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Bug#1150352: linux-image-amd64: cannot upgrade from backported kernel 7.1.13 to 7.2.6

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  Bug#1150352: linux-image-amd64: cannot upgrade from backported kernel 7.1.13 to 7.2.6 Jason A Banks <jasontheporphyry@gmail.com> - 2026-10-09 00:40 +0200
    Processed: Re: Bug#1150352: linux-image-amd64: cannot upgrade  from backported kernel 7.1.13 to 7.2.6 "Debian Bug Tracking System" <owner@bugs.debian.org> - 2026-10-09 10:50 +0200
    Bug#1150352: linux-image-amd64: cannot upgrade from backported kernel 7.1.13 to 7.2.6 Salvatore Bonaccorso <carnil@debian.org> - 2026-10-09 10:50 +0200
      Bug#1150352: linux-image-amd64: cannot upgrade from backported kernel 7.1.13 to 7.2.6 Noah Meyerhans <noahm@debian.org> - 2026-10-09 15:30 +0200
    Bug#1150352: linux-image-amd64: cannot upgrade from backported kernel 7.1.13 to 7.2.6 Piotr Morgwai Kotarbinski <foss@morgwai.pl> - 2026-10-09 16:40 +0200
      Bug#1150352: linux-image-amd64: cannot upgrade from backported kernel 7.1.13 to 7.2.6 Piotr Morgwai Kotarbinski <foss@morgwai.pl> - 2026-10-09 21:40 +0200
    Processed: Re: Bug#1150352: linux-image-amd64: cannot upgrade  from backported kernel 7.1.13 to 7.2.6 "Debian Bug Tracking System" <owner@bugs.debian.org> - 2026-10-10 18:30 +0200
    Bug#1150352: linux-image-amd64: cannot upgrade from backported kernel 7.1.13 to 7.2.6 Ben Hutchings <ben@decadent.org.uk> - 2026-10-10 18:30 +0200

#94400 — Bug#1150352: linux-image-amd64: cannot upgrade from backported kernel 7.1.13 to 7.2.6

Package: linux-image-amd64
Version: 7.1.13-1~bpo13+1
Severity: normal
X-Debbugs-Cc: jasontheporphyry@gmail.com

Dear Maintainer,

*** Reporter, please consider answering these questions, where appropriate ***

   * What led up to the situation?
Attempting a routine package upgrade via KDE's Discovery app
   * What exactly did you do (or not do) that was effective (or
     ineffective)?
Clicked on "refresh" and then "update all"
   * What was the outcome of this action?
<html>Dependency resolution failed:<br/><br/>The following packages have unmet
dependencies:
  linux-image-amd64: Depends: linux-base-amd64 (= 7.1.13-1~bpo13+1) but
7.2.6-1~bpo13+1 is to be installed
</html>
   * What outcome did you expect instead?
I expected a successful kernel update as happened from 7.1.8 to 7.1.13. I had
not changed any settings in Discover. I have had no issues with my boot
partition. I tried to update using apt, but that too does not work. Neither
linux-base-amd64  nor linux-image-amd64 will upgrade. Otherwise, the system
function normally.

*** End of the template - remove these template lines ***


-- System Information:
Debian Release: 13.7
  APT prefers stable-updates
  APT policy: (500, 'stable-updates'), (500, 'stable-security'), (500, 'stable')
Architecture: amd64 (x86_64)

Kernel: Linux 7.1.13+deb13-amd64 (SMP w/16 CPU threads; PREEMPT)
Locale: LANG=C.UTF-8, LC_CTYPE=C.UTF-8 (charmap=UTF-8), LANGUAGE not set
Shell: /bin/sh linked to /usr/bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled

Versions of packages linux-image-amd64 depends on:
ii  linux-base-amd64                7.1.13-1~bpo13+1
ii  linux-image-7.1.13+deb13-amd64  7.1.13-1~bpo13+1

linux-image-amd64 recommends no packages.

linux-image-amd64 suggests no packages.

-- no debconf information

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#94403 — Processed: Re: Bug#1150352: linux-image-amd64: cannot upgrade from backported kernel 7.1.13 to 7.2.6

Processing control commands:

> reassign -1 src:linux 7.1.13-1~bpo13+1
Bug #1150352 [linux-image-amd64] linux-image-amd64: cannot upgrade from backported kernel 7.1.13 to 7.2.6
Bug reassigned from package 'linux-image-amd64' to 'src:linux'.
No longer marked as found in versions linux-signed-amd64/7.1.13+1~bpo13+1.
Ignoring request to alter fixed versions of bug #1150352 to the same values previously set
Bug #1150352 [src:linux] linux-image-amd64: cannot upgrade from backported kernel 7.1.13 to 7.2.6
Marked as found in versions linux/7.1.13-1~bpo13+1.
> tags -1 + moreinfo
Bug #1150352 [src:linux] linux-image-amd64: cannot upgrade from backported kernel 7.1.13 to 7.2.6
Added tag(s) moreinfo.

-- 
1150352: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1150352
Debian Bug Tracking System
Contact owner@bugs.debian.org with problems

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#94404

Control: reassign -1 src:linux 7.1.13-1~bpo13+1
Control: tags -1 + moreinfo

Hi,

On Thu, Oct 08, 2026 at 05:37:20PM -0500, Jason A Banks wrote:
> Package: linux-image-amd64
> Version: 7.1.13-1~bpo13+1
> Severity: normal
> X-Debbugs-Cc: jasontheporphyry@gmail.com
> 
> Dear Maintainer,
> 
> *** Reporter, please consider answering these questions, where appropriate ***
> 
>    * What led up to the situation?
> Attempting a routine package upgrade via KDE's Discovery app
>    * What exactly did you do (or not do) that was effective (or
>      ineffective)?
> Clicked on "refresh" and then "update all"
>    * What was the outcome of this action?
> <html>Dependency resolution failed:<br/><br/>The following packages have unmet
> dependencies:
>   linux-image-amd64: Depends: linux-base-amd64 (= 7.1.13-1~bpo13+1) but
> 7.2.6-1~bpo13+1 is to be installed
> </html>
>    * What outcome did you expect instead?
> I expected a successful kernel update as happened from 7.1.8 to 7.1.13. I had
> not changed any settings in Discover. I have had no issues with my boot
> partition. I tried to update using apt, but that too does not work. Neither
> linux-base-amd64  nor linux-image-amd64 will upgrade. Otherwise, the system
> function normally.

Can you please provide the output of:

apt-get update
apt-get -t trixie-backports -s install linux-image-amd64

Regards,
Salvatore

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#94416

On Fri, Oct 09, 2026 at 10:39:52AM +0200, Salvatore Bonaccorso wrote:
> > Package: linux-image-amd64
> > Version: 7.1.13-1~bpo13+1
> > Severity: normal
> > X-Debbugs-Cc: jasontheporphyry@gmail.com
> > 
> > Dear Maintainer,
> > 
> > *** Reporter, please consider answering these questions, where appropriate ***
> > 
> >    * What led up to the situation?
> > Attempting a routine package upgrade via KDE's Discovery app
> >    * What exactly did you do (or not do) that was effective (or
> >      ineffective)?
> > Clicked on "refresh" and then "update all"
> >    * What was the outcome of this action?
> > <html>Dependency resolution failed:<br/><br/>The following packages have unmet
> > dependencies:
> >   linux-image-amd64: Depends: linux-base-amd64 (= 7.1.13-1~bpo13+1) but
> > 7.2.6-1~bpo13+1 is to be installed
> > </html>
> >    * What outcome did you expect instead?
> > I expected a successful kernel update as happened from 7.1.8 to 7.1.13. I had
> > not changed any settings in Discover. I have had no issues with my boot
> > partition. I tried to update using apt, but that too does not work. Neither
> > linux-base-amd64  nor linux-image-amd64 will upgrade. Otherwise, the system
> > function normally.
> 
> Can you please provide the output of:
> 
> apt-get update
> apt-get -t trixie-backports -s install linux-image-amd64

The cloud team encountered similar failures during trixie-backports
image builds. See [1] for an example.  I believe that this was a
transient archive issue that was resolved when 7.2.6-1~bpo13+1 was
uploaded to trixie-backports.

It might be worth asking the archive operations team to investigate.

noah

1. https://salsa.debian.org/cloud-admin-team/debian-cloud-images-daily/-/jobs/10419119

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#94420

This seems to be a bug in `apt`, I've filed https://bugs.debian.org/1150427

Cheers!

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#94425

So as explained in #1150427, this is the intended `apt` behavior and there's currently no mechanism to work-around it automatically.
A manual solution for situation like this (a new dependency on a version not available in the "base" 500-prio suites) is to "re-tell" `apt` to install any needed dependencies from `trixie-backports` with
```
apt install -t trixie-backports linux-image-amd64
```

Cheers!


On Fri, 9 Oct 2026 16:16:15 +0200 Piotr Morgwai Kotarbinski <foss@morgwai.pl> wrote:
> This seems to be a bug in `apt`, I've filed https://bugs.debian.org/1150427
> 
> Cheers!
> 
> 

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#94428 — Processed: Re: Bug#1150352: linux-image-amd64: cannot upgrade from backported kernel 7.1.13 to 7.2.6

Processing control commands:

> tag -1 wontfix
Bug #1150352 [src:linux] linux-image-amd64: cannot upgrade from backported kernel 7.1.13 to 7.2.6
Added tag(s) wontfix.

-- 
1150352: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1150352
Debian Bug Tracking System
Contact owner@bugs.debian.org with problems

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#94429

[Multipart message — attachments visible in raw view] — view raw

Control: tag -1 wontfix

This is intentional APT policy and I don't plan to work around it.

Ben.

-- 
Ben Hutchings
For every complex problem
there is a solution that is simple, neat, and wrong.

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