I wasn't fully convinced these problems are due to the battery. That's why I
listed the four things I found "odd". On the other hand, I recall hearing and
reading that the output of lithium batteries is almost flat (better than any other type of
battery), but then very quickly drops (faster than any other type of battery) as it
reaches end-of-life.
Back to diagnosing the real cause of the problems...
Is there a Fedora command that I can use to check the hard drive (not the file systems)
for bad blocks, sectors, tracks, etc? Is there a Fedora command that I can use to check
the controller?
Both problems occurred immediately after doing a "dnf upgrade". What is that
telling us? Does "dnf upgrade" access the hard drive or the controller in a way
that normal daily use does not? Is there something different about the first boot after a
"dnf upgrade" vs other boots? I shut down every night, and boot up every
morning.
When I bought the system 4+ years ago, I bought separate parts. This is a DIY desktop. I
was advised to buy more power supply than needed. I did so. So unless the power supply
is failing, I would think it's not a good candidate for the cause of the two problems.
There have been no problems until this month, and I've been doing weekly patches
since I got the system in 2013.
I was/am not in the mood to change the battery! Since I've already bought the new one
and have no other use for it, and since the old one is 4+ years old, I plan to change the
battery either Friday or Saturday. But you know what they say: "If you want to make
God laugh, tell Him your plans!". I did watch the youtube that Tim provided. I
don't recall seeing screws on the underside of the motherboard. I'll look again
Friday or Saturday (God willing!).
Thanks,
Bill.