Please be considerate of us oldies who struggle with the technology.
I successfully booted from the CD and reinstalled Debian.
The purpose for doing this was that I was having pixel glitches on the
monitor and some freezes.
Thinking anything I've done that might be causing that will be
eradicated with a fresh install.
Well the pixel glitches are still there so I'm assuming the graphics
card is defective and I should get another one.
Interestingly the Krita documentation says that they aren't putting any
time into using the graphics card memory as they think graphics cards
will the defunct in the future.
I wondered if there is some way to examine graphics card memory and mark
as bad or something.
mick