Dell Inspiron 5755 Upgraded from 20.04 to 22.04 (had a little trouble there with a package) and then upgraded from 22.04 to 24.04
Upgraded yesterday. Didn't have a problem with mouse/trackpad/and laptop touch pad. Today, I'm using Firefox and the mouse arrow locked. mouse/trackpad/and laptop touch pad all didn't work.
Then all by itself it shuts itself off.(no it didn't, SEE UPDATE AT BOTTOM)
I have a wired Elecom mouse and a Keymecher touchpad.
This only (so far) happened while in Firefox. The windows would blank out a couple of times, lock the mouse/trackpad/and laptop touch pad and then appear to shut itself off.
UPDATE: it doesn't shut itself off. I just assumed it did and I took the power cord off and removed battery before hard restart.
It happened again and I pulled the mouse & USB touch pad off immediately but the laptop touch pad was still locked. The screen goes black/blank and then it will come back to log in. So it doesn't power off all by itself.