After system update and failed login screen, further reinstallation actions (prehistory: Screen image distortion on resume - #9 by RomanPerekhrest) have lead to losing main screen (laptop monitor) in the list of monitors (xrandr --listmonitors). Only external monitor (HDMI) is active: no image on laptop after unplugging hdmi cable, nor it appears via program switching (Fn + <screen-modes>).
$ xrandr --listmonitors
Monitors: 1
0: +*HDMI-0 1920/598x1080/336+0+0 HDMI-0
$ xrandr --listactivemonitors
Monitors: 1
0: +*HDMI-0 1920/598x1080/336+0+0 HDMI-0
$ inxi -G
Graphics:
Device-1: Intel CoffeeLake-H GT2 [UHD Graphics 630] driver: i915 v: kernel
Device-2: NVIDIA GP106M [GeForce GTX 1060 Mobile] driver: nvidia
v: 510.73.05
Device-3: Realtek Integrated Webcam type: USB driver: uvcvideo
Display: x11 server: X.Org v: 21.1.3 with: Xwayland v: 22.1.1 driver: X:
loaded: nvidia gpu: i915,nvidia,nvidia-nvswitch resolution: 1920x1080~60Hz
OpenGL: renderer: NVIDIA GeForce GTX 1060 with Max-Q Design/PCIe/SSE2
v: 4.6.0 NVIDIA 510.73.05
$ inxi -b
System:
Host: roman-pc Kernel: 5.17.1-3-rt17-MANJARO arch: x86_64 bits: 64
Desktop: KDE Plasma v: 5.24.5 Distro: Manjaro Linux
...
$ mhwd -li
> Installed PCI configs:
--------------------------------------------------------------------------------
NAME VERSION FREEDRIVER TYPE
--------------------------------------------------------------------------------
video-hybrid-intel-nvidia-prime 2021.12.18 false PCI
video-linux 2018.05.04 true PCI
video-modesetting 2020.01.13 true PCI
Warning: No installed USB configs!
$ find /etc/X11/ -name "*.conf"
/etc/X11/xorg.conf.d/90-mhwd.conf
/etc/X11/xorg.conf.d/00-keyboard.conf
/etc/X11/mhwd.d/nvidia.conf
/etc/X11/xorg.conf