<html> <head> <base href="https://bugs.freedesktop.org/" /> </head> <body> <div> <a class="bz_bug_link bz_status_NEW " title="NEW --- - [ivb/hsw] batch overwritten with garbage" href="https://bugs.freedesktop.org/show_bug.cgi?id=77207#c19">Comment # 19</a> on <a class="bz_bug_link bz_status_NEW " title="NEW --- - [ivb/hsw] batch overwritten with garbage" href="https://bugs.freedesktop.org/show_bug.cgi?id=77207">bug 77207</a> from <a class="email" href="mailto:kenneth@whitecape.org" title="Kenneth Graunke <kenneth@whitecape.org>"> Kenneth Graunke</a> <pre>Eric posted a Mesa patch which fixes the corruption/hangs: <a href="http://lists.freedesktop.org/archives/mesa-dev/2014-April/057818.html">http://lists.freedesktop.org/archives/mesa-dev/2014-April/057818.html</a> Apparently, it was indeed a problem with our multisample control buffer handling. With that patch, window system multisampling works reliably (at least for me.) Thank you all for the excellent data, and sorry for the trouble! That said, KWin really should not be using 8x multisampling - it adds a lot of unnecessary overhead. I'd still strongly recommend upgrading to X server 1.15.1 or 1.14.6, which fix the GLX bug which caused KWin to do this. Or, you can continue working around that bug by using KWIN_OPENGL_INTERFACE=egl. Any of the above should fix this issue.</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the QA Contact for the bug.</li> </ul> </body> </html>