Boot hang on Pi3B+ arm64 images with the latest boot.scr

[Łukasz Zemczak]

[Impact]

We still don't know exactly what causes the boot hang to happen on this device, but latest eoan arm64 test images hang on the Pi3B+ when a regular USB keyboard is attached. As we're continuing to find the root cause, for now we decided that we'll be reverting the boot.scr changes to not block further work.

The bug itself might be related to how ubuntu-image populates the boot partition. Still, the boot.scr changes were not needed in eoan, so it's safe to revert anyway.

[Test Case]

Build a test raspi3 image (armhf, arm64), flash various Pi devices and make sure they still boot. This change will be extensively tested by certification as well.

[Regression Potential]

As with any bootscript change, there might be subtle regressions regarding boot-ability in various edge scenarios. We will be performing extensive testing to make sure it does not regress. Also, this boot.scr that we're reverting to was already in use on the eoan original images, so it got a lot of testing on its own.

[Łukasz Zemczak (sil2100)]

Hello Łukasz, or anyone else affected,

Accepted flash-kernel into eoan-proposed. The package will build now and be available at https://launchpad.net/ubuntu/+source/flash-kernel/3.98ubuntu5.2 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 and change the tag from verification-needed-eoan to verification-done-eoan. If it does not fix the bug for you, please add a comment stating that, and change the tag to verification-failed-eoan. 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.

[Łukasz Zemczak (sil2100)]

Hello Łukasz, or anyone else affected,

Accepted flash-kernel into eoan-proposed. The package will build now and be available at https://launchpad.net/ubuntu/+source/flash-kernel/3.98ubuntu5.3 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 and change the tag from verification-needed-eoan to verification-done-eoan. If it does not fix the bug for you, please add a comment stating that, and change the tag to verification-failed-eoan. 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.

[Łukasz Zemczak (sil2100)]

Our latest -proposed test image seemed to be good. The Certification Team ran their tests on various Pi variants and gave a +1 on it.

[Launchpad Janitor (janitor)]

This bug was fixed in the package flash-kernel - 3.98ubuntu5.3

---------------
flash-kernel (3.98ubuntu5.3) eoan; urgency=medium

  * Add support for the Raspberry Pi 4 rev 1.2 board (LP: #1854487)

flash-kernel (3.98ubuntu5.2) eoan; urgency=medium

  * Reverted updated pi bootscript to work around boot regression in proposed
    eoan image (LP: #1854347).

 -- Dave Jones <email address hidden> Fri, 29 Nov 2019 16:33:13 +0000

[Łukasz Zemczak (sil2100)]

The verification of the Stable Release Update for flash-kernel 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.