Re: Wi‑Fi and Bluetooth not detected when booting Debian 13 from external SSD (USB‑C enclosure)

From	Stefan Monnier <monnier@iro.umontreal.ca>
Newsgroups	linux.debian.user
Subject	Re: Wi‑Fi and Bluetooth not detected when booting Debian 13 from external SSD (USB‑C enclosure)
Date	2026-05-18 00:10 +0200
Message-ID	<MVRQl-5UPm-3@gated-at.bofh.it> (permalink)
References	<MVQKC-5TT5-5@gated-at.bofh.it>
Organization	linux.* mail to news gateway

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> After completing the installation, I moved the same SSD into a USB‑C
> external enclosure (Realtek RTL9210B‑CG) to use Debian as a portable
> system on my ASUS laptop.

What model of laptop is this, or more importantly what kind of wifi and
bluetooth hardware does it include?

> It seems that when Debian is booted from a USB‑C external SSD, the
> kernel does not enumerate internal PCIe devices (including the
> laptop’s Wi‑Fi/Bluetooth card).

I find this explanation very unlikely.  At most, it's possible that your
laptop's BIOS initializes the hardware differently when booting from an
external drive, but AFAIK the Linux kernel's code to enumerate the PCIe
devices proceeds exactly the same way regardless of how the kernel
was booted.

E.g. I'm pretty sure it does enumerate PCIe devices because otherwise it
probably wouldn't be able to access "itself" over the USB connection
because the USB controllers are themselves on the PCIe bus, nor would it
be able to configure the video card.


=== Stefan

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Thread

Wi‑Fi and Bluetooth not detected when booting Debian 13 from external SSD (USB‑C enclosure) behrooz kashaf <b.kashaf@gmail.com> - 2026-05-17 23:00 +0200
  Re: Wi‑Fi and Bluetooth not detected when  booting Debian 13 from external SSD (USB‑C enclosure) Stefan Monnier <monnier@iro.umontreal.ca> - 2026-05-18 00:10 +0200
  Re: Wi‑Fi and Bluetooth not detected when booting Debian 13 from external SSD (USB‑C enclosure) David Christensen <dpchrist@holgerdanske.com> - 2026-05-18 08:10 +0200
    Re: Wi‑Fi and Bluetooth not detected when booting Debian 13 from external SSD (USB‑C enclosure) behrooz kashaf <b.kashaf@gmail.com> - 2026-05-19 09:40 +0200
      Re: Wi‑Fi and Bluetooth not detected when  booting Debian 13 from external SSD (USB‑C enclosure) Stefan Monnier <monnier@iro.umontreal.ca> - 2026-05-19 20:50 +0200

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