There's still a bug in i965_dri.so. Basically it needs to be compiled with an older gcc to avoid miscompilation.
I read this off some mailing lists for people seeing "i915_dispatch_cmdbuffer failed" in the kernel logs. ** Changed in: mesa (Ubuntu) Status: Fix Released => Confirmed -- Support for Intel 965 (GMA X3000) doesn't work https://launchpad.net/bugs/62135 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs