Kernel 5.18.19 booting into emergency mode

If I choose kernel 5.18.18 at the boot screen, everything works. I have saved journalctl -b and rdsosreport from the abortive 5.18.19 boot, so if someone can tell me what to look for, I will.

I do note that rdsosreport ends with

[    8.167969] fedora systemd[1]: Reached target - Switch Root.
[    8.169173] fedora systemd[1]: Starting initrd-switch-root.service - Switch Root...
[    8.173647] fedora systemctl[813]: Failed to switch root: Specified switch root path '/sysroot' does not seem to be an OS tree. os-release file is missing.
[    8.174257] fedora systemd[1]: initrd-switch-root.service: Main process exited, code=exited, status=1/FAILURE
[    8.174363] fedora systemd[1]: initrd-switch-root.service: Failed with result 'exit-code'.
[    8.190138] fedora systemd[1]: Failed to start initrd-switch-root.service - Switch Root.
[    8.195075] fedora systemd[1]: Startup finished in 45.475s (firmware) + 4.163s (loader) + 4.133s (kernel) + 0 (initrd) + 4.062s (userspace) = 57.834s.
[    8.195115] fedora systemd[1]: initrd-switch-root.service: Triggering OnFailure= dependencies.
[    8.195176] fedora audit[1]: SERVICE_START pid=1 uid=0 auid=4294967295 ses=4294967295 subj=kernel msg='unit=initrd-switch-root comm="systemd" exe="/usr/lib/systemd/systemd" hostname=? addr=? terminal=? res=failed'
[    8.195991] fedora systemd[1]: Started emergency.service - Emergency Shell.

But I don’t see why this should happen with 5.18.19 but not with 5.18.18.

What is sysroot? Where is it? How is os-release created? There’s one in /usr/lib, but it has info only on the F36 release; nothing specific to the kernel version.

Before this point, I had been trying to install Nvidia’s cuda-repo-fedora35-11-7-local-11.7.1_515.65.01-1.x86_64.rpm, which is only approved for F35, so that may well be the root of the problem, since I ended up having to remove the Nvidia drivers and move to nouveau.

Take a look here please and thanks.

1 Like

I. Remove that repo.
2. ls -l /etc/os-release will show you the file info and cat /etc/os-release will show the content. It does not show the kernel, only the distro and release version.
3. It is quite possible to remove the 5.18.19 kernel then reinstall and it would likely fix the issue.
dnf remove kernel*5.18.19*
dnf upgrade
4. Install the nvidia driver and the cuda software from rpmfusion. Installing from nvidia means you have to manually update every time there is a kernel update and there are likely packaging conflicts as well.
Installing from rpmfusion will automatically do updates of the software and video drivers for you going forward. The packages from rpmfusion are tweaked and tested for use with fedora.