After upgrading from kernel-6.17.11-300.fc43.x86_64 to kernel-6.17.12-300.fc43.x86_64, I’m unable to boot on the new kernel (the old one still works). I get the following error: VFS: Unable to mount root fs on unknown-block(0,0)
I tried reinstalling the kernel and running sudo /usr/bin/dracut --kver=6.17.12-300.fc43.x86_64 --force -v
But no luck. I’m using akmod-nvidia-580.119.02-1.fc43.x86_64 and Secure Boot is enabled with signed EFI, but not sure if this could be related (in particular when booting on the previous kernel still works).
Am I the only one having this issue with the latest kernel?
Because the kernel update completes. After the kernel update completes the driver build starts so one must wait for that to complete before rebooting so the new driver version is ready.
Similarly if the driver is updated the same applies. Wait for the build to complete before rebooting.
Could it be related to an unsigned kernel or module? SecureBoot is enabled on the host.
Edit: I ran sudo grub2-mkconfig -o /boot/grub2/grub.cfg and after a reboot, it worked. That’s strange because I don’t see any difference when comparing grubby output before and after running the command.
Sometimes a non-printing character ends up in configuration files so you won’t see a difference that is causing an error. Do you have a backup with the previous /boot/grub2/grub.cfg so you can do a byte-level comparison?
I wonder if one or both of those arguments may be the fault for you.
Neither is necessary on my system and have not been for quite some time. Loading the nvidia driver into the kernel during boot performs those steps automatically.
$ sudo dmesg | grep -iE 'secure|nvidia|nouveau'
[ 0.000000] Command line: BOOT_IMAGE=(hd5,gpt2)/vmlinuz-6.17.12-300.fc43.x86_64 root=/dev/mapper/fedora_root-root ro rd.lvm.lv=fedora_root/root rd.driver.blacklist=nouveau,nova_core modprobe.blacklist=nouveau,nova_core
[ 0.000000] secureboot: Secure boot enabled
[ 0.000000] Kernel is locked down from EFI Secure Boot mode; see man kernel_lockdown.7
[ 0.003600] secureboot: Secure boot enabled
[ 0.034624] Kernel command line: BOOT_IMAGE=(hd5,gpt2)/vmlinuz-6.17.12-300.fc43.x86_64 root=/dev/mapper/fedora_root-root ro rd.lvm.lv=fedora_root/root rd.driver.blacklist=nouveau,nova_core modprobe.blacklist=nouveau,nova_core
[ 7.098736] nvidia-nvlink: Nvlink Core is being initialized, major device number 234
[ 7.104292] nvidia 0000:06:00.0: vgaarb: VGA decodes changed: olddecodes=io+mem,decodes=none:owns=io+mem
[ 7.151516] NVRM: loading NVIDIA UNIX Open Kernel Module for x86_64 580.119.02 Release Build (dvs-builder@U22-I3-B15-03-5) Mon Dec 8 07:51:55 UTC 2025
[ 7.219695] nvidia-modeset: Loading NVIDIA UNIX Open Kernel Mode Setting Driver for x86_64 580.119.02 Release Build (dvs-builder@U22-I3-B15-03-5) Mon Dec 8 07:38:31 UTC 2025
[ 7.235393] input: HDA NVidia HDMI/DP,pcm=3 as /devices/pci0000:00/0000:00:03.1/0000:06:00.1/sound/card0/input16
[ 7.235778] input: HDA NVidia HDMI/DP,pcm=7 as /devices/pci0000:00/0000:00:03.1/0000:06:00.1/sound/card0/input17
[ 7.236086] input: HDA NVidia HDMI/DP,pcm=8 as /devices/pci0000:00/0000:00:03.1/0000:06:00.1/sound/card0/input18
[ 7.236173] input: HDA NVidia HDMI/DP,pcm=9 as /devices/pci0000:00/0000:00:03.1/0000:06:00.1/sound/card0/input19
[ 7.244589] [drm] [nvidia-drm] [GPU ID 0x00000600] Loading driver
[ 9.529718] [drm] Initialized nvidia-drm 0.0.0 for 0000:06:00.0 on minor 1
[ 9.566748] nvidia 0000:06:00.0: vgaarb: deactivate vga console
[ 10.013704] fbcon: nvidia-drmdrmfb (fb0) is primary device
[ 10.143363] nvidia 0000:06:00.0: [drm] fb0: nvidia-drmdrmfb frame buffer device
Note the lines at 7.219695 and the last 2 lines – as well as the kernel command line content.
