http://bugs.winehq.org/show_bug.cgi?id=33017
--- Comment #20 from Devil aftersun81@gmail.com 2013-03-24 07:57:16 CDT --- The file is on the device, and it can be seen from wine explorer, nothing has been removed from the device, except the Demo, GPX, Text and Voice directory, but I think these directories has no effect for the device detection, as it is working on Windows without these directories.
(In reply to comment #19)
When your Garmin is connected and you run:
wine explorer
Do you see a drive corresponding to you Garmin? Do you find the file \Garmin\GarminDevice.xml on this drive. If you can not see the file, the detection will fail.