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. ** Attachment added: "dmidecode.txt" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/776999/+attachment/3214276/+files/dmidecode.txt -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/776999 Title: [Lenovo W520] laptop freezes on ACPI-related actions To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/776999/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
