I have replaced the power unit, taken it off the power strip an plugged 
both it and the Vanatage into the mains. I have replaced the powered hub 
(official RPi one...with another official RPi one) ...and here is what I am 
getting.......very dispirited! I have another Davis Weather Envoy which I 
will soon substitute for the one I am currently using.....but nothing seems 
to make a difference and the Envoy just will not wake up!

pi@raspberrypi:~ $ sudo tail -f /var/log/syslog
Jan 29 09:14:05 raspberrypi udisksd[766]: Mounted /dev/sda1 at 
/media/pi/e78ab10a-51d2-40f0-aa6d-5f2d2b0f27b7 on behalf of uid 1000
Jan 29 09:14:05 raspberrypi vncserver-x11[453,root]: SPrintConnMgr: Failed 
to add printer: server-error-service-unavailable
Jan 29 09:14:07 raspberrypi dhcpcd[338]: wlan0: no IPv6 Routers available
Jan 29 09:14:10 raspberrypi kernel: [   22.871754] Voltage normalised 
(0x00000000)
Jan 29 09:14:12 raspberrypi weewx[506]: vantage: Unable to wake up console
Jan 29 09:14:12 raspberrypi weewx[506]: import of driver failed: Unable to 
wake up Vantage console (<class 'weewx.WakeupError'>)
Jan 29 09:14:12 raspberrypi weewx[506]: engine: Unable to load driver: 
Unable to wake up Vantage console
Jan 29 09:14:12 raspberrypi weewx[506]:     ****  Exiting...
Jan 29 09:14:27 raspberrypi kernel: [   39.511958] Under-voltage detected! 
(0x00050005)
Jan 29 09:14:31 raspberrypi kernel: [   43.671921] Voltage normalised 
(0x00000000)
Jan 29 09:15:00 raspberrypi ntpd[467]: Soliciting pool server 103.239.8.22
Jan 29 09:15:00 raspberrypi ntpd[467]: Soliciting pool server 202.46.185.18
Jan 29 09:15:01 raspberrypi ntpd[467]: Soliciting pool server 203.99.128.48
Jan 29 09:15:01 raspberrypi ntpd[467]: Soliciting pool server 103.106.66.123
Jan 29 09:15:02 raspberrypi ntpd[467]: Soliciting pool server 103.242.68.69
Jan 29 09:15:02 raspberrypi ntpd[467]: Soliciting pool server 103.106.65.219
Jan 29 09:15:02 raspberrypi ntpd[467]: Soliciting pool server 103.242.70.5
Jan 29 09:15:02 raspberrypi ntpd[467]: Soliciting pool server 122.252.188.99
Jan 29 09:15:03 raspberrypi ntpd[467]: Soliciting pool server 130.217.226.51
Jan 29 09:15:03 raspberrypi ntpd[467]: Soliciting pool server 103.242.68.68
Jan 29 09:15:03 raspberrypi ntpd[467]: Soliciting pool server 203.99.128.34
Jan 29 09:15:04 raspberrypi ntpd[467]: Soliciting pool server 202.46.177.18
Jan 29 09:15:04 raspberrypi ntpd[467]: Soliciting pool server 
2407:f100:0:4::3
Jan 29 09:15:06 raspberrypi ntpd[467]: Soliciting pool server 202.46.178.18
Jan 29 09:17:41 raspberrypi systemd[584]: Time has been changed
Jan 29 09:17:41 raspberrypi systemd[1]: Time has been changed
Jan 29 09:17:41 raspberrypi systemd[1]: apt-daily.timer: Adding 9h 28min 
39.184756s random time.
Jan 29 09:17:41 raspberrypi systemd[1]: apt-daily-upgrade.timer: Adding 
27min 17.961005s random time.
Jan 29 09:18:28 raspberrypi kernel: [  126.872661] Under-voltage detected! 
(0x00050005)
Jan 29 09:18:34 raspberrypi kernel: [  133.112736] Voltage normalised 
(0x00000000)
Jan 29 09:18:34 raspberrypi CRON[1276]: (root) CMD (   cd / && run-parts 
--report /etc/cron.hourly)
Jan 29 09:22:29 raspberrypi kernel: [  368.155297] 
rpi_firmware_get_throttled: 2 callbacks suppressed
Jan 29 09:22:29 raspberrypi kernel: [  368.155304] Under-voltage detected! 
(0x00050005)
Jan 29 09:22:33 raspberrypi kernel: [  372.315315] 
rpi_firmware_get_throttled: 2 callbacks suppressed
Jan 29 09:22:33 raspberrypi kernel: [  372.315322] Voltage normalised 
(0x00000000)
Jan 29 09:24:27 raspberrypi kernel: [  486.716533] Under-voltage detected! 
(0x00050005)
Jan 29 09:24:34 raspberrypi kernel: [  492.956607] Voltage normalised 
(0x00000000)
Jan 29 09:26:28 raspberrypi kernel: [  607.357755] Under-voltage detected! 
(0x00050005)
Jan 29 09:26:32 raspberrypi kernel: [  611.517793] Voltage normalised 
(0x00000000)
Jan 29 09:26:45 raspberrypi ntpd[467]: 203.99.128.34 local addr 10.1.1.7 -> 
<null>
Jan 29 09:30:13 raspberrypi ntpd[467]: 103.239.8.22 local addr 10.1.1.7 -> 
<null>
Jan 29 09:30:45 raspberrypi ntpd[467]: 203.99.128.48 local addr 10.1.1.7 -> 
<null>
Jan 29 09:31:18 raspberrypi ntpd[467]: 122.252.188.99 local addr 10.1.1.7 
-> <null>
Jan 29 09:31:23 raspberrypi systemd[1]: Starting Cleanup of Temporary 
Directories...
Jan 29 09:31:23 raspberrypi systemd[1]: Started Cleanup of Temporary 
Directories.
Jan 29 09:32:22 raspberrypi ntpd[467]: 130.217.226.51 local addr 10.1.1.7 
-> <null>
Jan 29 09:32:59 raspberrypi kernel: [  998.401865] Under-voltage detected! 
(0x00050005)
Jan 29 09:33:03 raspberrypi kernel: [ 1002.561870] Voltage normalised 
(0x00000000)
Jan 29 09:33:05 raspberrypi kernel: [ 1004.643095] Under-voltage detected! 
(0x00050005)
Jan 29 09:33:12 raspberrypi kernel: [ 1010.882010] Voltage normalised 
(0x00000000)
Jan 29 09:33:22 raspberrypi kernel: [ 1021.282184] Under-voltage detected! 
(0x00050005)
Jan 29 09:33:34 raspberrypi kernel: [ 1033.762240] Voltage normalised 
(0x00000000)
Jan 29 09:34:42 raspberrypi ntpd[467]: 103.106.66.123 local addr 10.1.1.7 
-> <null>
Jan 29 09:35:16 raspberrypi ntpd[467]: 103.106.65.219 local addr 10.1.1.7 
-> <null>
Jan 29 09:38:17 raspberrypi kernel: [ 1316.645409] 
rpi_firmware_get_throttled: 12 callbacks suppressed
Jan 29 09:38:17 raspberrypi kernel: [ 1316.645416] Under-voltage detected! 
(0x00050005)
Jan 29 09:38:26 raspberrypi kernel: [ 1324.965452] 
rpi_firmware_get_throttled: 12 callbacks suppressed
Jan 29 09:38:26 raspberrypi kernel: [ 1324.965457] Voltage normalised 
(0x00000000)
Jan 29 09:38:28 raspberrypi kernel: [ 1327.045547] Under-voltage detected! 
(0x00050005)
Jan 29 09:38:32 raspberrypi kernel: [ 1331.205544] Voltage normalised 
(0x00000000)
Jan 29 09:38:36 raspberrypi kernel: [ 1335.365722] Under-voltage detected! 
(0x00050005)
Jan 29 09:38:55 raspberrypi kernel: [ 1354.085857] Voltage normalised 
(0x00000000)


On Tuesday, 29 January 2019 08:51:01 UTC+13, vince wrote:
>
> On Monday, January 28, 2019 at 11:34:08 AM UTC-8, monmul wrote:
>>
>> I do have a spare official power supply, so I will swap out that and 
>> test. ... I have a Pi3B+ on the way
>>
>
> Reminder, the pi3b+ need 'more' power and runs a little hotter than the 
> others, so definitely be certain you have a quality power supply.
>
> I have had great luck with 
> https://www.amazon.com/CanaKit-Raspberry-Power-Supply-Listed/dp/B07BC6WH7V 
> just as one example.  Also like the nice on/off switch dongle that came 
> with it.
>

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