[Bug 2083657] Re: Remove oem-flavour.cfg for the OEM kernel retirement

Shih-Yuan Lee 2083657 at bugs.launchpad.net
Sat Oct 5 14:41:39 UTC 2024 

** Description changed:

  [ Impact ]
  
-  * This affects all Ubuntu OEM preloaded systems which are still using OEM kernel.
-  * Expecially for those systems which are using NVIDIA graphic driver.
+  * This issue affects all Ubuntu OEM preloaded systems that are still utilizing the OEM kernel, particularly those equipped with NVIDIA graphics drivers.
+  * Systems may fail to boot properly due to an outdated OEM kernel conflicting with newer NVIDIA drivers, leading to a black screen on reboot.
  
  [ Test Plan ]
  
-  * We will check on the problematic system to see if
- /etc/default/grub.d/oem-flavour.cfg is removed.
+  * To verify the fix, ensure that the file `/etc/default/grub.d/oem-flavour.cfg` is successfully removed from the affected system after applying the update.
+  * Additionally, after the system reboots, check that it boots into the general HWE kernel rather than the OEM kernel.
  
  [ Where problems could occur ]
  
-  * N/A.
+  * Removing `/etc/default/grub.d/oem-flavour.cfg` may cause systems relying on the OEM kernel for specific hardware compatibility to lose access to certain OEM-specific optimizations.
+  * There is a low risk that after removing the OEM kernel, some hardware features may not function as expected if the general HWE kernel does not fully support them.
  
  [ Other Info ]
  
-  * This patch will be only applied to Ubuntu 22.04.
+  * This patch is targeted only for Ubuntu 22.04 and its associated OEM kernels.
+  * The issue is specific to systems using NVIDIA drivers in conjunction with an outdated OEM kernel, which conflicts with updates to the HWE kernel and NVIDIA packages.
  
  1) The release of Ubuntu you are using, via 'lsb_release -rd' or System -> About $ lsb_release -rd
  Description:	Ubuntu 22.04.4 LTS
  Release:	22.04
  $ ubuntu-report show | grep DCD
      "DCD": "canonical-oem-sutton-jammy-amd64-20240606-874"
  
  2) The version of the package you are using, via 'apt-cache policy pkgname' or by checking in Software Center
  $ apt-cache policy ubuntu-drivers-common
  ubuntu-drivers-common:
    Installed: 1:0.9.6.2~0.22.04.6
    Candidate: 1:0.9.6.2~0.22.04.7
    Version table:
       1:0.9.6.2~0.22.04.7 500
          500 http://tw.archive.ubuntu.com/ubuntu jammy-updates/main amd64 Packages
   *** 1:0.9.6.2~0.22.04.6 100
          100 /var/lib/dpkg/status
       1:0.9.6.1 500
          500 http://tw.archive.ubuntu.com/ubuntu jammy/main amd64 Packages
  
  3) What you expected to happen
- unattended-upgrades won't break the system.
+ 
+  * The system should seamlessly upgrade NVIDIA drivers and the HWE
+ kernel without breaking the boot process. The system should boot into
+ the latest supported HWE kernel without encountering compatibility
+ issues with the NVIDIA drivers.
  
  4) What happened instead
- unattended-upgrades upgraded the NVIDIA packages and the general HWE kernel that retired the OEM kernel in the background.
- After the system reboot, the screen keeps black because it boots the OEM kernel and the OEM kernel is still using the old nvidia prebuilt kernel module that is not met to the NVIDIA packages.
+ 
+  * After unattended-upgrades, the system rebooted into the OEM kernel,
+ which is outdated and incompatible with the new NVIDIA drivers. As a
+ result, the screen remained black upon reboot.
  
  We need to remove /etc/default/grub.d/oem-flavour.cfg to avoid the
  system booting from deprecated OEM kernels.

-- 
You received this bug notification because you are a member of Ubuntu
Sponsors, which is subscribed to the bug report.
https://bugs.launchpad.net/bugs/2083657

Title:
  Remove oem-flavour.cfg for the OEM kernel retirement

Status in OEM Priority Project:
  In Progress
Status in ubuntu-drivers-common package in Ubuntu:
  Won't Fix
Status in ubuntu-drivers-common source package in Jammy:
  In Progress

Bug description:
  [ Impact ]

   * This issue affects all Ubuntu OEM preloaded systems that are still utilizing the OEM kernel, particularly those equipped with NVIDIA graphics drivers.
   * Systems may fail to boot properly due to an outdated OEM kernel conflicting with newer NVIDIA drivers, leading to a black screen on reboot.

  [ Test Plan ]

   * To verify the fix, ensure that the file `/etc/default/grub.d/oem-flavour.cfg` is successfully removed from the affected system after applying the update.
   * Additionally, after the system reboots, check that it boots into the general HWE kernel rather than the OEM kernel.

  [ Where problems could occur ]

   * Removing `/etc/default/grub.d/oem-flavour.cfg` may cause systems relying on the OEM kernel for specific hardware compatibility to lose access to certain OEM-specific optimizations.
   * There is a low risk that after removing the OEM kernel, some hardware features may not function as expected if the general HWE kernel does not fully support them.

  [ Other Info ]

   * This patch is targeted only for Ubuntu 22.04 and its associated OEM kernels.
   * The issue is specific to systems using NVIDIA drivers in conjunction with an outdated OEM kernel, which conflicts with updates to the HWE kernel and NVIDIA packages.

  1) The release of Ubuntu you are using, via 'lsb_release -rd' or System -> About $ lsb_release -rd
  Description:	Ubuntu 22.04.4 LTS
  Release:	22.04
  $ ubuntu-report show | grep DCD
      "DCD": "canonical-oem-sutton-jammy-amd64-20240606-874"

  2) The version of the package you are using, via 'apt-cache policy pkgname' or by checking in Software Center
  $ apt-cache policy ubuntu-drivers-common
  ubuntu-drivers-common:
    Installed: 1:0.9.6.2~0.22.04.6
    Candidate: 1:0.9.6.2~0.22.04.7
    Version table:
       1:0.9.6.2~0.22.04.7 500
          500 http://tw.archive.ubuntu.com/ubuntu jammy-updates/main amd64 Packages
   *** 1:0.9.6.2~0.22.04.6 100
          100 /var/lib/dpkg/status
       1:0.9.6.1 500
          500 http://tw.archive.ubuntu.com/ubuntu jammy/main amd64 Packages

  3) What you expected to happen

   * The system should seamlessly upgrade NVIDIA drivers and the HWE
  kernel without breaking the boot process. The system should boot into
  the latest supported HWE kernel without encountering compatibility
  issues with the NVIDIA drivers.

  4) What happened instead

   * After unattended-upgrades, the system rebooted into the OEM kernel,
  which is outdated and incompatible with the new NVIDIA drivers. As a
  result, the screen remained black upon reboot.

  We need to remove /etc/default/grub.d/oem-flavour.cfg to avoid the
  system booting from deprecated OEM kernels.

To manage notifications about this bug go to:
https://bugs.launchpad.net/oem-priority/+bug/2083657/+subscriptions

More information about the Ubuntu-sponsors mailing list