Raspberry Pi 4 WiFi stops working at 2560x1440 screen resolution:
It's the Hifi, that kills the WiFi.
Keep it low, or you'll surf slow!
@fribbledom probably the bit clock, which is near 2.4GHz Wi-Fi frequencies
@fribbledom sounds to me like, if it is em interference, all they gotta do is raise the resolution enough to get the interference back out of the wifi bands! :D
@fribbledom This comes like 3 days after (I found out) the BCM43438 on my raspberry pi 3 randomly died, leaving me dependet on a usb dongle once more for my mediacenter.
@fribbledom oh technology, such a dumpster fire.
@fribbledom This and many other points are why pine64.org is better solution. You PCIe and Sata, and even in some configurations a lower price. In Addition, pine64 is real non-profit and not holding millions of pounds.
@Parnikkapore I would rather ask such things at pine forum. But when you use the panfrost driver, it should be possible. Or maybe you could get some PCIe card?
@fribbledom Sounds like an interference issue. No idea though.
@fribbledom I saw this and casually mentioned to my lab colleague (who does research with antennas), and before I finished explaining he guessed "must be the HDMI cable, that is kind of a known issue but little publicized".
He once saw a talk by a telecom engineer that was doing measurements and there were random peaks on the internet band - and it was whenever high resolution videos were playing. Apparently HDMI needs too much band on higher resolutions, and uses internet frequencies.
@eldaking @fribbledom So shielded HDMI cabled would help?
Also, does this affect other hardware, or just the Pi because components are unusually close to each other?
@fribbledom could this be some undesired byproduct of destructive interference of HDMI signal going through the cable... so the connected cable becomes an antenna that jams legit WiFi data packets? 🤔
@fribbledom so no 4K on Raspberry 😂
Actually, if I'm reading this right, 4k isn't a problem. 2560x1440 is.
@fribbledom though monitor capable of handling 4K is much more expensive than Raspberry
Nah, I just bought one for less than 2 Euros and it works just fine.
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