On Wed, Oct 21, 2026 at 10:32:07PM -0700, Bakul Shah wrote: > > One can buy a cheap inline USB power meter or tester to see > what sort of voltage/current is in use. Fancier ones such as > FNIRSI FNB48P that will let you see a realtime graph of > voltage/current at various sampling rates + you can upload > this data (+ there is vibe coded s/w to run on linux/mac for > this as well). Very useful for debugging this sort of > problems.
I have chopped a USB cable to bring out the power leads and connected them to a voltmeter in the past. That would seem adequate to identify a faulty power supply. I haven't tried it in this specific case, but given the absence of messages from umass other than those at boot, is there any point? Thanks for writing! bob prohaska
