Trouble getting a LUKS passphrase prompt on Fedora 40 (Kernel v6.9.4) during boot

Hello,

I am having issues with getting the LUKS passphrase prompt during boot. I get a blank screen with no prompt. I am looking for a solution that is not a workaround.

Here is what I am able to do:

  1. Boot into the older kernel 6.8.11 with no issues. The passphrase prompt is displayed without any issues.
  2. Boot into kernel 6.9.4 by removing the rhgb quiet option by editing the boot command from the GRUB menu. By doing this I am shown a passphrase prompt at the end after system prints out detailed boot info. I think I need to press ENTER before I’m shown the prompt but I’m not too sure.
  3. Unplug the display port cable from my dGPU and plug it into the iGPU on my motherboard. This displays the prompt.

I have the NVIDIA Proprietary Driver v550.90.07 installed from rpmfusion. But I doubt the driver is causing issues since I am able to boot into kernel v6.8.11 without having to make any edits to the boot command.

Here are the detailed system specs from inxi:

Full System Specs from inxi
System:
  Kernel: 6.9.4-200.fc40.x86_64 arch: x86_64 bits: 64 compiler: gcc
    v: 2.41-37.fc40 clocksource: tsc avail: hpet,acpi_pm
    parameters: BOOT_IMAGE=(hd2,gpt2)/vmlinuz-6.9.4-200.fc40.x86_64
    root=UUID=bcf2b727-c487-44b2-aece-50e1367b21b0 ro rootflags=subvol=root
    rd.driver.blacklist=nouveau modprobe.blacklist=nouveau
    rd.luks.uuid=luks-d8d7c612-e097-4ce3-8773-a4a77c6cb4ac
    nvidia-drm.modeset=1 rd.driver.blacklist=nouveau
    modprobe.blacklist=nouveau
  Desktop: GNOME v: 46.2 tk: GTK v: 3.24.42 wm: gnome-shell
    tools: gsd-screensaver-proxy dm: GDM v: 46.2 Distro: Fedora Linux 40
    (Workstation Edition)
Machine:
  Type: Desktop System: ASUS product: N/A v: N/A serial: <superuser required>
  Mobo: ASUSTeK model: TUF GAMING B650-PLUS WIFI v: Rev 1.xx
    serial: <superuser required> part-nu: SKU uuid: <superuser required>
    UEFI: American Megatrends v: 2413 date: 02/04/2024
CPU:
  Info: model: AMD Ryzen 7 7700X bits: 64 type: MT MCP arch: Zen 4 gen: 5
    level: v4 note: check built: 2022+ process: TSMC n5 (5nm) family: 0x19 (25)
    model-id: 0x61 (97) stepping: 2 microcode: 0xA601206
  Topology: cpus: 1x cores: 8 tpc: 2 threads: 16 smt: enabled cache:
    L1: 512 KiB desc: d-8x32 KiB; i-8x32 KiB L2: 8 MiB desc: 8x1024 KiB
    L3: 32 MiB desc: 1x32 MiB
  Speed (MHz): avg: 989 high: 3593 min/max: 400/5573 scaling:
    driver: amd-pstate-epp governor: powersave cores: 1: 400 2: 400 3: 3590
    4: 400 5: 400 6: 400 7: 400 8: 400 9: 400 10: 400 11: 400 12: 400 13: 3447
    14: 400 15: 3593 16: 400 bogomips: 143732
  Flags: avx avx2 ht lm nx pae sse sse2 sse3 sse4_1 sse4_2 sse4a ssse3 svm
  Vulnerabilities:
  Type: gather_data_sampling status: Not affected
  Type: itlb_multihit status: Not affected
  Type: l1tf status: Not affected
  Type: mds status: Not affected
  Type: meltdown status: Not affected
  Type: mmio_stale_data status: Not affected
  Type: reg_file_data_sampling status: Not affected
  Type: retbleed status: Not affected
  Type: spec_rstack_overflow mitigation: Safe RET
  Type: spec_store_bypass mitigation: Speculative Store Bypass disabled via
    prctl
  Type: spectre_v1 mitigation: usercopy/swapgs barriers and __user pointer
    sanitization
  Type: spectre_v2 mitigation: Enhanced / Automatic IBRS; IBPB: conditional;
    STIBP: always-on; RSB filling; PBRSB-eIBRS: Not affected; BHI: Not
    affected
  Type: srbds status: Not affected
  Type: tsx_async_abort status: Not affected
Graphics:
  Device-1: NVIDIA AD104 [GeForce RTX 4070 SUPER] vendor: ASUSTeK
    driver: nvidia v: 550.90.07 alternate: nouveau,nvidia_drm non-free: 550.xx+
    status: current (as of 2024-04) arch: Lovelace code: AD1xx
    process: TSMC n4 (5nm) built: 2022+ pcie: gen: 3 speed: 8 GT/s lanes: 16
    link-max: gen: 4 speed: 16 GT/s ports: active: none off: DP-3,HDMI-A-2
    empty: DP-2,DP-4 bus-ID: 01:00.0 chip-ID: 10de:2783 class-ID: 0300
  Device-2: AMD Raphael vendor: ASUSTeK driver: amdgpu v: kernel arch: RDNA-2
    code: Navi-2x process: TSMC n7 (7nm) built: 2020-22 pcie: gen: 4
    speed: 16 GT/s lanes: 16 ports: active: none
    empty: DP-1,HDMI-A-1,Writeback-1 bus-ID: 0d:00.0 chip-ID: 1002:164e
    class-ID: 0300 temp: 34.0 C
  Device-3: Logitech C920 HD Pro Webcam driver: snd-usb-audio,uvcvideo
    type: USB rev: 2.0 speed: 480 Mb/s lanes: 1 mode: 2.0 bus-ID: 1-7:4
    chip-ID: 046d:0892 class-ID: 0102 serial: <filter>
  Display: x11 server: X.Org v: 1.20.14 with: Xwayland v: 24.1.0
    compositor: gnome-shell driver: X: loaded: amdgpu,nvidia
    unloaded: fbdev,modesetting,vesa alternate: nouveau,nv dri: radeonsi
    gpu: nvidia,nvidia-nvswitch display-ID: :1 screens: 1
  Screen-1: 0 s-res: 4920x2160 s-dpi: 96 s-size: 1302x572mm (51.26x22.52")
    s-diag: 1422mm (55.99")
  Monitor-1: DP-3 mapped: DP-2 note: disabled pos: primary,top-right
    model: LG (GoldStar) Ultra HD serial: <filter> built: 2018 res: 3840x2160
    hz: 60 dpi: 163 gamma: 1.2 size: 600x340mm (23.62x13.39")
    diag: 690mm (27.2") ratio: 16:9 modes: max: 3840x2160 min: 640x480
  Monitor-2: HDMI-A-2 mapped: HDMI-0 note: disabled pos: bottom-l
    model: MSI MP251 serial: <filter> built: 2023 res: 1080x1920 hz: 60 dpi: 91
    gamma: 1.2 size: 302x543mm (11.89x21.38") diag: 623mm (24.5") ratio: 16:9
    modes: max: 1920x1080 min: 640x480
  API: OpenGL v: 4.6.0 vendor: nvidia v: 550.90.07 glx-v: 1.4
    direct-render: yes renderer: NVIDIA GeForce RTX 4070 SUPER/PCIe/SSE2
    memory: 11.71 GiB
  API: EGL Message: EGL data requires eglinfo. Check --recommends.
Audio:
  Device-1: NVIDIA AD104 High Definition Audio vendor: ASUSTeK
    driver: snd_hda_intel v: kernel pcie: gen: 3 speed: 8 GT/s lanes: 16
    link-max: gen: 4 speed: 16 GT/s bus-ID: 01:00.1 chip-ID: 10de:22bc
    class-ID: 0403
  Device-2: AMD Rembrandt Radeon High Definition Audio vendor: ASUSTeK
    driver: snd_hda_intel v: kernel pcie: gen: 4 speed: 16 GT/s lanes: 16
    bus-ID: 0d:00.1 chip-ID: 1002:1640 class-ID: 0403
  Device-3: AMD Family 17h/19h HD Audio vendor: ASUSTeK driver: snd_hda_intel
    v: kernel pcie: gen: 4 speed: 16 GT/s lanes: 16 bus-ID: 0d:00.6
    chip-ID: 1022:15e3 class-ID: 0403
  Device-4: Logitech C920 HD Pro Webcam driver: snd-usb-audio,uvcvideo
    type: USB rev: 2.0 speed: 480 Mb/s lanes: 1 mode: 2.0 bus-ID: 1-7:4
    chip-ID: 046d:0892 class-ID: 0102 serial: <filter>
  Device-5: XMOS EDIFIER S880DB driver: hid-generic,snd-usb-audio,usbhid
    type: USB rev: 2.0 speed: 480 Mb/s lanes: 1 mode: 2.0 bus-ID: 5-1:2
    chip-ID: 20b1:30a0 class-ID: 0300
  API: ALSA v: k6.9.4-200.fc40.x86_64 status: kernel-api
    tools: alsactl,alsamixer,amixer
  Server-1: JACK v: 1.9.22 status: off tools: N/A
  Server-2: PipeWire v: 1.0.7 status: active with: 1: pipewire-pulse
    status: active 2: wireplumber status: active 3: pipewire-alsa type: plugin
    tools: pw-cat,pw-cli,wpctl
Network:
  Device-1: Realtek RTL8125 2.5GbE vendor: ASUSTeK driver: r8169 v: kernel
    pcie: gen: 2 speed: 5 GT/s lanes: 1 port: d000 bus-ID: 08:00.0
    chip-ID: 10ec:8125 class-ID: 0200
  IF: eno1 state: down mac: <filter>
  Device-2: Realtek RTL8852BE PCIe 802.11ax Wireless Network
    vendor: AzureWave driver: rtw89_8852be v: kernel pcie: gen: 1 speed: 2.5 GT/s
    lanes: 1 port: c000 bus-ID: 09:00.0 chip-ID: 10ec:b852 class-ID: 0280
  IF: wlp9s0 state: up mac: <filter>
  Info: services: NetworkManager, sshd, wpa_supplicant
Bluetooth:
  Device-1: IMC Networks Bluetooth Radio driver: btusb v: 0.8 type: USB
    rev: 1.0 speed: 12 Mb/s lanes: 1 mode: 1.1 bus-ID: 1-5:2 chip-ID: 13d3:3571
    class-ID: e001 serial: <filter>
  Report: hciconfig ID: hci0 rfk-id: 0 state: up address: <filter> bt-v: 5.3
    lmp-v: 12 sub-v: b20f hci-v: 12 rev: dbc6 class-ID: 7c0104
  Info: acl-mtu: 1021:6 sco-mtu: 255:12 link-policy: rswitch hold sniff park
    link-mode: peripheral accept service-classes: rendering, capturing, object
    transfer, audio, telephony
Drives:
  Local Storage: total: 2.51 TiB used: 247.51 GiB (9.6%)
  SMART Message: Required tool smartctl not installed. Check --recommends
  ID-1: /dev/nvme0n1 maj-min: 259:6 vendor: Western Digital
    model: WD BLACK SN770 1TB size: 931.51 GiB block-size: physical: 512 B
    logical: 512 B speed: 63.2 Gb/s lanes: 4 tech: SSD serial: <filter>
    fw-rev: 731100WD temp: 36.9 C scheme: GPT
  ID-2: /dev/nvme1n1 maj-min: 259:0 vendor: SanDisk model: THNSN5256GPUK
    NVMe TOSHIBA 256GB size: 238.47 GiB block-size: physical: 512 B
    logical: 512 B speed: 31.6 Gb/s lanes: 4 tech: SSD serial: <filter>
    fw-rev: 5KDA4101 temp: 34.9 C scheme: GPT
  ID-3: /dev/nvme2n1 maj-min: 259:2 vendor: Samsung
    model: SSD 970 EVO Plus 500GB size: 465.76 GiB block-size: physical: 512 B
    logical: 512 B speed: 31.6 Gb/s lanes: 4 tech: SSD serial: <filter>
    fw-rev: 2B2QEXM7 temp: 36.9 C scheme: GPT
  ID-4: /dev/sda maj-min: 8:0 vendor: HGST (Hitachi) model: HTS721010A9E630
    size: 931.51 GiB block-size: physical: 4096 B logical: 512 B speed: 6.0 Gb/s
    tech: HDD rpm: 7200 serial: <filter> fw-rev: A3W0 scheme: GPT
Partition:
  ID-1: / raw-size: 464.16 GiB size: 464.16 GiB (100.00%)
    used: 28.95 GiB (6.2%) fs: btrfs dev: /dev/dm-0 maj-min: 253:0
    mapped: luks-d8d7c612-e097-4ce3-8773-a4a77c6cb4ac
  ID-2: /boot raw-size: 1024 MiB size: 973.4 MiB (95.06%)
    used: 780.7 MiB (80.2%) fs: ext4 dev: /dev/nvme2n1p2 maj-min: 259:4
  ID-3: /boot/efi raw-size: 600 MiB size: 598.8 MiB (99.80%)
    used: 19 MiB (3.2%) fs: vfat dev: /dev/nvme2n1p1 maj-min: 259:3
  ID-4: /home raw-size: 464.16 GiB size: 464.16 GiB (100.00%)
    used: 28.95 GiB (6.2%) fs: btrfs dev: /dev/dm-0 maj-min: 253:0
    mapped: luks-d8d7c612-e097-4ce3-8773-a4a77c6cb4ac
Swap:
  Kernel: swappiness: 60 (default) cache-pressure: 100 (default) zswap: no
  ID-1: swap-1 type: zram size: 8 GiB used: 0 KiB (0.0%) priority: 100
    comp: lzo-rle avail: lzo,lz4,lz4hc,842,zstd max-streams: 16 dev: /dev/zram0
Sensors:
  System Temperatures: cpu: 36.6 C mobo: N/A
  Fan Speeds (rpm): N/A
  GPU: device: nvidia screen: :1.0 temp: 37 C fan: 0% device: amdgpu
    temp: 33.0 C
Info:
  Memory: total: 32 GiB note: est. available: 30.56 GiB used: 2.92 GiB (9.6%)
  Processes: 467 Power: uptime: 2m states: freeze,mem suspend: deep
    avail: s2idle wakeups: 0 hibernate: disabled image: 12.19 GiB
    services: gsd-power, power-profiles-daemon, upowerd Init: systemd v: 255
    target: graphical (5) default: graphical tool: systemctl
  Packages: pm: flatpak pkgs: 36 Compilers: gcc: 14.1.1 Shell: Bash v: 5.2.26
    running-in: gnome-terminal inxi: 3.3.34

Here is the content of my /etc/default/grub:

Contents of /etc/default/grub
GRUB_TIMEOUT=5
GRUB_DISTRIBUTOR="$(sed 's, release .*$,,g' /etc/system-release)"
GRUB_DEFAULT=saved
GRUB_DISABLE_SUBMENU=true
GRUB_TERMINAL_OUTPUT="console"
GRUB_CMDLINE_LINUX="rd.driver.blacklist=nouveau modprobe.blacklist=nouveau rd.luks.uuid=luks-<UUID> rhgb quiet nvidia-drm.modeset=1 rd.driver.blacklist=nouveau modprobe.blacklist=nouveau"
GRUB_DISABLE_RECOVERY="true"
GRUB_ENABLE_BLSCFG=true

I have searched for solutions online and came across the following posts on Fedora Discussion and Reddit:

Other related issues in this forum and reddit

LUKS Encryption Password Screen not Showing
No Luks Password Prompt on 5.18.13
Not seeing LUKS Password Screen on Boot
LUKS login not displayed with kernel 6.6.6 and 6.6.7
Reddit - Dive into anything

Is there a proper fix - without workarounds - for this issue? Or should I wait for the next kernel release and hope things will be fixed?

1 Like

Removed amdgpu, audio, bluetooth, flatpak, pipewire, radeon

Could you try this :

When you are at the blank screen, can you hit Esc twice? To see if it changes from/to the Luks password screen.

Thanks for your response @hamrheadcorvette.

Here is what I tried:

  1. Cold boot - power on.
  2. Selected kernel 6.9.4 without editing the command.
  3. Then I’m shown a blank screen and I hit ESC twice. But I did not see any change.

Also tried this:

  1. Cold boot - power on
  2. Selected kernel 6.9.4 but this time I removed rhgb quiet from the linux command.
  3. Then I’m shown system boot messages. I hit ENTER first to get the prompt and then I can hit ESC to switch between two text-only password prompt screens - one contains boot messages above the prompt and the other screen shows me only the prompt and nothing else.

Also, I would like to keep the rhgb quiet option in my /etc/default/grub if possible and not permanently change it since I don’t want to always see the system boot messages.

Hello. I have exactly the same issue. When I try to boot with kernel 6.9.5, I only get a black screen.

Also using NVIDIA proprietary drivers from RPM Fusion.

The only solution that works for me is disabling rhgb quiet.

A better solution to this issue that has been discovered is disabling the Multi-Monitor option in UEFI/BIOS options, which enables graphical boot to work with LUKS and NVIDIA drivers in the most recent kernels.

3 posts were split to a new topic: Multi-monitor not available