Ubuntu 20.04.1 installed in my back up computer back in Sept. Worked fine over several tests, and uses including a few days ago. But yesterday, after a Ubuntu software upgrade, the screen just went black. Stayed black. No amount of keyboard key combinations, mouse movement or yelling at the black monitor made it come back. So did a hard reset. This system is 6 yo ASUS AMD Quad Core 64-bit. Standard setup, using the built-in video chip.
That reset behaved strangely, going to a repair screen. Eventually, I took a guess that there was a hardware issue, and guessed again that it might be the PS2 mouse driver. So pulled that mouse and plugged in a USB wireless mouse. That allowed the computer to boot, but it double pumps, every time. It cycles through, gets to the Gurb menu then reboots. IT DID NOT DO THIS BEFORE that upgrade. On the 2nd pass, it gets to the Gurb screen that allows me to choose Ubuntu 20.04 or Win10 and eventually boots.
So that's where it is now. It's usable with a USB mouse. I WANT TO BE ABLE TO USE THE PS2 MOUSE. But can't find any updated method to restore operation in 20.04.
And I'd like a way to fix the double boot sequence.
Anyone know how to restore the PS2 operation? THANKS!
PS I found this page...but have no idea what I'm suppose to do to restore operation...https://manpages.ubuntu.com/manpages/focal/man4/psm.4freebsd.html