<html> <head> <base href="https://bugs.freedesktop.org/" /> </head> <body> <div> <a class="bz_bug_link bz_status_NEW " title="NEW - xorg segfault when disabling and reenabling kwin compositing with dri2 gpu offloading" href="https://bugs.freedesktop.org/show_bug.cgi?id=84653#c5">Comment # 5</a> on <a class="bz_bug_link bz_status_NEW " title="NEW - xorg segfault when disabling and reenabling kwin compositing with dri2 gpu offloading" href="https://bugs.freedesktop.org/show_bug.cgi?id=84653">bug 84653</a> from <a class="email" href="mailto:chris@chris-wilson.co.uk" title="Chris Wilson <chris@chris-wilson.co.uk>"> Chris Wilson</a> <pre>Hmm, still haven't spotted why we end up with a GPU bo. I think it is because the CRTC is redirected to the slave pixmap, but that slave pixmap is never exported (and so its GPU bo is not pinned and gets removed). The crash should be fixed with commit e50e1bb3fd2fd20cce580841b20a3e47c7111ee9 Author: Chris Wilson <<a href="mailto:chris@chris-wilson.co.uk">chris@chris-wilson.co.uk</a>> Date: Sun Oct 5 08:12:52 2014 +0100 sna: Only use copy redisplay fast path if we have a source GPU bo Odd as it may seem, but we can end up attempting to copy from a source CRTC pixmap that is not on the GPU. Here we need to use the heavyweight path to handle its composition normally. Reported-by: Christoph Haag <<a href="mailto:haagch@frickel.club">haagch@frickel.club</a>> Bugzilla: <a class="bz_bug_link bz_status_NEW " title="NEW - xorg segfault when disabling and reenabling kwin compositing with dri2 gpu offloading" href="show_bug.cgi?id=84653">https://bugs.freedesktop.org/show_bug.cgi?id=84653</a> Signed-off-by: Chris Wilson <<a href="mailto:chris@chris-wilson.co.uk">chris@chris-wilson.co.uk</a>> but I still wonder if there is another bug at play here.</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the QA Contact for the bug.</li> </ul> </body> </html>