<html> <head> <base href="https://bugs.freedesktop.org/"> </head> <body> <div> <a class="bz_bug_link bz_status_NEW " title="NEW - i915 time out with recent kernels: [drm_kms_helper] flip_done timed out" href="https://bugs.freedesktop.org/show_bug.cgi?id=106422#c1">Comment # 1</a> on <a class="bz_bug_link bz_status_NEW " title="NEW - i915 time out with recent kernels: [drm_kms_helper] flip_done timed out" href="https://bugs.freedesktop.org/show_bug.cgi?id=106422">bug 106422</a> from <a class="email" href="mailto:alainb06@free.fr" title="Zakhar <alainb06@free.fr>"> Zakhar</a> <pre>More information. I have narrowed it down: 16.04.1 - kernel 4.4.0-31-generic ==> Works OK with messages ("encoder detached but still enabled on pipe A.") No visible slowdown apart for 3 or 4 stack traces in the log. 16.04.2 - kernel 4.8.0-36-generic ==> Shows the "time outs" bug So there must have been a change that is affecting i915 between kernels 4.4. and 4.8 Steps to reproduce: - live boot on 16.04.1 - see all is Ok apart from some messages in the log - live boot on 16.04.2 - see the boot takes much much more time and there are numerous timeouts messages.</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>