<html> <head> <base href="https://bugs.freedesktop.org/"> </head> <body> <div> <a class="bz_bug_link bz_status_REOPENED " title="REOPENED - [SNB][IVB][BAT] kms_cursor_legacy@basic-busy-flip-before-cursor-atomic fails in CI" href="https://bugs.freedesktop.org/show_bug.cgi?id=100215#c25">Comment # 25</a> on <a class="bz_bug_link bz_status_REOPENED " title="REOPENED - [SNB][IVB][BAT] kms_cursor_legacy@basic-busy-flip-before-cursor-atomic fails in CI" href="https://bugs.freedesktop.org/show_bug.cgi?id=100215">bug 100215</a> from <a class="email" href="mailto:bugs@mblankhorst.nl" title="Maarten Lankhorst <bugs@mblankhorst.nl>"> Maarten Lankhorst</a> <pre>The trace checked out, did some annotations on the timings to be sure.. As a hunch I tried to see if the vblank timings were sane, it seems kms_setmode.basic (vblank timings) is not part of fast feedback. Farm3-snb with fake monitor (difference is always the same): (kms_setmode:4749) CRITICAL: vblank interval differs from modeline! expected 16666,7us, measured 16633us +- 3,436us, difference 33,7us (9,8 sigma) Farm3-snb with real monitor (difference value differs from above, but still always the same): (kms_setmode:4826) CRITICAL: vblank interval differs from modeline! expected 16672,7us, measured 16630us +- 1,843us, difference 42,7us (23,1 sigma)</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> </ul> </body> </html>