"[mi] EQ overflowing. The server is probably stuck in an infinite loop."
I am running xorg-server 1.9.2 on Gentoo Linux using Nvidia's driver 260.19.21. I have been encountering issues with random lags where the X server freezes temporarily and then comes back. Some times, it never comes back.
With Nvidia's 260.19.12 driver, I could not recover from this condition. Either my system would be rendered inaccessible over the network or its ping times would spike from less than 1ms to anywhere from 500ms to 3000ms. Attempts to ssh into the system when in either state would fail. With the current driver, I was able to ssh into my system and restart xdm.
As a consequence, I was able to capture information regarding this condition in my x server log, which I have attached to this post.