I dive similar configurations, using a Petrel with Subsurface on Linux. Saving
a dive using an app can be problematic because the app does not allow several
items to be specified. A few pointers when using Linux. I assume the behavior
on Mac is identical.
On the Shearwater the cylinders/gases are defined in a specific order using the
System Setup panel. In the equipment tab of Subsurface I define my cylinders in
the same order. I have never encountered the type of problem you describe. Try
it out on either Linux or Mac. This will allow you to ascertain whether it is a
user problem, an iPhone app problem or a general problem. I suspect an app
problem. The app, as far as I can see, does not allow specification of
individual cylinders. If cylinders are not explicitly defined beforehand, you
have to trust the way that Shearwater defines the cylinders exported to the
Subsurface app and this is not guaranteed to be 100% intelligible to the Dive
log software. For that reason I save dives using Linux, keep master dive log on
Linux, and then synchronize the dive log on the app. I hope this makes sense.
Kind regards, willem.
Sent from Proton Mail mobile
-------- Original Message --------
On 10 Nov 2023, 22:41, Hartley Horwitz via subsurface wrote:
>> ---------- Forwarded message ----------
>> From: micha <mi...@michaelwerle.com>
>> To: subsurface@subsurface-divelog.org
>> Cc:
>> Bcc:
>> Date: Fri, 10 Nov 2023 08:29:05 +1000
>> Subject: Shearwater imports - phantom cylinders when additional gas mixes
>> are configured
>> .....snip....
>>
>> At the moment I'm diving Sidemount again, and again having issues with
>> spurious cylinders due to additional gasses being defined (although
>> disabled) on my Shearwater computer. Recreationally I dive with 2
>> cylinders filled with the same gas mix (typically Air or EAN32), and
>> both cylinders have a transmitter. I leave my computer in "Tec" mode and
>> leave the common mixes I use during other dives disabled instead of
>> deleting them.
>
> [HH] I dive the same sidemount configuration, Shearwater Teric and Perdix AI
> set in tech mode, Sidemount AI feature enabled (you didn't mention if that's
> the case for you). I also dive with a 3rd cylinder (deco) without a
> transmitter. I define 2 gases for dives with 3 cylinders, so 2 gases are
> "ON", 1 gas is "ACTIVE".
>
> I do a gas switch if diving with 3 tanks near the end of the dive even with
> no deco obligations
>
> Upon import, I see a slightly different issue. Firstly, it assumes that only
> 1 of my two sidemount tanks has EAN32 (an example) and defaults the 2nd tank
> to air. That takes a minor edit on the equipment tab on subsurface
>
> The gas switch event on Subsurface is switching tank 1 to tank 2 (my 2nd
> sidemount tank). Using the desktop UI, I switch that to my 3rd deco tank.
>
> I do not get unexpected gas switches like you've described when only dive 2
> tanks or choose not to switch to my deco bottle. I import my dives into
> Subsurface using an iPhone. This leads me to guess that the difference
> between your experience and mine is either the setup in your Shearwater, or
> the difference in the app you use to download into Subsurface (android for
> iOS).
>
>> ......snip......
>> I can manually fix the gas mix for Cylinders 1 & 2 using the UI. But
>> the only way to currently get rid of the phantom Cylinder 3 is by
>> manually editing the log files and deleting the initial gas change
>> event.
>>
>> Now, I see several simple approaches to allow the user to fix this using
>> the Subsurface UI:
>>
>> 1. Don't generate the initial "gaschange" event, which is wrong anyway.
>> (At this stage I'm not entirely sure if this is being sent by the dive
>> computer, or generated by Subsurface during the import process; still
>> investigating). Subsurface doesn't seem to need an initial "gaschange"
>> event to render a dive correctly.
>>
>> ............
>> I also contacted Shearwater about adding gas status (on/off) to their
>> protocol, but did not receive a reply.
>>
>> Thanks,
>> - Micha.
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