I removed the nvidia drivers coming with the distro, and installed the latest 64bit drivers from the Nvidia website (270.41.06) just in case. Problem still persists.
I then removed those drivers, and installed the nouveau driver via apt. Problem still persists. Sumary: This problem does not seem to be directly related to the GPU drivers. -- 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
