Quote Originally Posted by safan80 View Post
Have you guys tried turning off ULPS?

ULPS feature is enabled by default installing this driver, however you can edit this setting from windows registry,

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\Cl ass\{4D36E968-E325-11CE-BFC1-08002BE10318}\0000\EnableUlps

set 1 to enable ULPS
set 0 to disable ULPS

many users have another folders than 0000. I had 0000 and 0001. Some have had 0002, 0003 0004 etc. Where ever you find EnableUlps change it to 0 it fixed my lockups with everest and both gpus downclock to 157 with the 9.12 hotfix drivers

original source here.

edit: everest still hard locks the system everything goes blabnk on gpu1 and then it locks.

Thanks for this info...very valuable...

I noticed that ULPS was off by default with the first iteration of 9.12 Catalyst drivers, while the 9.12 Hotfix turned it on again. I'll be sure and flick this switch to turn it off when I get home from work...