Tried to experiment with earlier versions of mesa, and downgrading libgl1-mesa-dri and libgl1-mesa-glx to 7.0.2-4ubuntu2 solved the problems, while they are present with the 7.0.3~rc2 versions. Meanwhile I have found the easiest way to check if the problem is present is to open Screensaver Preferences, choose the screensaver 'Skyrocket', and if parts of the terrain disappear and/or bacame a triangle pointing towards the centre of the picture (see attached screenshot), the rendering problems are present.
On a sidenote, with 7.0.3~rc2-1ubuntu2 the z-buffer problems with the 'Endgame' screensaver (bug #162206) are again present. ** Attachment added: "Screenshot-Screensaver Preferences-2.png" http://launchpadlibrarian.net/12728854/Screenshot-Screensaver%20Preferences-2.png ** Description changed: - Binary package hint: xserver-xorg-video-intel + Binary package hint: mesa, xserver-xorg-video-intel If I switch from orthographic to perspective view (Numpad 5) the grid in the 3D viewport looks really strange. -- [Hardy] Blender's 3D viewport grid looks strange https://bugs.launchpad.net/bugs/199823 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs