I've just booted into the 5.4.5 upstream kernel from https://kernel.ubuntu.com/~kernel-ppa/mainline/v5.4.5/ and I'm seeing that the NVMe drive _is_ detected correctly:
$ ls /dev/nvme* /dev/nvme0 /dev/nvme0n1 /dev/nvme0n1p1 /dev/nvme0n1p2 /dev/nvme0n1p3 /dev/nvme0n1p4 The journal messages do look very similar, so maybe there isn't much to be gleaned from them in the failing case: $ journalctl -b0 | grep nvme Dec 20 12:12:13 surprise kernel: nvme nvme0: pci function 0000:01:00.0 Dec 20 12:12:13 surprise kernel: nvme nvme0: missing or invalid SUBNQN field. Dec 20 12:12:13 surprise kernel: nvme nvme0: allocated 64 MiB host memory buffer. Dec 20 12:12:13 surprise kernel: nvme nvme0: 15/0/0 default/read/poll queues Dec 20 12:12:13 surprise kernel: nvme nvme0: Identify Descriptors failed (2) Dec 20 12:12:13 surprise kernel: nvme nvme0: Identify Descriptors failed (2) Dec 20 12:12:13 surprise kernel: nvme0n1: p1 p2 p3 p4 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1857152 Title: NVMe drive not properly detected (using 5.4.0-9-generic) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1857152/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
