No HDMI output signal on AMD/NVIDIA hybrid laptop

So I choose the way from pobrn,

  1. uninstall video-nvidia
  2. install video-hybrid-amd-nvidia-prime
  3. install optimus-manager
  4. install optimus-manager-qt
  5. disable xorg graphic configurations (look at the link to the Guide)
  6. install gdm prime (look at the link to the Guide)
  7. enable gdm systemctl… (look at the link to the Guide)
  8. set Wayland to false (look at the link to the Guide)
  9. control if the systemctl service is running (look at the link to the Guide)
    => systemctl status optimus-manager.service
  10. enable optimus-manager-qt as autostart app

=> So at startup there is the amd gpu choosen.
=> If I want to use a extern monitor or if I need the power of the nvidia gpu I switch via the optimus-manager-qt to the nvidia gpu (after the change to nvidia there is the hybrid icon active. But I checked with << nvidia-smi if the nvidia gpu is active, and thats the case.)

>>> nvidia-smi                                                               
Tue Jan  5 09:36:16 2021       
+-----------------------------------------------------------------------------+
| NVIDIA-SMI 455.45.01    Driver Version: 455.45.01    CUDA Version: 11.1     |
|-------------------------------+----------------------+----------------------+
| GPU  Name        Persistence-M| Bus-Id        Disp.A | Volatile Uncorr. ECC |
| Fan  Temp  Perf  Pwr:Usage/Cap|         Memory-Usage | GPU-Util  Compute M. |
|                               |                      |               MIG M. |
|===============================+======================+======================|
|   0  GeForce GTX 1650    Off  | 00000000:01:00.0 Off |                  N/A |
| N/A   44C    P8     1W /  N/A |    221MiB /  3911MiB |      5%      Default |
|                               |                      |                  N/A |
+-------------------------------+----------------------+----------------------+
                                                                               
+-----------------------------------------------------------------------------+
| Processes:                                                                  |
|  GPU   GI   CI        PID   Type   Process name                  GPU Memory |
|        ID   ID                                                   Usage      |
|=============================================================================|
|    0   N/A  N/A      8902      G   /usr/lib/Xorg                     101MiB |
|    0   N/A  N/A      8978      G   /usr/bin/gnome-shell               24MiB |
|    0   N/A  N/A     11353      G   ...AAAAAAAA== --shared-files       92MiB |
+-----------------------------------------------------------------------------+

1000 thanks to pobrn!