Re: [BUG] nvidia crashes kernel with 'Xid 13' and attempted to yield the CPU while at
OK, obviously such symptoms could be the result of different underlying problems, but...
in my case, what *completely* cured the problem of random freezes and Xid messages (after weeks of painful experimentation) was removing all kernel modules that have to do with thermal sensors. I have also disabled all the relevant plugins from gkrellm, in order to prevent such modules from being loaded automatically.
The system is rock solid now, running for 2+ days straight under KDE+composite without a single glitch.
I suspect that some such program or kernel module is periodically polling/generating interrupts under nvidia driver's nose, messing up the interface. It would be nice if someone could debug this to the end, though.
Hope this helps,
CentOS 6 + KDE 4
GeForce GTS 450