[Bug 96645] [regression 4.7] [BISECT]Low package c-states used only after forcing DPMS to off

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=96645

Ville Syrjala <ville.syrjala at linux.intel.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |NEEDINFO

--- Comment #14 from Ville Syrjala <ville.syrjala at linux.intel.com> ---
There does seem to be some bug in the wm code. My IVB apparently manages to
come up with LP1 disabled and LP2+ enabled, which is pretty much nonsense. DPMS
toggling fixes that misconfiguration.

Please run intel_watermark from intel-gpu-tools before and after the DPMS trick
so that we can confirm whether it's a similar story with your HSW.

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