<html> <head> <base href="https://bugs.freedesktop.org/" /> </head> <body> <div> <a class="bz_bug_link bz_status_NEEDINFO " title="NEEDINFO - constant fps drops with Intel and Radeon" href="https://bugs.freedesktop.org/show_bug.cgi?id=87886#c29">Comment # 29</a> on <a class="bz_bug_link bz_status_NEEDINFO " title="NEEDINFO - constant fps drops with Intel and Radeon" href="https://bugs.freedesktop.org/show_bug.cgi?id=87886">bug 87886</a> from <a class="email" href="mailto:eero.t.tamminen@intel.com" title="Eero Tamminen <eero.t.tamminen@intel.com>"> Eero Tamminen</a> <pre>You need to do one more test. if you'll echo max freq value to /sys/kernel/debug/dri/0/i915_min_freq, kernel will not drop GPU frequency. If that gets rid of the issue, it's kernel PM issue. If the CAGF value still goes below max GPU frequency, you got issues outside of what Linux can control -> the CPU speed gets limited by HW / firmware, potentially because of temperature issues. Temperature you can track with lmsensors. If frequency gets limited when temperature reaches a certain limit, you need to make sure your CPU is better cooled. Updating BIOS may also help, I think newer BIOS versions try to keep fluctuations smaller (drop freq less, but earlier).</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the assignee for the bug.</li> </ul> </body> </html>