[SOLVED] 22.04 Boot stops just before KDE starts

[Schwarzer Kater]

Then as a next step I would suggest to reinstall the kernel that is not properly bootable from GRUB:
sudo apt install --reinstall --install-recommends linux-generic-hwe-22.04
and try again.

[ralfheinz]

Again: no luck – 5.15.0-76-generic boots, the rest doesn't

[oshunluvr]

Sound like you're possibly missing some additional packages for the 19 kernel. Try this:

dpkg -l |grep 5.15.0 |grep ii
dpkg -l |grep 5.19.0 |grep ii

Then compare the two lists to see if all extra stuff is there. On my system there's 4-5 related packages:

linux-headers-5.15.0-76
linux-headers-5.15.0-76-generic
linux-image-5.15.0-76-generic
linux-modules-5.15.0-76-generic
linux-modules-extra-5.15.0-76-generic

linux-headers-5.19.0-46-generic
linux-hwe-5.19-headers-5.19.0-46
linux-image-5.19.0-46-generic
linux-modules-5.19.0-46-generic
linux-modules-extra-5.19.0-46-generic

[ralfheinz]

oshunluvr Thanks for your hint. This is what I get with the two commands:

$ dpkg -l |grep 5.15.0 |grep ii
ii iproute2 5.15.0-1ubuntu2
ii linux-generic 5.15.0.76.74
ii linux-headers-5.15.0-76 5.15.0-76.83
ii linux-headers-5.15.0-76-generic 5.15.0-76.83
ii linux-headers-generic 5.15.0.76.74
ii linux-image-5.15.0-76-generic 5.15.0-76.83
ii linux-image-generic 5.15.0.76.74
ii linux-libc-dev:amd64 5.15.0-76.83
ii linux-modules-5.15.0-76-generic 5.15.0-76.83
ii linux-modules-extra-5.15.0-76-generic 5.15.0-76.83
ii linux-modules-nvidia-390-5.15.0-76-generic 5.15.0-76.83+5
ii linux-modules-nvidia-390-generic 5.15.0-76.83+5
ii linux-objects-nvidia-390-5.15.0-76-generic 5.15.0-76.83+5
ii linux-signatures-nvidia-5.15.0-76-generic 5.15.0-76.83+5

$ dpkg -l |grep 5.19.0 |grep ii
ii linux-generic-hwe-22.04 5.19.0.46.47~22.04.21
ii linux-headers-5.19.0-46-generic 5.19.0-46.47~22.04.1
ii linux-headers-generic-hwe-22.04 5.19.0.46.47~22.04.21
ii linux-hwe-5.19-headers-5.19.0-46 5.19.0-46.47~22.04.1
ii linux-image-5.19.0-46-generic 5.19.0-46.47~22.04.1
ii linux-image-generic-hwe-22.04 5.19.0.46.47~22.04.21
ii linux-modules-5.19.0-46-generic 5.19.0-46.47~22.04.1
ii linux-modules-extra-5.19.0-46-generic 5.19.0-46.47~22.04.1​

Compared to 5.15 (the booting version) there are less elements in the (not booting) 5.19 package. OK, it might be a bit childish to simply count the number of files.

[Schwarzer Kater]

So you should install the Nvidia driver again (it is missing for the 5.19 kernel) - if I am not mistaken the following should also install it for the 5.19 kernel even if you boot from the 5.15 one.

sudo ubuntu-drivers install nvidia:390
or - if ubuntu-drivers does not work - use:
sudo apt install --reinstall nvidia-driver-390

and reboot.

[oshunluvr]

This should do it for you:

sudo apt install linux-modules-nvidia-390-5.19.0-46-generic

As it installs (do it in Konsole so you can see what happens) you should see messages related to DKMS module builds. When it's complete, type this in:

dkms status

and you should see something like:

nvidia-390, 5.15.0-97-generic, x86_64: installed
nvidia-390, 5.19.0-46-generic, x86_64: installed

[ralfheinz]

BINGO! I can boot now with all three options!

I did it with the first mentioned line:

sudo ubuntu-drivers install nvidia:390

and then tried

dkms status

which led to the exact same result as you, oshunluvr predicted. I saw your response only after doing the install with the code from Schwarzer Kater . I guess the difference is that linux-modules-nvidia-390-5.19.0-46-generic installs only one component, while nvidia:390 installed approximately hundred or more.

I want to thank you all a thousand times. You deeply impressed me with your profound knowledge as well as your friendliness and your patience with a dumb noob like me. Did I learn from it? I don't want to exaggerate, but I feel myself a tiny bit smarter than two days before, that's at least something. Thank you.

[oshunluvr]

I had nVidia cards for years and learned how to manager their drivers. My last one died in 2020 and I switched to AMD. My life has definitely been easier since.