Hi,
I’m on a lenovo t14 gen 4 AMD, with Debian 12 as desktop.
I’ve compiled my own kernel on this thing (6.6.7) to get the latest AMDGPU drivers.
I do have some issue with the GPU. When connecting an external (4k) monitor, i get issues quickly. On the laptop itself it’s fairly stable, although i do get the odd crash.
In most cases, the “crash” means that gdm restarts. Sometimes the machine reboots.
It’s supper annoying because i’d like to have a stable laptop. What was more annoying is that it wasn’t predictable as well, so i had no lead to start troubleshooting this.
Now, i started working on a little lvgl hobby project and i wanted to check out squareline studio.
Low and behold, i now have a reproduction for a reboot 
When i start squareline, it starts loading and then my laptop reboots.
Now, i don’t blame squareline for this at all, because I think it’s the amdgpu drivers.
However - how would i approach debugging/troubleshooting this to get to a point where my laptop runs fine