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

[Pierre Ducroquet]

** Description changed:

  [ 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.
+  * 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.
  
  [ 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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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.

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

  [ Test Plan ]

   * 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.

  [ Where problems could occur ]

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

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