On 01/25/2012 10:31 PM, Chris Wilson wrote: > On Wed, 25 Jan 2012 12:29:05 +1100, Graeme Russ <graeme.russ at gmail.com> wrote: >> Hi All, >> >> I've been hunting around for information on how to help debug the issue >> I'm having - Hopefully someone here can help >> >> My setup is: >> - ASRock Z68 Pro3 Gen3 motherboard >> - i5 2500K CPU >> - Fedora 16 >> - Vanilla 3.2.0+ kernel (commt ccb19d263fd1c9e34948e2158c53eacbff369344) > > We've had a second report for ASRock Z68 Pro3, > https://bugs.freedesktop.org/show_bug.cgi?id=44992. There he mentions that > setting the iGPU voltage to fixed (1.25V) rather than auto in the BIOS > fixes the system hangs. The MB is a ASRock Z68 Pro3-M, mine is a ASRock Z68 Pro3 Gen3 Also see https://bugzilla.kernel.org/show_bug.cgi?id=42597 <quote> I've recently had a problem with an AsRock mainboard. As it turned out, their voltage control of the integrated GPU was buggy. Setting the voltage to "fixed 1.5V" instead of "auto" resolved the issue. </quote> I think this is the same person I don't know about the ASRock Z68 Pro3-M, but the Gen3 has a EUFI BIOS and I cannot find an explicit GPU voltage setting. My options are: CPU Core Voltage Offset -100mV - +500mV IGPU Voltage Offset -100mV - +500mV DRAM Voltage 1.201V - 1.8V PCH Voltage 0.780V - 1.646V CPU PLL Voltage 1.548V - 2.310V VTT Voltage 0.768V - 1.634V VCCSA Voltage 0.925V - 1.200V I have already update to the latest BIOS (1.20) Regards, Graeme
