After the installation of kernel 6.19, it refused to configure and complained about nvidia 590 driver. I removed the nividia drivers and set the driver to nouveau, and after rebooting to 6.18 kernel the 6.19 kernel was configured with no errors, but when trying to reboot to it it gives only black screens, with no vte (when loading from grub in safe mode it freezes after the line saying “apparmore.service - load AppArmor profiles.")
I am able to reboot with the old 6.18 kernel, but only to generic low-res graphic driver (neither nvidia nor nouveau work).
How can I find what is wrong with the 6.19 kernel?
Welcome to the development version.
Expect things like this to happen. You are now expected to file a bug report. The Ubuntu developers will then try to fix things.
If you run Software Updater you will be offered a Partial Upgrade. Do not accept. Just click Continue. The Partial upgrade will solve package conflicts by removing packages. That can brake the operating system. I have experienced this in the past.
My advice would be to continue loading the 6.18 kernel and update/upgrade every day and from time to time try and load the 6.19 kernel.
I also suggest that you become familiar with Friendly Recovery. At the Grub menu select Advanced Options for Ubuntu and then select a Linux kernel with a recovery Mode. Experiment with the recovery menu. Familiarity with the recovery menu is a useful skill.
There is another option. Update the Ubuntu 26.04 ISO image and re-install. The updated image may have a kernel that has been fixed. Images are compiled daily so they can be tested.
Regards.
Thank you. I had my share with setbacks like this, as I have been using ubuntu since 2005 and reported many bugs, and I know how to use the grub advanced options. I have managed to install nvidia 590 back on my 6.18 kernel and make it work, although 6.19 initramfs complained bitterly, and I intend to wait to newer kernel versions (but I made a live usb just in case).
I would like to report a bug about this issue, but I would really like to narrow it down. Should I just run ubuntu-bug against the malfunctioning kernel and hope for the best?
P. S. Note that there is no dependency problem, so I am not offered with any partial upgrades (which I know to stay away from). The kernel just fails to load (and also fails to accept the nvidia drivers during configuration)
I installed Ubuntu 26.04 LTS development branch a week ago. The initial update changed the kernel from Linux 6.14.0-37-generic to Linux 6.18.0-9-generic.
I did not update again until today (just now). It brought in the Linux 19.0.3-generic kernel. Which installed without problems. No invite to reboot. That is a change.
A power off and reboot went fine. It loaded to the login screen and from there to a desktop. I am posting from 26.04 now. I cannot confirm the problem you are having.
A crazy thought has entered my head. Have you removed snapd? Some people do. This is the problem if we remove snapd - mesa-2404 is a snap package. It could be that removing snapd prevents the open source driver from functioning.
A process of eliminating the impossible.
When you have eliminated the impossible, whatever remains, however improbable, must be the truth," Sir Arthur Conan Doyle
Regards
Thank you, that’s a neat idea. Unfortunately I did not remove snapd.
The bug regarding the nvidia configuration is already reported:
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