The kernel parameters are gone, they’re just in an old logfile. Please
- switch to nvidia (again): sudo prime-select nvidia
- delete /lib/udev/rules.d/50-pm-nvidia.rules
- remove stray blacklist files (sudo rm /lib/modprobe.d/blacklist-nvidia.conf /etc/modprobe.d/blacklist-nvidia.conf)
- update the initrd (sudo update-initramfs -u)
- reboot
If this doesn’t resolve the issue, please create a new nvidia-bug-report.log.