Steve, I've found that the PCIe common clock may be the culprit here. Please try the kernel [1] with kernel parameter nvme_core.force_apst=1.
[1] https://people.canonical.com/~khfeng/quirk-no-commclk/ -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1705748 Title: Samsung SSD 960 EVO 500GB refused to change power state To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1705748/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
