<html> <head> <base href="https://bugs.freedesktop.org/"> </head> <body> <div> <a class="bz_bug_link bz_status_NEW " title="NEW - ZaphodHeads + TearFree cause what looks like severe double buffering synchronization problems" href="https://bugs.freedesktop.org/show_bug.cgi?id=104343#c2">Comment # 2</a> on <a class="bz_bug_link bz_status_NEW " title="NEW - ZaphodHeads + TearFree cause what looks like severe double buffering synchronization problems" href="https://bugs.freedesktop.org/show_bug.cgi?id=104343">bug 104343</a> from <a class="email" href="mailto:werner@almesberger.net" title="Werner Almesberger <werner@almesberger.net>"> Werner Almesberger</a> <pre>I compiled the driver from git, with ./autogen.sh --enable-debug=full --prefix=/usr make make install The X server picks it up, but fails initialization with to_sna:499 assertion 'sna->scrn == scrn' failed Full log: <a href="https://almesberger.net/paste/Xorg.0.log-Fae9oiPh.txt">https://almesberger.net/paste/Xorg.0.log-Fae9oiPh.txt</a> Sadly, when trying to return to the configuration that worked before, I now still get the problems I had initially. So this means that, either 1) that appearance of the problem is affected by other variables (and may not have anything to do with TearFree) 2) make uninstall (of xserver-xorg-video-intel) left something behind, 3) apt-get removing and then re-installing the xserver-xorg-video-intel package caused some change 3) I introduced a change when editing xorg.conf back and forth for testing the driver compiled from git Regarding 3), I checked in the log that TearFree is always disable. Regarding 1), I tried to repeat the sequence of configurations that led to the successful run, in particular the configuration that disabled TearFree only in one case, followed by the correct one, but that didn't help.</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the QA Contact for the bug.</li> </ul> </body> </html>