[Bug 100443] DMESG: [powerplay] Can't find requested voltage id in vdd_dep_on_sclk table!

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=100443

--- Comment #35 from Devin Prince <semperverus at gmail.com> ---
Upon further investigation, I would like to ammend my previous comment.

Setting amdgpu.dpm=0 will allow you to bypass those errors by disabling dpm
altogether, but the consequence is that the fans will stop spinning almost
entirely (slow or no fan speeds when they should be ramping up).

Instead, set:

    amdgpu.ppfeaturemask=1

which enables the card to broadcast all of its power states properly. With this
enabled, all the errors mentioned in this thread vanished from my system, and
in addition, the hwmon features actually showed up under
/sys/class/drm/card0/device/hwmon/hwmon0/ and I can even echo speeds to pwm1.

I'm unsure if this has any adverse effects on anything, but if it does not,
perhaps ppfeaturemask should be set to default enabled in the amdgpu driver.

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