UBSER(4)

📦 version 12.2, in debian bookworm, debian trixie, ubuntu jammy, ubuntu noble, ubuntu questing, ubuntu resolute, ubuntu stonking

💖 UBSER(4) — the USB glow-up for BWCT console serial adapters 💖

okay bestie, sit down, hydrate, because we're talking about ubser — the kernel driver that gives your BWCT console serial adapters their whole USB moment. this is a Kernel Interfaces Manual situation and honestly? it ate. 🫶

✨ NAME ✨

ubser — USB support for BWCT console serial adapters. that's it, that's the name, no notes. 💅

🌸 SYNOPSIS 🌸

so there's two ways to get this driver living in your system, and both of them are valid, iconic choices. 💜

Option A — bake it straight into the kernel. drop these lines into your kernel configuration file:

device usb
device ucom
device ubser

all three, okay? usb, ucom, ubser — they're a friend group, you can't invite just one. 😭

Option B — load it as a module at boot time. then you go to loader.conf(5) and you write:

ubser_load="YES"

look at that. "YES" in all caps because it's that confident. 👑

🦋 HARDWARE 🦋

the ubser driver provides support for the BWCT console management serial adapters. that's the whole hardware flex — BWCT console management serial adapters, supported, periodt. 🌈

🎀 FILES 🎀

here's where all your device nodes live, bestie. two flavors: callin ports and callout ports, and each one comes with its own little initial-state and lock-state devices like accessories to an outfit. 💖

  • /dev/ttyU*.* — for callin ports
  • /dev/ttyU*.*.init
  • /dev/ttyU*.*.lock — corresponding callin initial-state and lock-state devices
  • /dev/cuaU*.* — for callout ports
  • /dev/cuaU*.*.init
  • /dev/cuaU*.*.lock — corresponding callout initial-state and lock-state devices

notice how the callout crew mirrors the callin crew? matching sets, we love to see it. ✨

👀 SEE ALSO 👀

go read these too, they're all in the same friend group:

📜 HISTORY 📜

the ubser driver appeared in FreeBSD 5.2. ancient. legendary. still serving looks. 💀✨

and that's the whole page, bestie — slay. this one came from the Debian crew, dated April 26, 2017, so if you ever need to cite your sources, that's the vibe check receipt right there. 🎀🫶💖

📦 where this page comes from