I have more information. As per the suggestion of mooff <moo...@proton.me>, I noticed
qobi@sapiencia>ls -l /etc/modprobe.d/nvidia-options.conf lrwxrwxrwx 1 root root 45 Sep 7 2022 /etc/modprobe.d/nvidia-options.conf -> /etc/alternatives/nvidia--nvidia-options.conf qobi@sapiencia>ls -l /etc/alternatives/nvidia--nvidia-options.conf lrwxrwxrwx 1 root root 49 Sep 7 2022 /etc/alternatives/nvidia--nvidia-options.conf -> /etc/nvidia/nvidia-525.105.17/nvidia-options.conf So I moved /etc/nvidia/nvidia-525.105.17/nvidia-options.conf to /etc/nvidia/nvidia-525.105.17/nvidia-options.conf.orig and edited /etc/nvidia/nvidia-525.105.17/nvidia-options.conf to add options nvidia-current NVreg_PreserveVideoMemoryAllocations=1 This prevented the machine from properly suspending/hibernating in the first place. I know this because the Lenovo P71 has a red LED on the lid that is on when the machine is running and pulsates when it is in suspend/hibernation. Before I made the change it would pulsate when the lid was closed. But after I made the change, th LED would stay on. But when I would open the lid the screen would show the pasword request, and the mouse would work, but the keyboard would no longer work. I would need to power cycle. Searching the web, I found https://unix.stackexchange.com/questions/743506/pop-os-22-04-with-nvidia-driver-525-fails-to-suspend-on-a-hybrid-laptop So I tried changing /etc/nvidia/nvidia-525.105.17/nvidia-options.conf to instead add options nvidia-current NVreg_PreserveVideoMemoryAllocations=1 NVreg_TemporaryFilePath=/var/tmp I also did sudo update-initramfs -u But I observed the same behaviour where the LED would stay on when closing the lid and the keyboard wouldn't work when opening the lid. So I backed out the change and am back in a state where it appears to suspend/hibernate (because the LED pulsates) but 30% of the time it properly resumes and 70% of the time it does not (the disk light flashes a few times, the screen is blank, and no response when using the keyboard or mouse. I dont know if I should try putting it in /etc/modprobe.d/nvidia-power-management.conf instead. I haven't tried that yet. Jeff (http: //engineering.purdue.edu/~qobi)
