** Changed in: oem-priority
Status: In Progress => Fix Committed
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https://bugs.launchpad.net/bugs/2083657
Title:
Remove oem-flavour.cfg for the OEM kernel retirement
Status in OEM Priority Project:
Fix Committed
Status in ubuntu-drivers-common package in Ubuntu:
Won't Fix
Status in ubuntu-drivers-common source package in Jammy:
Fix Committed
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* Systems may fail to boot properly due to an outdated OEM kernel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.
* After the system reboots, check that it boots into the general HWE kernel
rather than the OEM kernel.
* Idempotency Testing:
- Perform the upgrade multiple times on the same system to verify that the
upgrade process is idempotent, ensuring that repeated upgrades do not result in
unexpected behavior or changes.
* Non-OEM System Testing:
- Test the upgrade on a system without OEM kernels to ensure that the
upgrade does not affect systems that are not preloaded with the OEM kernel.
- Confirm that the system continues to function normally and boots into the
correct kernel after the update.
[ 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an outdated OEM kernel, which conflicts with updates to the HWE kernel and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:
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