Running memtest from the grub menu. The display looks okay except there is nothing moving as I expect to see. The only action is the red plus sign in the upper left.
There was a beep as the test started but no other indicator.
I'm looking into this because of
kernel: BUG: kernel NULL pointer dereference, address: 0000000000000000
Which others have reported as a bug but which has not been listed as a bug as far as I can tell.
In at least one report this turned out to be a bad memory card. Could be. This is a 10-year old PC that has three memory upgrades using three different RAM vendors. The types are all the same but this could easily be a bad old card.
