Currently, x86-fbsd keyword is dropped from everything newer than xf86-video-intel-2.9.1 because that was the last version to not require KMS. It is my understanding that since FreeBSD 9.0, Intel KMS is supported. If that is correct, please keyword x11-drivers/xf86-video-intel-2.20.6 (or later). It may be necessary to mask the glamor flag in the profile.
Could anyone test the newest driver on intel machine with G/FreeBSD-9.1?
*** This bug has been marked as a duplicate of bug 314827 ***