To clarify: the gentoo virtualbox guest is broken by installing Mesa-10.1.1 on the *guest* machine. The gentoo host machine (also ~amd64) is already running Mesa-10.1.1 with no problems. When I run startx on the guest machine, gnome-shell complains about no support for 3D rendering and the screen goes black, although the X session continues to run with the black screen until I kill xinit manually. Reverting to Mesa-10.1.0 on the *guest* machine fixes the problem. (The host machine continues to run normally with Mesa-10.1.1, as before.) Xorg.0.log provides no error messages, so I'm stumped. I tried re-emerging xf86-video-virtualbox and virtualbox-guest-additions on the guest machine, but no joy. Anyone else having the same problem? Reproducible: Always
(In reply to walt from comment #0) > Xorg.0.log provides no error messages, so I'm stumped. [...] > Anyone else having the same problem? This is a bug tracker, not a support forum. Try our forums, IRC channels or mailing lists for support. When you end up finding an actual bug, please do report it.
Thanks Jeroen, as always, for supporting gentoo.
