I found this Thread: 
https://groups.google.com/forum/#!msg/weewx-user/FdapyM5Ku0U/c03far_WAQAJ 
but the thread is old and I am hoping, the bug mentioned there was fixed.

Am Montag, 24. Oktober 2016 21:01:47 UTC+2 schrieb Roland Ehle:
>
> Hi all,
>
> I have now attached my WMR300 to an Intel NUC running Ubuntu 16.04 LTS. 
> Unfortunately weewx 3.6.1 is unable to read data from the station. 
> Apparantly the reason is, that the USB device is reset by the Kernel, 
> according to the log:
>
> Oct 24 20:57:01 lin01 weewx[932]: engine: Loading station type WMR300 
> (weewx.drivers.wmr300)
> Oct 24 20:57:01 lin01 weewx[932]: wmr300: driver version is 0.13
> Oct 24 20:57:01 lin01 weewx[932]: wmr300: Found station at bus= device=
> Oct 24 20:57:02 lin01 kernel: [ 2514.640999] usb 1-4: reset full-speed USB 
> device number 5 using xhci_hcd
>
> and Later:
>
> Oct 24 20:55:46 lin01 weewx[932]: engine: Starting up weewx version 3.6.1
> Oct 24 20:55:46 lin01 weewx[932]: engine: Station does not support reading 
> the time
> Oct 24 20:55:46 lin01 weewx[932]: wmr300: reading records since ******* 
> N/A *******     (    N/A   )
> Oct 24 20:55:46 lin01 weewx[932]: wmr300: read: failed attempt 1 of 5: 
> [Errno 110] Operation timed out
> Oct 24 20:55:49 lin01 weewx[932]: wmr300: read: failed attempt 2 of 5: 
> [Errno 110] Operation timed out
> Oct 24 20:55:52 lin01 weewx[932]: wmr300: read: failed attempt 3 of 5: 
> [Errno 110] Operation timed out
> Oct 24 20:55:55 lin01 weewx[932]: wmr300: read: failed attempt 4 of 5: 
> [Errno 110] Operation timed out
> Oct 24 20:55:58 lin01 weewx[932]: wmr300: read: failed attempt 5 of 5: 
> [Errno 110] Operation timed out
>
> I am about to give up and use a Raspberry Pi, but am hoping, that someone 
> has a hint.
>
> Thank you!
>
> Regards,
> Roland
>

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