Fedora 16, kernel 3.2.0+, i5 2500K, Z68 system freeze

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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


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