Greetings testers!
Please join us for upcoming Test Days [1] and help us improve Fedora’s quality and stability. Your participation helps us find and fix bugs before the next release, ensuring a smoother experience for all users.
This time, we’ll focus on the Linux kernel version 6.16, its stability and regressions.
Test period: 2025-08-10 to 2025-08-16
Test instructions: Test Day:2025-08-10 Kernel 6.16 Test Week - Fedora Project Wiki
Thank you for your contributions!
Kamil Paral
Fedora QA
Is there a need to undo the modifications I had to perform for 2025-08-10 Kernel 6.16 Test Week?
Or will the kernel be superseeded once released?
tag your post with kernel or quality-team so the right team gets notified
If the kernel works for you and there is no need to remove/replace it*, you should not need to do anything, and it should be automatically replaced once something newer is in stable while no other repo (testing or so) is enabled. However, I say “should” because usually I get koji kernels by dnf using the https links of koji to the very packages rather than using the installable koji tool.
I am quite confident it is the same there, but since I am not used to this tool, @kparal @adamwill or @sumantrom , could you confirm (just a thumbs up or so would suffice:) that people who use the steps of 2025-08-10 Kernel 6.16 Test Week are in the same situation and can rely on that the installed 6.16 will just be replaced “normally” with future kernel updates while future updates being as before from stable only? Short, no need to undo/adjust anything after the testing when the tested kernel works fine? (also useful information to me if that question comes up again in future)
* keep in mind that the kernel remains “testing” until it is pushed to stable, and for so long it has to be considered testing → if you want to stay with it or not is a decision you need to do yourself. Personally, I remain with 6.16, but I also always have my backups in place and in mind that what I currently do is not yet backed by a “finished” QA process. Don’t want to hyperbolize, but just remind that the kernel is not yet officially supported 
So if you want to go back to the older one for having the stability guarantees of the finished QA, an action is indeed necessary, but if staying with 6.16 is ok for you too, see my other points & wait for a confirmation…
Yes, downloading it from koji manually or using the cmdline tool is the same.
No need to revert, if the kernel works well for you. It will be upgraded in future, as usual. But the caveat written by Chris applies. If you want to be completely safe, select an older kernel in the grub bootloader (mash F8 or hold Shift during early boot), boot the older kernel, use rpm -qa | grep kernel | sort to list all kernel-related packages (you can also use sudo dnf list --extras to show packages which are currently not in your repos and select it from there), and then use dnf remove to remove those which match the kernel version you want to remove.