i didn't know that (now i know, thanks!) but usually it didn't result in a panic, so it might not have worked. maybe i'd have to turn lockups into panics by a kernel parameter but in case of hardware issues you can't really reproduce stuff consistently so it'd be up for chance when this random panic happens, but maybe it's worth trying. there's also situations where the device isn't responding but i'm not sure if even a lockup happened, which is even more annoying. but i'll surely try this next time i get into a situation where i want to debug a kernel crash!