On Monday, October 1, 2018 at 11:10:34 AM UTC-4, Manfred Larcher wrote:
>
> since I upgraded ubuntu 16.04 to 18.04 my WH1080 weather station is 
> unreachable.
> I did a reset of the station, powered it off (no batteries) and 
> reconnected it - same output.
>
>
if you want to figure out root cause, then start by making sure that the 
device shows up.

do 'sudo lsusb -v > no-station.txt' when the station is not plugged in.

then do 'sudo lsusb -v > with-station.txt' when the station is plugged in.

then post the difference 'diff no-station.txt with-station.txt'



if you would rather just get things to work, then install pyusb0.4 and 
libusb0.1 instead of pyusb1.0 and libusb1.0


some explanation: there are all kinds of variations in 
system/kernel/library configurations in pyusb1 and libusb1.  they are 
supposed to be backward compatible, and they are supposed to just work. 
 but they sometimes do not.  the 'usb' branch of the weewx code is an 
attempt push some of the usb detection and diagnostics into a usb module in 
the weewx codebase in order to make these diagnoses easier, as well as to 
facilitate running weewx on other platforms that do not have a reliable 
libusb (e.g., macos).  but the usb branch is still early alpha code.

m

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