Using cairo 1.10.0 and pixmap 0.21.2, everything is displayed gracefully on 4.0b8 built against system cairo, on intel display. (iceweasel from http://mozilla.debian.net/packages/, and cairo and pixmap from current debian experimental, for those who care).
Using cairo 1.10.0 and pixmap 0.21.2, everything is displayed gracefully on 4.0b8 built against system cairo, on intel display. (iceweasel from http:// mozilla. debian. net/packages/, and cairo and pixmap from current debian experimental, for those who care).
Nouveau drivers are likely to be the culprit.