On Wed, Jan 25, 2012 at 3:08 PM, Graeme Russ <graeme.russ at gmail.com> wrote: > 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 lm_sensors lets you monitor voltages and temperatures. Unfortunately, sensors-detect didn't detect all sensors for me, but maybe you are luckier.
