On 01/25/2012 11:34 PM, CC wrote: > On Wed, Jan 25, 2012 at 1:28 PM, CC <ccomren at gmail.com> wrote: >> On Wed, Jan 25, 2012 at 12:47 PM, Graeme Russ <graeme.russ at gmail.com> wrote: >>> 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) >> >> Of course, the Z68 Pro3-M also has an UEFI BIOS. I can select "auto", >> "offset mode" and "fixed mode" for all voltages. Selecting "fixed >> mode" lets you set the GPU voltage in absolute terms, i.e., 1.25V. >> >> Best, CC > > I had a look at the manual of the Z68 Pro3 Gen3. While the UEFI setup > seems to be virtually identical, the description for the iGPU voltage > only mentions voltage offset. How about setting the offset to 0V? > Presumably, the offset is about 1.25V anyway. No luck :( And nothing in /sys/kernel/debug/dri/0/i915_error_state Is there any way to log the voltage in Linux? Regards, Graeme
