Wifi Connection is terminated when connection usb grabber to RPi4

[Gxinz]

Hello,

I have this strange issue where when I connect a USB capture card to my RPi4, it loses the Wi-Fi connection. Additionally, when I connect a Google Chromecast to the capture card, it also loses the Wi-Fi connection.

https://pastebin.com/P6H3r5Ym

[awawa-dev]

Hi
Most likely its a power supply issue. Check the dmesg logs on your system when you loose the wifi connection

[Gxinz]

yes i tested in on my pc in a 3.0 port. everything fine there

[awawa-dev]

and the grabber was working? interesting

[Gxinz]

yes was working

[Gxinz]

I know what the problem is. The rpi4 is basically a self jamming device for 2.4ghz wireless and Bluetooth devices when using usb3.0. I try to fix it by placing the Chromecast further away and test it again.

Here is the reference:
https://indilib.org/forum/general/6576-pi4-usb3-and-wireless-2-4ghz-interference.html

[Gxinz]

Connecter Chromecast via 5ghz wifi and now it works :D