<html> <head> <base href="https://bugs.freedesktop.org/" /> </head> <body> <div> <a class="bz_bug_link bz_status_NEW " title="NEW - [ilk] IPS frequently downclocks the GPU when playing quakelive" href="https://bugs.freedesktop.org/show_bug.cgi?id=90137#c4">Comment # 4</a> on <a class="bz_bug_link bz_status_NEW " title="NEW - [ilk] IPS frequently downclocks the GPU when playing quakelive" href="https://bugs.freedesktop.org/show_bug.cgi?id=90137">bug 90137</a> from <a class="email" href="mailto:dimon@gmx.net" title="dimon@gmx.net">dimon@gmx.net</a> <pre>Hi Chris, I've did some tests with your current <a class="bz_bug_link bz_status_NEW " title="NEW - [ilk] IPS frequently downclocks the GPU when playing quakelive" href="show_bug.cgi?id=90137">bug90137</a> branch. Last commit: 3529bfdeb1891efe9f87145f64316ae1b66cbd3b Unfortunately the GPU doesn' reclock at all, it stays always in the slowest P-state. I monitored it trough /sys/kernel/debug/dri/0/i915_frequency_info On 3.19.5 the GPU reclocks - but in a 'strange' way. Furthermore, ips seems not to work properly on my machine. > cat /sys/kernel/debug/dri/0/i915_emon_status GMCH temp: 53 Chipset power: 2916 GFX power: 21803 Total power: 24719 This is on an idling machine. The value of GFX power seems to be wrong, it's a way to high for an idling machine. Ips gets this value from the i915 driver and bases its decisions on it - reclocking can't work properly without correct power values. The power calculation is done in __i915_gfx_val - it does some magic based on empirical values. Is there any corresponding documentation available? So I could look whats actually going wrong on my machine.</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the QA Contact for the bug.</li> <li>You are on the CC list for the bug.</li> <li>You are the assignee for the bug.</li> </ul> </body> </html>