chris pollock: >" when I experienced the lockup last nigh the 'Hangcheck .......' error was >not anywhere in my syslog, does this mean anything?"
If one does not attach a log from /var/log , or captured through alternate methods, that contains either a kernel call trace, xorg backtrace, or at least the hangcheck originally reported, then it's largely useless unfortunately. >"Did my dmesg attachment show anything?" Unfortunately, it did not show any of the three things above. It is not terribly uncommon for nothing of value to be printed in any of the logs during a complete system lock. You may have better success capturing helpful information utilizing the capture methods noted in https://help.ubuntu.com/community/DebuggingSystemCrash . >"it mentions building a kernel from scratch, I take it that that is a requirement to do this?" Yes. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1402331 Title: System will periodically lockup with [drm:i915_hangcheck_elapsed] *ERROR* Hangcheck timer elapsed... render ring idle To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1402331/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs