I upgraded this old MacBook 7,2 to 22.04LTS and it doesn't Suspend or wake, requiring Power button hard boot. It also randomly freezes and again requires hard boot. I've seen some mention online, of a possible connection to the Nvidia chip and a driver update that's in 22.04. Maybe also a newer update of Linux kernel and/or Nvidia driver that fixes it.
Suspend just blacks the screen but the fans keep running so there's clearly no sleep and no change with any keystroke or key combinations (e.g. Ctrl-Alt-F1/2 suggested by some). It's oddly working so far in this session of 10 minutes or so, having repeatedly frozen after a minute or two yesterday, so maybe there's some specific input that triggers the freeze/blackout. When it freezes during a session, the screen stays on and mouse moves but it's unresponsive.
After one of the hard reboots I got the UbuMate "Send Report" and did it, but no idea where that went. Maybe there are specific instructions somewhere on how to access the system and/or crash logs if that could help. Any suggestions or ideas much appreciated, including how to revert to 22.04 (did a Timeshift backup before Upgrade).
System: MacBook7,2 ~
22.04.1 LTS ~ 5.15.0-47-generic x86_64 ~ MATE 1.26.0 ~
Intel® Core™2 Duo CPU P8600 @ 2.40GHz × 2 ~
NVAF (Nvidia GPU which some say is the root of all evil)