Comment # 111
on bug 81644
from Alex Deucher
(In reply to comment #110) > I found this post, stating some of the ASUS hardware comes PRE-OVERCLOCKED > from the factory. Good chance this is the cause of my instability? > > http://www.tomshardware.com/answers/id-2041324/problem-asus-270x-screen- > blank-game.html > > My GPU: > > http://www.newegg.com/Product/Product.aspx?Item=N82E16814121802&nm_mc=KNC- > GoogleAdwords&cm_mmc=KNC-GoogleAdwords-_-pla-_-Desktop+Graphics+Cards-_- > N82E16814121802&gclid=COjjs6v3_MACFRAR7Aod_2EAqQ > > Core clock is listed at 1120 Mhz, not 1050 Mhz. Radeon already limits the clocks in certain cases depending on the vbios tables. You can disable dpm which will keep the chip at the default boot up levels (usually some where in the range of 300e/150m) for testing. Append radeon.dpm=0 to the kernel command line in grub.
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