Re: FreeBSD 8.0 amd64 with 8GB RAM (deadlock)
Interesting, thanks for the update. The 195.36.15 driver release does not yet support MSI (it ignores the sysctl knob), nor should it make use of MTRRs; so there's a chance that the problem you're seeing is a system-level one. I believe we've seen one hang on PC-BSD with an 8.0-RELEASE-p2 kernel that may be consistent with yours; when I find some time, I'll take a closer look at that.
In the meantime, can you dump your system's static/dynamic MTRR configuration with 6GB/8GB just before starting X?