<html> <head> <base href="https://bugs.freedesktop.org/"> </head> <body> <div> <a class="bz_bug_link bz_status_NEW " title="NEW - screen corruption using SNA and TearFree on Intel GeminiLake" href="https://bugs.freedesktop.org/show_bug.cgi?id=105720#c19">Comment # 19</a> on <a class="bz_bug_link bz_status_NEW " title="NEW - screen corruption using SNA and TearFree on Intel GeminiLake" href="https://bugs.freedesktop.org/show_bug.cgi?id=105720">bug 105720</a> from <a class="email" href="mailto:martin.peres@free.fr" title="Martin Peres <martin.peres@free.fr>"> Martin Peres</a> <pre>Created <a href="attachment.cgi?id=138397" name="attach_138397" title="Diff needed to fix the issue, to be applied on top of 6c1e70ca4234a5ab23fcdb3735fc55ac7939c52c (current HEAD)">attachment 138397</a> <a href="attachment.cgi?id=138397&action=edit" title="Diff needed to fix the issue, to be applied on top of 6c1e70ca4234a5ab23fcdb3735fc55ac7939c52c (current HEAD)">[details]</a> <a href='page.cgi?id=splinter.html&bug=105720&attachment=138397'>[review]</a> Diff needed to fix the issue, to be applied on top of 6c1e70ca4234a5ab23fcdb3735fc55ac7939c52c (current HEAD) So, the root window is getting corrupted even when using tripple buffering, which means the root window would never re-use buffers created by SNA. To rule out anything related to the HW, we tried using as much fallback code as possible using Option "AccelMethod" "none" (Chris' suggestion). Instead of fixing the problem, it made it extremely easy to reproduce. Chris asked for a full debug log (--enable-debug=full), which I could not get because SNA would hit an assert. Once commented out, I could produce a trace for Chris to read. He found an issue using the trace and wrote a one-liner that seem to fix the problem. The only problem is that Chris does not understand why this fixes the issue at hand... I am still posting the information now, for other parties to try to reproduce.</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the QA Contact for the bug.</li> </ul> </body> </html>