OK, T420, 64 bit, Precise 12.04, the only option that helped to battle those booting freezes is "nox2apic" in the /etc/default/grub
Finally the discrete Nvidia chip graphics works with and without docking station, as well as booting to different primary monitors.
OK, T420, 64 bit, Precise 12.04, the only option that helped to battle those booting freezes is "nox2apic" in the /etc/default/grub
Finally the discrete Nvidia chip graphics works with and without docking station, as well as booting to different primary monitors.