Randomly on my laptop screen this appears and debian just freezes. Sometimes these vertical lines don’t appear and system freezes anyway. Its just random. How do i identify if this is hardware or software issue? and then how to identify exact piece of hardware or software causing this problem.
Np. Trying to find the exact page but I just checked the last logs in journalctl after each crash to determine that’s what it was. If you search Wayland + kwin + Intel GPU crash you get lots of hits. It can be fixed but now that I know it’s very specific to my setup and already fixed in future versions I’m not so worried.