Re: [RFC PATCH v2 0/7] stabilize kepler reclocking

[Thomas Martitz <kugel-UCKwuKHb1aVAfugRpC6u6w@public.gmane.org>]

Am 31.12.2015 um 10:56 schrieb Thomas Martitz:
> Am 31. Dezember 2015 03:54:43 MEZ, schrieb Karol Herbst <nouveau@karolherbst.de>:
>>> Thomas Martitz <kugel@rockbox.org> hat am 30. Dezember 2015 um 23:53
>>> geschrieben:
>>>
>>> Am 25.12.2015 um 18:43 schrieb Pierre Moreau:
>>>> Hello,
>>>>
>>>> Maybe my e-mail client is messing with me, but I couldn't find any
>> dmesg
>>>> output
>>>> attached to your e-mail. Could you please try to attach it again?
>>>>
>>>> By the way, since you have a Kepler, you should try booting with
>>>> "nouveau.War00C800_0=1". That workaround is enabled by default in
>> 4.4-rc5
>>>> (IIRC), but that might not be the case on Karol's branch.
>>>>
>>>> Best regards,
>>>> Pierre
>>>>
>>> I did not find that parameter under /sys/module/nouveau/parameters.
>>> Google led me to try nouveau.config=War00C800_0=1 instead.
>>>
>>> Anyway, I added both to the kernel cmdline. Unfortunately it made no
>>> difference. Dota 2 still freezes up the system pretty much
>> immediately
>>> (when 0f pstate is in use).
>> well so that means that it doesn't freeze when not using 0f?
>>
> That's right.
>
>
>> I suspect that nouveau currently just sets the voltage too low, but
>> this is
>> another issue
>> and this issue will be tackled next year.
>>
>> You could replace info.min with info.max in
>> drm/nouveau/nvkm/subdev/volt/base.c:nvkm_volt_map
>> but this will result in more heat generated by your gpu and nouveau
>> currently
>> does not verifies if the
>> ovearheating protection is setup sanely (though it should be setup
>> already by
>> the gpu itself)
>>
> What's your recommendation to determine suitable values? I could try the binary driver under Linux or win10. Under win10 I know some tools (e.g. msi afterburner). Note that I know next to nothing about the Kepler architecture itself, just the basic voltage-frequency-temperature interactions.

Just a follow up. Your suggestion worked fine for me. Should this change 
be merged?

Best regards.
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