Disabling the Wireless card in the BIOS does not solve the problem for me. Even with disabled Wireless when the laptop freezes instantly when I change the brightness in the GUI.
-- 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 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs