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.

  • Skull giver@popplesburger.hilciferous.nl
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    4 months ago

    Could be hardware (chips desoldering themselves, data cable shorting out when heating up, broken RAM), could be software (driver issue, IOMMU configuration, etc).

    I would start with testing the memory chips. If those pass, I’d try a much newer/older kernel to see if that makes the problem disappear. If that doesn’t, maybe try running the OS that came with the laptop and verify that it’s a hardware issue. If it doesn’t happen on another OS, it’s probably some form. Of software issue; in that case you’d need to catch the crash somehow, like by plugging a USB-to-serial converter into a USB port, dumping the kernel output to that, and having a second machine monitor the kernel output while you try to trigger the crash.

    If all operating systems have the issue, reseating RAM and perhaps any important cables may also help.