I was running 12.04 with the KDE 4.92 backports just fine. I decided to
test out the latest Mesa using oibaf graphic drivers PPA which usually
contains Mesa from master (9.1). After installing this I got the issue
in this bug report. However, at the time I chalked it up to issues in
the latest
The MSAA bug has been fixed in kwin:
https://projects.kde.org/projects/kde/kde-workspace/repository/revisions/6cf05555a5d0c834de3a0165a62916cf3b40
I just tested this patch directly by downloading the
scene_opengl_glx.cpp, replaced the existing one in kde-workspace-4.9.2
deb source and
