When I run log from the crash utility, I see this at the bottom of the log: : CPU 4: Machine Check Exception: 5 Bank 3: be00000000800400 PANIC: " Kernel panic - not syncing: Fatal Machine check" When I run apport-unpack on the crashed kernel file and then crash on the VmCore crash dump, here's what I see: KERNEL: /usr/lib/debug/boot/vmlinux-3.2.0-35-generic I've installed kdump, crash, and linux-crashdump, as well as the kernel debug symbols for my kernel version 3.2.0-35. The CPU is overclocked to 4.8GHz, but it's completely stable and has survived huge LINPACK runs and 9 hours of Prime95 yesterday without a single crash. If I put on a YouTube video in full screen and let it repeat for a while or scroll through a ton of GIFs and a Skype notification pops up, sometimes it'll crash. Triggering the crash is not so simple, it seem to happen when the GPU is trying to draw multiple things at once. I can't even seem to find a record of the crash at all. Here are a bunch of logs, the usual culprits. How can I find out what's crashing my system? On a hunch that it might be the proprietary NVIDIA driver, I reverted all the way down to the stable version of the driver, version 304 and I still experience the crash.Ĭan anyone walk me through a good debugging procedure for after a crash? I'd be more than happy to boot into a thumb drive and post all of my post-crash configuration files, I'm just not sure what they would be. How can I debug what's crashing the system? Crashes seem to happen at random times, even when the machine is sitting idle. Even in Linux, I can run LINPACK and won't see a crash despite putting ridiculous load on the CPU. This system is overclocked, but very stable as verified in Windows, which leads me to believe I'm having a kernel panic or an issue with one of my modules. Out of the blue, seemingly, X will freeze completely for a while (1-3 minutes?) and then the system will reboot. I'm running an Ubuntu 12.04 derivative (amd64) and I've been having really strange issues recently.
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