Thomas, Thanks for your help.  I found the problem.   The key was the in
syslog: "Apr 29 14:15:17 pgserver weewx[3502]:     ****  IndexError:
Invalid interface index 0".    I did set debug = 1 and viewed the new
syslog which basically had the same information as I posted previously.   I
switched USB ports to which the display was connected and weewx started
without error and connected right away to the display.  The web page at
localhost/weewx displayed the correct data.

Thanks again.

Allen




On Mon, Apr 29, 2019 at 7:06 PM Thomas Keffer <[email protected]> wrote:

> Hard to say much with such a little snippet of the log. Take a look at *Help!
> Posting to weewx-user
> <https://github.com/weewx/weewx/wiki/Help!-Posting-to-weewx-user>* on how
> to get a good log.
>
> -tk
>
> On Mon, Apr 29, 2019 at 2:15 PM Allen Gordon <[email protected]> wrote:
>
>> Installation of weewx on ubuntu 18.10 failed.  I installed with with
>> apt-get using the posted directions for ubuntu,
>>
>> sudo /etc/init.d/weewx -l status
>> Usage: /etc/init.d/weewx {start|stop|status|restart|reload}
>> judoal@pgserver:/etc/weewx$ sudo /etc/init.d/weewx  status -l
>> ● weewx.service - LSB: weewx weather system
>>    Loaded: loaded (/etc/init.d/weewx; generated)
>>    Active: active (exited) since Mon 2019-04-29 14:15:17 MDT; 1min 7s ago
>>      Docs: man:systemd-sysv-generator(8)
>>   Process: 3412 ExecStop=/etc/init.d/weewx stop (code=exited,
>> status=0/SUCCESS)
>>   Process: 3475 ExecStart=/etc/init.d/weewx start (code=exited,
>> status=0/SUCCESS)
>>
>> Apr 29 14:15:17 pgserver weewx[3502]:     ****    File
>> "/usr/lib/python2.7/dist-packages/usb/core.py", line 174, in
>> managed_release_interface
>> Apr 29 14:15:17 pgserver weewx[3502]:     ****      i =
>> cfg[(0,0)].bInterfaceNumber
>> Apr 29 14:15:17 pgserver weewx[3502]:     ****    File
>> "/usr/lib/python2.7/dist-packages/usb/core.py", line 641, in __getitem__
>> Apr 29 14:15:17 pgserver weewx[3502]:     ****      return
>> Interface(self.device, index[0], index[1], self.index)
>> Apr 29 14:15:17 pgserver weewx[3502]:     ****    File
>> "/usr/lib/python2.7/dist-packages/usb/core.py", line 460, in __init__
>> Apr 29 14:15:17 pgserver weewx[3502]:     ****      configuration
>> Apr 29 14:15:17 pgserver weewx[3502]:     ****    File
>> "/usr/lib/python2.7/dist-packages/usb/backend/libusb1.py", line 767, in
>> get_interface_descriptor
>> Apr 29 14:15:17 pgserver weewx[3502]:     ****      raise
>> IndexError('Invalid interface index ' + str(intf))
>> Apr 29 14:15:17 pgserver weewx[3502]:     ****  IndexError: Invalid
>> interface index 0
>> Apr 29 14:15:17 pgserver weewx[3502]:     ****  Exiting.
>>
>> The weewx configuration file is attached.
>>
>> Thanks in advance for help.
>>
>>
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