Bug#1117256: linux-image-6.12.48+deb13-amd64: Kernel can no longer activate ethernet on Dell WD19S docking station

Hi,

I think that I have a similar problem. I have a thinkpad X1 with a docking station.

With Bookworm I was able to connect external USB hard drives to the docking station. Now with Trixie the hard drives are not detected when the docking station is connected to the laptop. Even if the hard drives are connected directly to the laptop.

If I disconnect the docking station the hard drives are detected.

Thanks,

Daniel

On Sun, Oct 12, 2025 at 7:57 PM Salvatore Bonaccorso <carnil@debian.org> wrote:

Control: tags -1 + moreinfo

Hi Florian,

On Sun, Oct 05, 2025 at 02:23:15PM +0200, Florian Hars wrote:
> Package: src:linux
> Version: 6.12.48-1
> Severity: normal
>
> Dear Maintainer,
>
> when booting connected to a Dell WD19D docking station, my laptop can no longer activate
> the ethernet interface of the docking station. If I then unplug the laptop from the
> docking station, connect another laptop running Windows 11 to the docking station, wait,
> until it has enummerated all devices, unplug and then replug the laptop running debian,
> the network is detected and works (I am using it to send this report).
>
> The kernel log below misses the important bits, this is waht happened durin initial boot:

Thanks. With "no longer activate the ethernet interface" I assume this
means you can identify an earlier kernel revision which did not cause
the problem?

Two questions:

First please try to boot with the most current version available in
Debian unstable (6.16.11-1 right now), to see if the problem persist.

Secondly if you are able to pinpoint a range where the kernel
regressed, it would be great if you can bisect the changes between
those versions (if you need instructions let us know).

Regards,
Salvatore

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