Xfwm4 aborted because of assertion fails in intel_miptree_match_image(): xfwm4: ../mesa-19.1.1/src/mesa/drivers/dri/i965/intel_mipmap_tree.c:1293: intel_miptree_match_image: Assertion `image->TexObject->Target == mt->target' failed. Aborted It caused by revert the default vblank method (auto) to GLX: commit e07574d6e7a2dbaa08c3ba4765c6306073d9493e Author: Olivier Fourdan <fourdan@xfce.org> Date: Fri Apr 26 20:47:11 2019 +0200 compositor: Revert to GLX as default vblank method (again) Bug: 15325 Although XPresent would be the most sensible choice for a lightweight vblank method, it's still quite fragile and currently broken with modesettings driver on Xorg 1.20. GLX seems to work reasonably well on a wide range of hardware and driver (including closed source drivers) and does not suffer from the lock ups XPresent may cause on some kernel/driver. Revert the default vblank method (auto) to GLX for now. See-also: https://gitlab.freedesktop.org/xorg/xserver/issues/68 Signed-off-by: Olivier Fourdan <fourdan@xfce.org>
There is a similar RHEL defect. But it is reported before this commit merged. https://bugzilla.redhat.com/show_bug.cgi?id=1678334
This is a bug in mesa, in the intel driver, that shows when Mesa is built with asserts() enabled (typically debug). See: https://bugs.freedesktop.org/show_bug.cgi?id=107117 https://patchwork.freedesktop.org/patch/237490/ *** This bug has been marked as a duplicate of bug 15684 ***
See also bug 14475