Unfortunately reinstalling fails because among other things, it does not recognize the USB WiFi adapter. I recall that thus required some fiddling when I started using it here last year. But what fiddling?
Worse, I do not have a working OS to boot to fiddle with this. I will attempt to go back one version that I have installed in the past. I fear that I will need to install this by moving the PC in house where I can connect Ethernet. I am beginning to regret Linux.
It seems to be connecting to a network time server so WiFi must be working.
I have successfully installed an old version of linuxCNC. I have a browser but no WiFi. This tells how but I need to bring it in the house for an Ethernet cable to download the WiFi drivers!
I brought inside, plugged in an Ethernet cable, reinstalled linuxCNC 2.7. Now, with access to the many needed resources, it did a full install. I used the instructions above to get WiFi working, installed emacs, ddd (a very nice graphical debugger for C), eclipse (in case I get the energy to write C++ again). Then I updated to linuxCNC 2.8. I restored all the files that i backed up yesterday. All is working again.
UPDATE: Except + and - mov all axes the same direction. Reinstalled again without the latest linkCNC updates. No bedtter. While researching this at linkCNCForum, I saw mention of problems associated with bad connection of parallel port card in PCI slot. So I started by making sure that I had a tight connection to the port. No luck. Before opening the box, I noticed that the parallel port to controller box has a USB cord to it, providing power. When I moved the tower back to the shop each time, I missed plugging this back into the tower's USB port. Problem solved!
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