Could you reproduce this bug with latest mainline kernel v5.9.1? https://kernel.ubuntu.com/~kernel-ppa/mainline/?C=N;O=D https://wiki.ubuntu.com/Kernel/MainlineBuilds
** Tags added: needs-upstream-testing -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1899314 Title: Hang after load of initramfs Status in linux package in Ubuntu: Confirmed Bug description: When trying to boot either of the 2 kernel versions above, the computer displays the "Kubuntu" logo for a minute or so, then goes to a text "(initramfs)" prompt. It appears to be unable to see my SSD correctly (despite grub just loading from it!), as "ls /dev" shows only "nvme0", not "nvme0n1". The last working kernel version for me is 5.4.0-42. I have already seen others that report this same bug, but with different m2 nvme. The fix from 5.4.0-48 did not work for this instance. dmesg | grep nvme [ 2.673278] nvme nvme0: pci function 0000:01:00.0 [ 2.673371] nvme nvme1: pci function 0000:04:00.0 [ 2.673675] nvme nvme2: pci function 0000:05:00.0 [ 2.886868] nvme nvme0: missing or invalid SUBNQN field. [ 2.886890] nvme nvme0: Shutdown timeout set to 10 seconds [ 2.886892] nvme nvme1: missing or invalid SUBNQN field. [ 2.886895] nvme nvme2: missing or invalid SUBNQN field. [ 2.886909] nvme nvme1: Shutdown timeout set to 10 seconds [ 2.886933] nvme nvme2: Shutdown timeout set to 10 seconds [ 2.887986] nvme nvme0: 8/0/0 default/read/poll queues [ 2.888053] nvme nvme1: 8/0/0 default/read/poll queues [ 2.888132] nvme nvme2: 8/0/0 default/read/poll queues [ 2.889201] nvme0n1: p1 [ 2.889453] nvme1n1: p1 p2 < p5 p6 > [ 17.669285] EXT4-fs (nvme1n1p5): mounted filesystem with ordered data mode. Opts: (null) lspci 00:00.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Starship/Matisse Root Complex 00:00.2 IOMMU: Advanced Micro Devices, Inc. [AMD] Starship/Matisse IOMMU 00:01.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Starship/Matisse PCIe Dummy Host Bridge 00:01.1 PCI bridge: Advanced Micro Devices, Inc. [AMD] Starship/Matisse GPP Bridge 00:01.2 PCI bridge: Advanced Micro Devices, Inc. [AMD] Starship/Matisse GPP Bridge 00:02.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Starship/Matisse PCIe Dummy Host Bridge 00:03.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Starship/Matisse PCIe Dummy Host Bridge 00:03.1 PCI bridge: Advanced Micro Devices, Inc. [AMD] Starship/Matisse GPP Bridge 00:04.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Starship/Matisse PCIe Dummy Host Bridge 00:05.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Starship/Matisse PCIe Dummy Host Bridge 00:07.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Starship/Matisse PCIe Dummy Host Bridge 00:07.1 PCI bridge: Advanced Micro Devices, Inc. [AMD] Starship/Matisse Internal PCIe GPP Bridge 0 to bus[E:B] 00:08.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Starship/Matisse PCIe Dummy Host Bridge 00:08.1 PCI bridge: Advanced Micro Devices, Inc. [AMD] Starship/Matisse Internal PCIe GPP Bridge 0 to bus[E:B] 00:08.2 PCI bridge: Advanced Micro Devices, Inc. [AMD] Starship/Matisse Internal PCIe GPP Bridge 0 to bus[E:B] 00:08.3 PCI bridge: Advanced Micro Devices, Inc. [AMD] Starship/Matisse Internal PCIe GPP Bridge 0 to bus[E:B] 00:14.0 SMBus: Advanced Micro Devices, Inc. [AMD] FCH SMBus Controller (rev 61) 00:14.3 ISA bridge: Advanced Micro Devices, Inc. [AMD] FCH LPC Bridge (rev 51) 00:18.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Matisse Device 24: Function 0 00:18.1 Host bridge: Advanced Micro Devices, Inc. [AMD] Matisse Device 24: Function 1 00:18.2 Host bridge: Advanced Micro Devices, Inc. [AMD] Matisse Device 24: Function 2 00:18.3 Host bridge: Advanced Micro Devices, Inc. [AMD] Matisse Device 24: Function 3 00:18.4 Host bridge: Advanced Micro Devices, Inc. [AMD] Matisse Device 24: Function 4 00:18.5 Host bridge: Advanced Micro Devices, Inc. [AMD] Matisse Device 24: Function 5 00:18.6 Host bridge: Advanced Micro Devices, Inc. [AMD] Matisse Device 24: Function 6 00:18.7 Host bridge: Advanced Micro Devices, Inc. [AMD] Matisse Device 24: Function 7 01:00.0 Non-Volatile memory controller: Phison Electronics Corporation E16 PCIe4 NVMe Controller (rev 01) 02:00.0 PCI bridge: Advanced Micro Devices, Inc. [AMD] Matisse Switch Upstream 03:00.0 PCI bridge: Advanced Micro Devices, Inc. [AMD] Matisse PCIe GPP Bridge 03:01.0 PCI bridge: Advanced Micro Devices, Inc. [AMD] Matisse PCIe GPP Bridge 03:03.0 PCI bridge: Advanced Micro Devices, Inc. [AMD] Matisse PCIe GPP Bridge 03:04.0 PCI bridge: Advanced Micro Devices, Inc. [AMD] Matisse PCIe GPP Bridge 03:05.0 PCI bridge: Advanced Micro Devices, Inc. [AMD] Matisse PCIe GPP Bridge 03:08.0 PCI bridge: Advanced Micro Devices, Inc. [AMD] Matisse PCIe GPP Bridge 03:09.0 PCI bridge: Advanced Micro Devices, Inc. [AMD] Matisse PCIe GPP Bridge 03:0a.0 PCI bridge: Advanced Micro Devices, Inc. [AMD] Matisse PCIe GPP Bridge 04:00.0 Non-Volatile memory controller: Phison Electronics Corporation E16 PCIe4 NVMe Controller (rev 01) 05:00.0 Non-Volatile memory controller: Phison Electronics Corporation E16 PCIe4 NVMe Controller (rev 01) 06:00.0 Network controller: Intel Corporation Wi-Fi 6 AX200 (rev 1a) 07:00.0 Ethernet controller: Intel Corporation I211 Gigabit Network Connection (rev 03) 08:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8125 2.5GbE Controller (rev 01) 09:00.0 Non-Essential Instrumentation [1300]: Advanced Micro Devices, Inc. [AMD] Starship/Matisse Reserved SPP 09:00.1 USB controller: Advanced Micro Devices, Inc. [AMD] Matisse USB 3.0 Host Controller 09:00.3 USB controller: Advanced Micro Devices, Inc. [AMD] Matisse USB 3.0 Host Controller 0a:00.0 SATA controller: Advanced Micro Devices, Inc. [AMD] FCH SATA Controller [AHCI mode] (rev 51) 0b:00.0 SATA controller: Advanced Micro Devices, Inc. [AMD] FCH SATA Controller [AHCI mode] (rev 51) 0c:00.0 VGA compatible controller: NVIDIA Corporation TU116 [GeForce GTX 1660] (rev a1) 0c:00.1 Audio device: NVIDIA Corporation TU116 High Definition Audio Controller (rev a1) 0c:00.2 USB controller: NVIDIA Corporation TU116 USB 3.1 Host Controller (rev a1) 0c:00.3 Serial bus controller [0c80]: NVIDIA Corporation TU116 USB Type-C UCSI Controller (rev a1) 0d:00.0 Non-Essential Instrumentation [1300]: Advanced Micro Devices, Inc. [AMD] Starship/Matisse PCIe Dummy Function 0e:00.0 Non-Essential Instrumentation [1300]: Advanced Micro Devices, Inc. [AMD] Starship/Matisse Reserved SPP 0e:00.1 Encryption controller: Advanced Micro Devices, Inc. [AMD] Starship/Matisse Cryptographic Coprocessor PSPCPP 0e:00.3 USB controller: Advanced Micro Devices, Inc. [AMD] Matisse USB 3.0 Host Controller 0e:00.4 Audio device: Advanced Micro Devices, Inc. [AMD] Starship/Matisse HD Audio Controller 0f:00.0 SATA controller: Advanced Micro Devices, Inc. [AMD] FCH SATA Controller [AHCI mode] (rev 51) 10:00.0 SATA controller: Advanced Micro Devices, Inc. [AMD] FCH SATA Controller [AHCI mode] (rev 51) cat /proc/version_signature Ubuntu 5.4.0-42.46-generic 5.4.44 --- ProblemType: Bug ApportVersion: 2.20.11-0ubuntu27.9 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: kroybal 2075 F.... pulseaudio /dev/snd/controlC5: kroybal 2075 F.... pulseaudio /dev/snd/controlC3: kroybal 2075 F.... pulseaudio /dev/snd/controlC1: kroybal 2075 F.... pulseaudio CasperMD5CheckResult: skip CurrentDesktop: KDE DistroRelease: Ubuntu 20.04 InstallationDate: Installed on 2020-05-24 (139 days ago) InstallationMedia: Kubuntu 20.04 LTS "Focal Fossa" - Release amd64 (20200423) MachineType: Gigabyte Technology Co., Ltd. X570 AORUS MASTER NonfreeKernelModules: nvidia_modeset nvidia Package: linux (not installed) ProcFB: 0 VESA VGA ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-5.4.0-42-generic root=/dev/mapper/vgkubuntu-root ro splash vt.handoff=7 ProcVersionSignature: Ubuntu 5.4.0-42.46-generic 5.4.44 RelatedPackageVersions: linux-restricted-modules-5.4.0-42-generic N/A linux-backports-modules-5.4.0-42-generic N/A linux-firmware 1.187.3 Tags: focal Uname: Linux 5.4.0-42-generic x86_64 UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: adm cdrom dip lpadmin lxd plugdev sambashare sudo _MarkForUpload: True dmi.bios.date: 12/06/2019 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: F11 dmi.board.asset.tag: Default string dmi.board.name: X570 AORUS MASTER dmi.board.vendor: Gigabyte Technology Co., Ltd. dmi.board.version: x.x dmi.chassis.asset.tag: Default string dmi.chassis.type: 3 dmi.chassis.vendor: Default string dmi.chassis.version: Default string dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrF11:bd12/06/2019:svnGigabyteTechnologyCo.,Ltd.:pnX570AORUSMASTER:pvr-CF:rvnGigabyteTechnologyCo.,Ltd.:rnX570AORUSMASTER:rvrx.x:cvnDefaultstring:ct3:cvrDefaultstring: dmi.product.family: Default string dmi.product.name: X570 AORUS MASTER dmi.product.sku: Default string dmi.product.version: -CF dmi.sys.vendor: Gigabyte Technology Co., Ltd. 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