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Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).
Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word "Linux" in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.
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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.
I have a similar issue specific to my Intel graphics, debian 12, and kde. It's fixed in the newer kernel in debian Trixie. In my case I was able to set up a keybind to ctrl-alt-backspace which kills the graphics server. I have to catch it quick or it'll lock up completely, but it's something to try. I'm on 15 days uptime now I've probably had to do that about 5 times.
Oh, thats very helpful. Thanks
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.