Due to an apparent bug in the x2APIC of this Sandy Bridge laptop, you must set the following in /boot/loader.conf:
hw.x2apic_enable="0"
Once this is done, boot, suspend and resume all seem to work.
This laptop's Intel (Sandy Bridge) graphics work with KMS, vt(4) and desktop window manager compositing. To enable fancy graphics right from boot, set the following in /boot/loader.conf:
i915kms_load="YES" kern.vty="vt"