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.
This looks like a hardware issue to me.
RAM or Video card issue. Are you SURE the entire machine actually locks up, or just the display? Try ssh’ing into the machine when this happens to see if it’s actually staying alive, though the display stops working.
yeah, entire machine locks up. Yeah have tried ssh’ing from mobile and it was stuck one time when i did that during a freeze. have replugged RAM let’s see if system freezes again,
Idk how useful this is but that looks like when i had bad RAM, or like when RAM becomes unseated. You could try reseating your RAM, YMMV.
It’s not happening when you try to initiate sleep mode, is it? I have a computer that only ever does something like this when I try to use sleep. I’ve basically just stopped using that feature because nothing I tried ever fixed it. Works completely fine otherwise.
