<html> <head> <base href="https://bugs.freedesktop.org/"> </head> <body> <div> <a class="bz_bug_link bz_status_ASSIGNED " title="ASSIGNED - [regression 4.7] [BISECT]Low package c-states used only after forcing DPMS to off" href="https://bugs.freedesktop.org/show_bug.cgi?id=96645#c11">Comment # 11</a> on <a class="bz_bug_link bz_status_ASSIGNED " title="ASSIGNED - [regression 4.7] [BISECT]Low package c-states used only after forcing DPMS to off" href="https://bugs.freedesktop.org/show_bug.cgi?id=96645">bug 96645</a> from <a class="email" href="mailto:gabriele.mzt@gmail.com" title="Gabriele Mazzotta <gabriele.mzt@gmail.com>"> Gabriele Mazzotta</a> <pre>(In reply to Dorota Czaplejewicz from <a href="show_bug.cgi?id=96645#c10">comment #10</a>) > I have tried to reproduce this on a HSW-4770R machine, but I'm not sure > whether I got matching reasults. > > Cputop shows available package states: C3, C6. System stays in C3 after SATA > link management enabled, never enters C6. Toggling DPMS has no effect. The > machine doesn't have a display connected. I don't know what cputop is, I use powertop to have an overview of the current state, so I don't know if you are referring to the core c-state or package c-states. I'm having issues with the package c-states. > Does it seem similar to the symptoms of this bug? What I reported is a regression. With v4.6 or older the CPU could enter pc7, now I have to toggle DPMS. If your CPU could enter some package c-states with v4.6 that can no longer enter with newer kernel, then yes, your system is affected by the same bug.</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are on the CC list for the bug.</li> <li>You are the QA Contact for the bug.</li> </ul> </body> </html>