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Networking issues (desktop mode)
(lemmy.world)
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this post was submitted on 09 Jul 2025
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I've had this issue with a crappy monitor. Whenever I plugged my laptop into the HDMI cable to that particular monitor, the WiFi practically died. I think it's because the cable or the monitor acted like an antenna, but a properly shielded cable shouldn't be doing that anyway, so who knows what the culprit is. All I know is it was either the old monitor or the cable itself.
I'd start by slowly excluding the hardware one by one. It you're using some third party dock, that dock could very well be the reason why the WiFi dies.
Holy. Fucking. Shit.
This was it.
Here's my ping output. You can see where I unplugged and replugged the HDMI cable. Absolutely not in my wildest dreams would I have thought of this. Thank you so much.
Tech is silly sometimes.
Would have never expected that, I'm glad I came back to this thread to see if you had made any progress. Searching online about that, sounds like it's actually a somewhat common issue (that I had never heard of before now). Basically the advice is to try a better quality hdmi cable, swap to 5ghz wifi (which is less likely to get interference from this than 2.4Ghz), route the hdmi cable different to have more space between it and the deck, or add ferrite cores around the ends of the hdmi cable.