Subj : USB locking up
To   : Ky Moffet
From : Barry Martin
Date : Sun Sep 20 2020 09:21:00


Hi Ky!

Created a script to log some of the (lm-)sensors values to a file:


while true; do echo $( date '+%H:%M:%S' ), $( sensors | grep 'V' | sed 
-r 's/^.* {8}\+(.*)øC  .*$/\1/' )    >> 
 '/home/barry/Sensors_Log/Log.txt' ;    sleep 0; done

Probably sloppy cookbook coding but does what I want: monitor voltages.

Did a test by plugging in a thumbdrive.  Did not cause a lockup (not
surprised) but suppose good for a baseline.

+12    Started at 12.10 then to 12.05.  Don't think the drop had
       anything to do with the insertion and removal of the thumbdrive.

+5     Constant 5.01.  Not that the thumbdrive draws that much but
       half-figured would vary at least a hundreth of a volt.

Vcore  Did vary but is constanty changing anyway.  0.91. 1.18, 1.27,
       1.25, 1.28, 1.12.

+3.3   Stayed at 3.22.

Vbatt  Stayed at 3.38.


Will randomly start the script and plug something in to see if can 
capture a lockup.

 
                         ¯    BarryMartin3@    ®
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