I'm guessing the "AMD" 64 forum is the correct place for this. This is a cut/paste of a forum posting I made on linuxquestions.org this morning. I thought it might be more appropriate here. I find somewhat similar problems detailed here, but not quite the same thing I think.
I'm having problems and wondering if anyone can make any suggestions.
SuperMicro 6014H-X8 with 2 3.2Ghz 800FSB EM64T 2MB Xeon CPUs, 16GB RAM, Adaptec(DPT) i2o RAID, IPMI, etc...
So far I've tried various BIOS settings but currently am getting the best results with hyper-threading disabled. I also am forced to boot UP kernels. If I boot an SMP kernel it fails to boot all the way with lots of complaints along the way like "/sbin/consoletype: cannot execute binary file".
The last thing attempted was a minimal install, then booted up on the CD with "linux rescue" and set SELinux to disabled. Then if I boot the UP kernel it will boot but still has a few errors with LVM (which I didn't use anyway) and a few other things. It did boot fine and I was able to install all updates. Afterwards the newer 2.6.12 kernel still wouldn't work SMP but is in about the same shape UP.
So, are there known issues with EM64T I've not read about previously? With any of the other hardware in this box or perhaps BIOS or similar settings?
PS. I also have a few Sun v20z AMD64 Opteron servers successfully running FC3. Been very rock solid SMP so far until the most recent updates. The most recent 2.6.12 kernel fails to boot on them. Not sure how to report the "bug" or what all info to include, only saw this for a short while when at my co-lo site yesterday evening.
The SuperMicro 6014H-X8: