnect the cable, my Wifi will work again. I hadn't this problem before, with my Macbook Pro 2012, using the Thunderbolt adapter to HDMI. I tried several cables, but the problem remains, wheter i use a 5Ghz connection or a 2,4 Ghz. Any clue?
Thanks very much

 

Only thing I can think of is an IRQ or driver conflict. Typically though a display driver and wifi driver don't compete with each other.

Check event manager after you plug in the HDMI for any errors to pin it down.

 

Thanks for your feedback. I checked the wifi properties, without connecting the HDMI cable my wifi speed is 866/866 mbps, while as soon as i plugin in the HDMI, the connection drops to 58/26 mbps. Using the event manager, where should I look in order to find any errors?

 

So, it's not dropping completely but just a reduced speed?

Sounds like maybe the HDMI cable/port is causing interference.

 

In case the HDMI Port causes interferences, what can i do? I've bought a new cable few days ago, in order to avoid any interferences, bit It didn't fix the problem. The weird fact Is that sometimes the connection reduces the speed a lot, sometimes it drops completely. Later i Will check the event manager, so i can tell you if there are any errors.

 

I recently tested out a few 8K cables and landed on Bphuny brand as the most stable. Got a 10 foot cable for $10 after discount.

The whole wifi thing though is odd. It might be worthwhile deleting the drivers and installing the newest drivers. If that doesn't work then pop it open and check the antennae cables.

Event Viewer should give a better idea of what's going on if it's system related when adding/removing the HDMI cable. If nothing regarding WIFI shows up during testing then it's more of a shielding issue with the cable being used or the antenna wires;

 

So, here it is the event viewer of my pc once i´ve connected the HDMI cable:
It's plenty of network errors ineed, any idea on what´s wrong?

 

Hmm... so it looks like you're using the Killer version of the AX200

When I was using the AX200 it seemed fine most of the time but when I switched to the AX210 w/ 6E enabled it's been performing a lot better when it comes to stability and throughput even though it's using the same network as the AX200.

"Internal Error" doesn't translate too much more than it's having some indigestion and needs some Pepto. I would go to intel and download the driver assistant and let it bring all of your drivers up to date for starters to see if anything shakes out in the realm of stability. If that doesn't fix the issue maybe swap out the card for an AX210 instead. I'm seeing less lag within my network even through ideally they should be pretty much identical other than enabling the 6Ghz band on the chip which doesn't have a SSID to connect to yet.

Killer products are Intel w/ modified drivers to do some magical things that sometimes pose issues instead of benefits. Getting rid of the killer driver and using the intel driver instead might resolve it as well.

Nothing in the logs stands out though as to the root cause of why it's dropping out specifically.

 

Thanks man, i'll try swapping to AX210, let's see if something changes, i keep you updated

 

Meanwhile i made another try, by using an adapter from USB-C (Thunderbolt 3) to HDMI, plugging the HDMI cable from the adapter to my TV and you won't believe it...the wifi works perfectly! No signs of dropping nor limited connection, so it seems the issue is related to my HDMI port on the pc..

 

HDMI adapter can be a work around depending on how often you'll be hooking up the HDMI cable.

The antennae cables could be running past the port depending on the layout. See how it works out for awhile and if it's still an issue consider the AX210.

 

The ax210 will arrive today, i'm planning to do the upgrade soon, i suppose for the installation it's just a swapping cards, right? Then i download the specific driver and i'm done?

 

Yeah, swap the card / move cable leads and update drivers if needed. There's not really specific drivers for it vs AX200 there's a new option in the configuration to enable/prefer 6E.

 

Thanks man, i've just installed the new card, and works flawlessly. Today i'll check if something has changed with the HDMI port, otherwise i'm afraid i'll get used to the adapter

 

Hopefully it works better in both scenarios. It will be noticeable on the network side w/o the HDMI issue factored in.

 

Just checked now if something has changed by installing the AX 210 card, and now i dont have ánymore the íssue of the wifi dropping, by using the HDMI port. Problem solved finally! Can't thank you enough for your advice!

 

Glad I spotted the thread and provided a complete solution.

It amazes me how sometimes we all go in at least 3-5 directions of where the issues lie to find the simplest solution to be the right one. There's something about the AX200 while "innovative" it's still buggy in the underlying HW or SW just enough to cause downstream issues with other components. I found it to work perfectly fine for long periods of time and then just foul up for a couple of days and then recover. I also noticed a bit of a lag when moving files on a remote system from one folder to another which shouldn't transverse the AX in any way but changing to the 210 resolved that as well. I went with the 210 just because it was newer and offered the next step for 6E when the new AP's come out supporting it but found ancillary benefits of it providing a smoother wifi experience.

Now you don't have to worry about using the adapter when you want to hook up HDMI and that's one less point of failure to worry about. It's always easier to use things as they should work instead of having to work around them. My guess is the 200 has a conflict with the HDMI either through SW or HW IRQ sharing with the port when in use. All of these things tie together even in minute ways.

 

It really is quite odd as drivers should be able to deal with that sort of thing.

 

Yeah, well, that's not always the case.

AX200 drivers aren't fixing the issues with the cards. On the surface the cards work just fine until they glitch and if you're not observant with them you don't notice the issues they have. The everyday user probably wouldn't attribute small issues like a 1-2 second lag to an issue with the card or drivers but, swapping the card to a AX210 removes that issue. Apparently there's also a conflict with other system devices as observed in this thread.

You have to admit the release time between the two cards was pretty swift by Intel not only to add 6E functionality to an AX device that was just released a few months prior. It would seem Intel spotted some issues and corrected them in the 210 rework and will probably phase out the 200 design fairly quickly.