Raspiblitz: Undervoltage Reports

[2000jago]

I have been having undervoltage reports for a while now so I ordered the power supply recommended from the shopping list which just arrived. I shut down the node hooked up the new powersupply and to my disappointment I STILL see "6 Undervoltage reports found..." message after start up again.

Now it could just be that these are "old" voltage reports, but I can see no way to "clear" them to see if new ones are being generated. (I would have assumed all existing undervoltage reports would be auto-cleared on a reboot but perhaps not?).

Where are these reports located and how can I delete them in order to know if new ones are still being generated?

[fluidvoice]

You're better off running the PowerTest.

PowerTest script (all in one line):

wget https://raw.githubusercontent.com/openoms/raspiblitz/powertest/home.admin/XXpowertest.sh && sudo chmod +x XXpowertest.sh && ./XXpowertest.sh

[2000jago]

Thanks! After running the test I (still) see "6 Undervoltage reports found..."

Test result was as follows:

---

RaspiBlitz powertest v0.1
Starting sysbench to run for 60 seconds (--max-time=60 --cpu-max-prime=10000)

---

sysbench 0.4.12: multi-threaded system evaluation benchmark

Running the test with following options:
Number of threads: 4

Doing CPU performance benchmark

Threads started!
68.8'C 1200/1400 MHz 1.2375V
73.1'C 1200/1400 MHz 1.2375V
74.1'C 1200/1400 MHz 1.2375V
75.2'C 1200/1400 MHz 1.2375V
75.8'C 1200/1400 MHz 1.2375V
75.8'C 1200/1400 MHz 1.2375V
77.4'C 1200/1400 MHz 1.2375V
76.8'C 1200/1400 MHz 1.2375V
Done.

Maximum prime number checked in CPU test: 10000

Test execution summary:
total time: 45.8014s
total number of events: 10000
total time taken by event execution: 183.1451
per-request statistics:
min: 13.89ms
avg: 18.31ms
max: 146.86ms
approx. 95 percentile: 37.08ms

Threads fairness:
events (avg/stddev): 2500.0000/32.21
execution time (avg/stddev): 45.7863/0.01

77.4'C 1200/1400 MHz 1.2375V
73.1'C 1200/1400 MHz 1.2375V
72.0'C 1200/1400 MHz 1.2375V
70.9'C 1200/1400 MHz 1.2375V
70.4'C 1200/1400 MHz 1.2375V
69.3'C 1200/1400 MHz 1.2375V
70.4'C 1200/1400 MHz 1.2V

[2000jago]

How to reset/clear these undervoltage reports? Anyone?

[bitsam]

I was getting under voltage errors and had to rebuild my node twice due to filesystem corruption. I decided to use a hdd with its own power supply. Since then, now under voltage errors.

[rootzoll]

How to reset/clear these undervoltage reports? Anyone?

The undervoltage reports are counted from the systemlog file - you can delete it to reset counts:
sudo rm /var/log/syslog