Installed an ASRock X58 Extreme3 motherboard, so far the following results:

Linux Kernel 2.6.34

• basic function works out of the box (as expected!)
• hibernate (suspend to disk) breaks
  • should work if you unload xhci_hcd (USB3)
• suspend to ram (mem) suspends, but does not resume
  • caps lock & scroll lock LEDs flash on resume
  • diagnostic LED shows 24
  • pm_tests pass
  • pm_trace hash matches drivers/base/power/main.c:564
• sensors shows some coretemp temperatures
  • W83677HG-I has no driver (would be needed to read fan speed, vcore, etc.)
• couldn’t find any controllable fan (BIOS can control 2 pwm fans and 2 voltage fans, but only manually except CPU fan)
• system clock is way too slow! It lags 10 minutes just after 2 hours of operating. hardware clock seems to be fine though(?)

maybe not related to the board

• Sony photo camera is not recognized as mass storage unless rmmod -f usb_storage && modprobe usb-storage after connecting; somewhat annoying.

not used yet:

• USB3
• SATA3 (6Gb/s)

overclocking experiments

• can easily adjust QPI / core speed in BIOS.

random thoughts

• I feared most the northbridge cooler fan; but it is perfectly silent (to my ears).
• ECC ram works as advertised
• remember to turn on virtualization features and turbo boost stuff in BIOS (everyone would check that, I guess)
• direct BIOS flash from USB is very convenient
• use amidmi or amidedos to edit dmi data