[SRU] Add nvidia-tegra-defaults to jammy

[Loïc Minier]

Hi,

[Impact]
As part of the work to enable NVIDIA Tegra hardware with Ubuntu and under the wider "hardware enablement" umbrella of SRUs, we've landed kernels for Tegra Orin and later devices in Ubuntu (linux-nvidia-tegra and linux-nvidia-tegra-igx). We are developing pre-installed images at https://cdimage.ubuntu.com/nvidia-tegra/ using these image definitions:
https://git.launchpad.net/ubuntu-images/tree/?h=jammy

Currently, our images can't display GRUB on the serial console and don't bring up a getty on the serial console, the GRUB config needs to be tweaked for this platform.

We've landed this nvidia-tegra-defaults package to carry the relevant GRUB config file in mantic, this bug is to backport it to jammy-updates.

[Test Plan]
Change the image definition to add nvidia-tegra-defaults in extra-packages (there's is no defined seed-like approach to add hwe packages in image definition files at the moment), and enable proposed, build an image with sudo /snap/bin/ubuntu-image, and verify that the GRUB config contains the relevant changes:
- GRUB menu visible on serial for 3s by default
- kernel cmdline tweaked to list console=ttyTCU,115200 console=tty0

Optionally, verify this works on actual Tegra Orin hardware (Jetson AGX or IGX would be ideal).

[Where problems could occur]
As this is an extra package not listed in any image definitions and the images are still under development, no problem is expected to occur for current Ubuntu users.

Best,

[Steve Langasek (vorlon)]

Hello Loïc, or anyone else affected,

Accepted nvidia-tegra-defaults into jammy-proposed. The package will build now and be available at https://launchpad.net/ubuntu/+source/nvidia-tegra-defaults/1.2~22.04 in a few hours, and then in the -proposed repository.

Please help us by testing this new package. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation on how to enable and use -proposed. Your feedback will aid us getting this update out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug, mentioning the version of the package you tested, what testing has been performed on the package and change the tag from verification-needed-jammy to verification-done-jammy. If it does not fix the bug for you, please add a comment stating that, and change the tag to verification-failed-jammy. In either case, without details of your testing we will not be able to proceed.

Further information regarding the verification process can be found at https://wiki.ubuntu.com/QATeam/PerformingSRUVerification . Thank you in advance for helping!

N.B. The updated package will be released to -updates after the bug(s) fixed by this package have been verified and the package has been in -proposed for a minimum of 7 days.

[Loïc Minier (lool)]

We did some further testing with this package and while it worked as originally intended, and we noticed a couple of issues that need to be addressed:
- this is only patching the GRUB default entry, not the recovery entry, but we want this patched too
- the kernel cmdline should include extra consoles (console=ttyAMA0 on top of ttyTCU0) and perhaps a workaround to select the proper framebuffer driver (efifb can't be fixed in the near term, so needs to be disabled and the kernel needs a bit of handholding to select the right fb driver)

We're working to confirm the exact cmdline, in the meantime I'm marking this as verification-failed.

[Loïc Minier (lool)]

I've tested and uploaded 1.3 for mantic addressing all issues listed here and have uploaded a backport to jammy which is in the archive review queue

[Łukasz Zemczak (sil2100)]

Hello Loïc, or anyone else affected,

Accepted nvidia-tegra-defaults into jammy-proposed. The package will build now and be available at https://launchpad.net/ubuntu/+source/nvidia-tegra-defaults/1.3~22.04.1 in a few hours, and then in the -proposed repository.

Please help us by testing this new package. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation on how to enable and use -proposed. Your feedback will aid us getting this update out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug, mentioning the version of the package you tested, what testing has been performed on the package and change the tag from verification-needed-jammy to verification-done-jammy. If it does not fix the bug for you, please add a comment stating that, and change the tag to verification-failed-jammy. In either case, without details of your testing we will not be able to proceed.

Further information regarding the verification process can be found at https://wiki.ubuntu.com/QATeam/PerformingSRUVerification . Thank you in advance for helping!

N.B. The updated package will be released to -updates after the bug(s) fixed by this package have been verified and the package has been in -proposed for a minimum of 7 days.

[Pedro Henrique Kopper (phckopper)]

Tested 1.3~22.04.1 on a NVIDIA Jetson AGX running Ubuntu 22.04 (5.15.0-1004-nvidia-tegra-igx aarch64).

- GRUB menu is visible on serial for 3s
- Both default and recovery mode entries correctly spawn consoles on ttyTCU0 and ttyAMA0
- Framebuffer parameters are set correctly

Therefore, the package can be considered successfully verified.

[Launchpad Janitor (janitor)]

This bug was fixed in the package nvidia-tegra-defaults - 1.3~22.04.1

---------------
nvidia-tegra-defaults (1.3~22.04.1) jammy; urgency=medium

  * Backport to jammy; LP: #2037096.

 -- Loïc Minier <email address hidden> Mon, 09 Oct 2023 16:51:16 +0000

[Andreas Hasenack (ahasenack)]

The verification of the Stable Release Update for nvidia-tegra-defaults has completed successfully and the package is now being released to -updates. Subsequently, the Ubuntu Stable Release Updates Team is being unsubscribed and will not receive messages about this bug report. In the event that you encounter a regression using the package from -updates please report a new bug using ubuntu-bug and tag the bug report regression-update so we can easily find any regressions.