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| From | Ben Hutchings <ben@decadent.org.uk> |
| Newsgroups | linux.debian.kernel |
| Subject | Re: How is "keep two last kernels" policy implemented? |
| Date | Mon, 30 Mar 2026 16:20:01 +0200 |
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On Fri, 2026-03-27 at 06:15 +0100, Thibi wrote: > Hello team, > > I can't find any technical documentation about how Debian decides to keep two kernels, and which ones. I am particularly interested in understanding how the "manual" or "automatic" package installation flag may, or may not, influence the policy? > > Long story: something happened on my Trixie 13.4 which resulted in both current and previous kernels to become unusable. I asked apt to install the N-2 kernel and it worked, I can boot on it. Now I have: > > * Kernel N (last) - automatic - broken > * Kernel N-1 (before last) - automatic - broken > * Kernel N-2 - manual - working > > I wonder what will happen when a new kernel becomes available, and how I can have some influence on the automatic selection. > > Please could you point me to some documentation explaining the details? [...] APT has a special case for kernel packages, which is configurable. Search for "kernel" on <https://manpages.debian.org/trixie/apt/apt.conf.5.en.html>. Ben. -- Ben Hutchings Life would be so much easier if we could look at the source code.
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How is "keep two last kernels" policy implemented? Thibi <thierry.bissler@gmail.com> - 2026-03-27 06:20 +0100 Re: How is "keep two last kernels" policy implemented? Ben Hutchings <ben@decadent.org.uk> - 2026-03-30 16:20 +0200
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