cross-posted from: https://lemmy.ml/post/17750757
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.

5 Comments
vk6flab@lemmy.radio · 2 pts · 2y
Looks like a video driver issue.
awesome_guy@lemmy.ml · 1 pts · 2y
for context, i have been using debian 12 for last 6 months perfectly fine. Its just from last week my laptop is randomly freezing and then I have to hard reset it everytime this happens, (pressing power off button for few seconds to force shutdown).
vk6flab@lemmy.radio · 2 pts · 2y
Run memtest86 overnight from a USB stick or iso.
Danathar@twit.social · 0 pts · 2y
@awesome_guy I agree. I think it's some sort of hardware issue.
awesome_guy@lemmy.ml · 1 pts · 2y
Ok