DC imports vs. "ModemManager"

Martin Gysel me at bearsh.org
Sun Dec 29 16:32:26 UTC 2013

Am 30.12.2013 01:14, schrieb Lutz Vieweg:
> Hi all,
> while investigating the strange import failures that I experience
> (see thread "Some recent change completely broke the DC import")
> I found a very disturbing factor with imports (which, unluckily,
> after having been removed, does not my earlier reported issue):
> Some Linux distributions come with a obscure, started-by-default,
> not-to-be-easily-disabled and not very well documented software
> called "ModemManager", which will do funny things to all serial
> devices it finds.
> (Other people reported problems with this before:
> http://forums.fedoraforum.org/showthread.php?t=280484 ).
> Removing ModemManager did resolve one issue for me: Sometimes,
> Subsurface would report that ttyUSB0 was "busy". The Nth retry
> would then proceed.
> But as I said, removing ModemManager does not keep me from experiencing
> the "imports that seem to run fine, but leave me with no dives actually
> imported". Will try some more to find the conditions leading to that.

there also an archived discussion about mm and dc imports:


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