Hello, I switched recently to OpenSUSE Tumbleweed from 12.2 and I meet this strange problem, that is the kernel gets hard lockup whenever I plug the AC Adapter in, after that the watchdog tried to shutdown the locked up CPU and I have kernel panic. I tried to look around for solution but couldn't find any, so if anyone can give me a pointer on how to gather more information about this behaviour (so I can file a proper bug report), or even better, a solution, I would appreciate that. Here is a few things I noted: - The lockup only happens with Linux 3.7.1, version 3.2 to 3.5 are trouble-free (I haven't tested with version 3.6 yet) - The backtraces that is shown when the lockup happens are mostly NMI watchdog's, although sometimes there are more backtrace for other CPUs as well (mostly related to hrtimer stuff). - Even if I suspend the computer before plug the adapter in, the lockup still happen right after resuming. Disabling X and using the single user mode don't help either. - Interestingly enough, plugging in before mounting root is fine, that mean the culprit is loaded later, but I don't know how to find exactly which module is causing it (no information from backtrace). Of course, reverting back to OpenSUSE 12.2 will help, but I would like to solve this if possible, after all I can't stay with 12.2 forever. Thank in advance! -- To unsubscribe, e-mail: opensuse-factory+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse-factory+owner@opensuse.org