[Bug 2127100] Re: [SRU] Fix kernel cmdline for Thor systems, drop incorrect chmod, block jammy do-release-upgrade

[Timo Aaltonen]

Hello Pierre, or anyone else affected,

Accepted nvidia-tegra-defaults into plucky-proposed. The package will
build now and be available at
https://launchpad.net/ubuntu/+source/nvidia-tegra-defaults/1.4ubuntu0.2
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, what testing has been
performed on the package and change the tag from verification-needed-
plucky to verification-done-plucky. If it does not fix the bug for you,
please add a comment stating that, and change the tag to verification-
failed-plucky. 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.

** Changed in: nvidia-tegra-defaults (Ubuntu Plucky)
       Status: In Progress => Fix Committed

** Tags added: verification-needed-plucky

** Changed in: nvidia-tegra-defaults (Ubuntu Noble)
       Status: In Progress => Fix Committed

** Tags added: verification-needed-noble

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https://bugs.launchpad.net/bugs/2127100

Title:
  [SRU] Fix kernel cmdline for Thor systems, drop incorrect chmod, block
  jammy do-release-upgrade

Status in nvidia-tegra-defaults package in Ubuntu:
  Fix Released
Status in nvidia-tegra-defaults source package in Jammy:
  In Progress
Status in nvidia-tegra-defaults source package in Noble:
  Fix Committed
Status in nvidia-tegra-defaults source package in Plucky:
  Fix Committed
Status in nvidia-tegra-defaults source package in Questing:
  Fix Committed

Bug description:
  [ Impact ]

   * The new Thor platform require an additional kernel command line
  parameter to properly function. The nvidia-tegra-defaults is already
  responsible for some specific kernel cmdline setup, adding these here
  will enable this new hardware.

   * Noble will not be supported on Orin platforms initially, blocking
  do-release-upgrade will prevent people from bricking their systems

   * While implementing these fixes, we realized a chmod was pushed
  previously in postinst that shouldn't be there.

  [ Test Plan ]

   * First bug : booting a Thor platform without this patch is not
  possible if there is not another workaround implemented. Booting the
  board with a noble image including this package without any manual
  change of the kernel command line must work.

   * Second bug: launching do-release-upgrade on a Jammy Orin system
  offers an upgrade to Noble while this will end up breaking most
  advanced features. After installing this updated package, do-release-
  upgrade offers no upgrade.

  [ Where problems could occur ]

   * Thor platforms could still not work if these kernel parameters are
  not enough.

   * Orin platforms could still upgrade from Jammy to Noble while this
  path is not usable yet.

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