USB-C Display stopped working

[soundofthunder]

@Stefanqn

This setup was working for nearly 3 years now.

That being the case, it might be prudent to post your full system information to enable others to help you diagnose the issue.

[HowTo] Find system information

Difficulty: ★☆☆☆☆ Rather than providing the commercial reference of a computer or piece of hardware, it is usually better to directly ask the system to describe itself. On top of saving time to everyone, this also often provides more details, including something specific to the running system. Below is a (not exhaustive) list of commands for retrieving system information. If you don’t know how to use those commands, or how to provide them to support, see: [HowTo] Use the terminal / TTY …

Have you changed anything recently, either hardware or in configs?