Have revisited darktable since last upgrades and it seems the issue is gone. Anyway, for the record, having several USB devices plugged in (as I often have) has no noticeable effect in my case. Whenever the issue happened a reboot should do the trick to have darktable working again. And it seemed suspending to RAM forth and back was a major source of trouble on this matter.
Antonio El lunes, 10 de julio de 2017 7:27:13 (WEST) David Bremner escribió: > Another user reported freezes due to interaction with gphoto and a > charging USB phone. If you have a phone charging in your computer, can > you verify that the freezes still happen without any phones or > non-essential USB devices attached. > > d