The problem has been fixed. It is the conflict between TLP and bumblebee that causes the problem. Although I had included PCI "01:00.00" in tlp's pci blacklist, tlp still holds the control of nvidia graphic card's power management.
After I add "pcie_port_pm=off" in kernel options the problem suddenly disappeared. Plz set this bug thread as invalid since this is a problem between tlp and the linux kernel. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1705015 Title: bumblebee does not work with XPS 9560 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/bumblebee/+bug/1705015/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
