Garmin Mk2i - unlikely dive gas

[Dirk Hohndel]

> On Jun 13, 2022, at 5:31 AM, Mark wrote:
>> 
>> Ideally we'd figure out which one it is and have you send us just send that one file, but that puts the onus on you, if you don't mind sharing the data privately, you could simply put ALL of the .FIT files under Garmin/Activity on your Mk2i into a .zip file and send it off list to me and then I can figure this out here.
> It's all dives, not just particular ones. Well, all air dives anyway. Have not confirmed nitrox.  Without having looked into it at all, I'm hypothesizing something like the Garmin using a flag for air/not-air, and assigning the O2% a nonsensical value (null/zero) for air dives.

I have a Garmin Descent Mk2i myself and have done a fair number of air dives with it, so I don't believe this is a general issue.
But you may have set things up differently compared to the settings on mine - so I'll poke at your .FIT file and find out :)

> Was a little bit of a hassle. Mainly from distraction. I've just come back from a dive trip, where I was downloading the FITs onto my laptop and importing them. Now I'm back home I plugged my Garmin into my desktop and started fighting with Garmin USB. On my desktop I've installed drivers using Zadig to import directly into Subsurface, but now Subsurface is the only thing that works - I can no longer connect to my Garmin using MTP or via Garmin Express. Argh, Why can't Garmin make things that play nice? 

This is more a combination of the libraries that I chose to use for MTP communication - since we build across Linux, macOS, and Windows, I went for something that supports all three OSs to simplify life - and that one requires a different driver on Windows. So it seems a wee bit unfair to blame Garmin. That's more a Subsurface issue, to be honest.

/D

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