22.04 on Dell Precision 3561 never suspends, power hungry when on battery

[ubst]

Ive tried many approaches to tame the power hunger of the current system, and landing here again, I would appreciate of any help how to tackle the issue, that battery drain is not to be stopped when unplugged. Is it connected with the hardware I have, which is probably never thought to be used with LInux ?

$ cat /var/log/gpu-manager.log...
Intel IGP detected
NVIDIA hybrid system
Creating /usr/share/X11/xorg.conf.d/11-nvidia-prime.conf

$ sudo find / -name NVIDIA-Linux-*
~/Downloads/NVIDIA-Linux-x86_64-525.85.05.run

From https://ubuntuhandbook.org/index.php...-ubuntu-20-04/

$sudo gedit /etc/systemd/logind.conf
#HandlePowerKey=poweroff
HandleSuspendKey=suspend
HandleHibernateKey=hibernate
HandleLidSwitch=lock
HandleLidSwitchExternalPower=suspend
HandleLidSwitchDocked=suspend
#HandleRebootKey=reboot

After closing the lid it contiunes to work. It (almost- so seldom, they I cannot draw a pattern) never suspends.

$ gsettings get org.gnome.settings-daemon.plugins.power lid-close-ac-action
'suspend'
$ gsettings get org.gnome.settings-daemon.plugins.power lid-close-battery-action
'suspend'
$ grep 'model name' /proc/cpuinfo | head -n1
model name : 11th Gen Intel(R) Core(TM) i7-11850H @ 2.50GHz
$ uname -r
6.8.0-45-generic
$ lsb_release -d
Description: Ubuntu 22.04.5 LTS