No boot after uddate - grub prompt

[tea for one]

The first grub option displays a kernel with an unusual nomenclature - 6.5.0-342405280420-generic
Where did it come from?

We can arrange grub to priority boot 6.5.0-41 if you wish?

[leejenon]

No idea where it came from. It's always been there since I had the problem. Maybe before - not sure.

Oh, that would be great if we can boot that version.

[tea for one]

Grub counts from 0 hence GRUB_DEFAULT=0 is the first line of the Grub menu, which will boot the latest installed kernel.
GRUB_DEFAULT="1>2"
The 1 in blue is the second line of the Grub menu i.e. Advanced Options for Ubuntu.
The 2 in red is the third option from the second line i.e the previous kernel.
Don’t forget to run sudo update-grub after editing the file.

sudo nano /etc/default/grub

GRUB_DEFAULT="1>2"

sudo update-grub

Also, you may wish to start a new thread with the object of deleting the unusual kernel.

[leejenon]

Oh, I see, so it's trying to boot a version with a weird kernel increment.

I changed the file -

GRUB_DEFAULT="1>2"
GRUB_TIMEOUT_STYLE=menu
GRUB_TIMEOUT=10
GRUB_DISTRIBUTOR=`lsb_release -i -s 2> /dev/null || echo Debian`
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash"
GRUB_CMDLINE_LINUX=""

I also did this -

plex@Mini-PC:~$ sudo update-grub
Sourcing file `/etc/default/grub'
Sourcing file `/etc/default/grub.d/init-select.cfg'
Generating grub configuration file ...
Found linux image: /boot/vmlinuz-6.5.0-342405280420-generic
Found initrd image: /boot/initrd.img-6.5.0-342405280420-generic
Found linux image: /boot/vmlinuz-6.5.0-41-generic
Found initrd image: /boot/initrd.img-6.5.0-41-generic
Found linux image: /boot/vmlinuz-6.5.0-35-generic
Found initrd image: /boot/initrd.img-6.5.0-35-generic
Memtest86+ needs a 16-bit boot, that is not available on EFI, exiting
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 ...
done
plex@Mini-PC:~$

Restarted

...but it is still stopping at the grub prompt.

Lee

[tea for one]

Is it the same malformed screen attached to post 16?

[leejenon]

Yes

[leejenon]

I am wondering if I create that other thread about those kernels. Remove them and set that attribute back to "0" it may help?

[leejenon]

I have to go now. I'll get back on this tomorrow. Thanks for your time. Lee

[tea for one]

When you boot the PC and the malformed grub screen appears, hit the enter key.
I hope that this will now boot into kernel 6.5.0-41-generic?

[leejenon]

I just read your reply and realised I didn't wait for the count down to finish. It then boots into 6.5.0-41.

Thanks for all your help, I've learnt a lot today.

Lee