Galileo Luna Trimix & Linux Mint

[Harro Lackmann]

EN:

Hi everyone,

I'm trying to download dive data from my Scubapro Galileo Luna Trimix
using Subsurface 6.0.5576 (AppImage) on Linux Mint 21.x.

Hardware:
- Dive computer: Scubapro Galileo Luna Trimix (only Air/Nitrox used, no Trimix)
- USB-IrDA Adapter 1: MosChip MCS7780 (Lindy brand)
- USB-IrDA Adapter 2: SigmaTel STIr4200 (Redbridge original)

Issue:
- MosChip: Error "Failed to set the DTR line" [in src/uwatec_aladin.c:109]
  Full log: "ERROR: Unpassender IOCTL (I/O-Control) für das Gerät (25)"
- SigmaTel: No /dev/ttyUSB0 created; IrDA kernel modules (irda, ircomm)
  appear to be missing in kernel 6.17

Both adapters work flawlessly under Windows with the same dive computer.

Questions:
1. Which entry in the dive computer list is correct for the Galileo Luna?
   (I only found "Aladin Air Z Nitrox" under Uwatec)
2. Is there a known workaround for the DTR error under Linux?

Any help or pointers would be greatly appreciated!

Best regards,

DE:
HarroHallo zusammen,

Ich versuche, meinen Scubapro Galileo Luna Trimix unter Linux Mint 21.x
mit Subsurface 6.0.5576 (AppImage) auszulesen.

Hardware:
- Tauchcomputer: Scubapro Galileo Luna Trimix (nur Air/Nitrox genutzt)
- USB-IrDA-Adapter 1: MosChip MCS7780 (Lindy)
- USB-IrDA-Adapter 2: SigmaTel STIr4200 (Redbridge original)

Problem:
- MosChip: Fehler "Failed to set the DTR line" [in src/uwatec_aladin.c:109]
- SigmaTel: Kein /dev/ttyUSB0, IrDA-Module fehlen im Kernel 6.17

Unter Windows funktionieren beide Sticks einwandfrei.

Fragen:
1. Welcher Eintrag in der Tauchcomputer-Liste ist für Galileo Luna korrekt?
   (In der Liste nur "Aladin Air Z Nitrox" gefunden)
2. Gibt es einen Workaround für den DTR-Fehler unter Linux?


Vielen Dank für Hilfe!

[Michael Keller]

Hi Harro.

On 21/04/2026 07:03, Harro Lackmann wrote:
> I'm trying to download dive data from my Scubapro Galileo Luna Trimix
> using Subsurface 6.0.5576 (AppImage) on Linux Mint 21.x.

IrDA support has been retired in practically all current Linux
distributions. This is documented in detail in our user manual:
https://subsurface-divelog.org/subsurface-user-manual/#S_ImportingIrDA

> Questions:
> 1. Which entry in the dive computer list is correct for the Galileo Luna?
>    (I only found "Aladin Air Z Nitrox" under Uwatec)

The correct model is 'Uwatec' / 'Galileo Luna'. As you will have seen on
Windows, this is available in operating systems that still support the
IrDA stack.

> 2. Is there a known workaround for the DTR error under Linux?

See above, consult the manual for possible workarounds.


Ngā mihi

  Michael Keller