I want to report that I got the same bug under Ubuntu 16.04 with hardware enablement stack. The bug came with a recent update of the linux-generic-hwe, I now have 4.8.0.48.20 and I am affected. I also have an XPS 9550 with the 512GB Samsung NVMe. Was the APST support backported to 4.8?
For the moment my workaround is using the old 4.4 kernel, but I will try the kernel parameters as well... Info about my drive: $ sudo nvme list Node SN Model Version Namespace Usage Format FW Rev ---------------- -------------------- ---------------------------------------- -------- --------- -------------------------- ---------------- -------- /dev/nvme0n1 S29PNXAGC05771 PM951 NVMe SAMSUNG 512GB 1.1 1 450,10 GB / 512,11 GB 512 B + 0 B BXV77D0Q -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1678184 Title: APST quirk needed for Samsung 512GB NVMe drive To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1678184/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
