Swapping Kernels?

Support Kernel
21

what is the complete contents of your /etc/default/grub now?

22

Haha, NOW it says a command at line 8 is not found!!

full GRUB is :
GRUB_DEFAULT=saved
GRUB_TIMEOUT=5
GRUB_TIMEOUT_STYLE=menu
GRUB_DISTRIBUTOR=“Manjaro”
GRUB_CMDLINE_LINUX_DEFAULT=“quiet apparmor=1 security=apparmor udev.log_priority=3”
GRUB_CMDLINE_LINUX=“”
GRUB_DISABLE_OS_PROBER=false
Found theme: /usr/share/grub/themes/manjaro/theme.txt
Found linux image: /boot/vmlinuz-5.19-rt-x86_64
Found initrd image: /boot/intel-ucode.img /boot/initramfs-5.19-rt-x86_64.img
Found initrd fallback image: /boot/initramfs-5.19-rt-x86_64-fallback.img
fgrep: warning: fgrep is obsolescent; using grep -F
Warning: os-prober will be executed to detect other bootable partitions.
Its output will be used to detect bootable binaries on them and create new boot entries.
Adding boot menu entry for UEFI Firmware Settings …
Found memtest86+ image: /boot/memtest86+/memtest.bin
/usr/bin/grub-probe: warning: unknown device type nvme0n1.
done

23

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Your config file for grub seems to be a mess :wink:

24

One I did not create!! It is exactly as it was from the default Manjaro install…the only editing I have done is from THIS thread!!

And I would suggest “a mess” is exaggerated :wink:

Further, it has nothing to do with NOT booting…it has everything to do with Manjaro making it very difficult to swap kernel…what SHOULD be available under the Kernel in Settings Manager, and then reboot, is only available after some arcane grub editing work.

And finally INXI only provides info on the hardware which has NOTHING to do with this issue!

25

post your full grub:
cat /etc/default/grub
and use formatting, click this icon in editor: </>

26

Jumped back to a post from DarkCity - missed the very bottom comment previously - where it stated (paraphrased) that info under a certain line didn’t look as if it should be there…deleted all that, re-ran update-grub and I now can select kernel at boot.

Thanks

1 Like
27

Most of the PREEMPT_RT patches for pro-audio are included in kernel v6.0 ( v6.1 might be fully patched ) so there is not much additional benefit from using RT kernel

But RT kernel has CONFIG_IRQ_FORCED_THREADING=y by default so threadirqs boot option is not needed

1 Like
28

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