<html> <head> <base href="https://bugs.freedesktop.org/"> </head> <body> <div> <a class="bz_bug_link bz_status_NEW " title="NEW - [BYT] constant screen flicker and rendering errors [regression]" href="https://bugs.freedesktop.org/show_bug.cgi?id=98036#c8">Comment # 8</a> on <a class="bz_bug_link bz_status_NEW " title="NEW - [BYT] constant screen flicker and rendering errors [regression]" href="https://bugs.freedesktop.org/show_bug.cgi?id=98036">bug 98036</a> from <a class="email" href="mailto:chris@chris-wilson.co.uk" title="Chris Wilson <chris@chris-wilson.co.uk>"> Chris Wilson</a> <pre>There are (principally) two causes of flickering, either the kernel misprogrammed the mode config (e.g. watermarks) or the frame is being shown before it is ready. The former is less widely reported for byt/vga, but there is definitely a known bug in mesa/DRI3 that causes mesa to render into a buffer that is still on the scanout. However, flicker *after* synmark exits suggests that is a modesetting (kernel) issue - unless there happens to be a GL compositor involved.</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>