USB-C CC1 signal, Random 4k/60Hz monitor dropouts

Thread Starter

Kevil

Joined Jun 28, 2020
177
I'm trying to figure out why my 4k/60Hz monitor connected to my laptop with a USB-C cable randomly drops out for a while. A short-term outage usually occurs after more than 1 hour.

In the picture, I measured the CC1 signal of the USB-C connector. Does anyone know from the signal what is going on there? Vbus voltage is 5V.

USB-C_CC1.png
 
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