Hello, I temporary fix it doing a rollback (downgrade) from 1.4-3 to 1.4-1, I exec this command:
sudo pacman -U /var/cache/pacman/pkg/optimus-manager-1.4-1-any.pkg.tar.zst
And now I have my two monitor working fine :D. I think this solution work temporary while Manjaro Team fix package.
$optimus-manager --status
Optimus Manager (Client) version 1.4
Current GPU mode : nvidia
GPU mode requested for next login : no change
GPU at startup : nvidia
Temporary config path: no
$sudo pacman -Ss optimus-manager
[sudo] password for cybernoob:
community/optimus-manager 1.4-3 [installed: 1.4-1]
Management utility to handle GPU switching for Optimus laptops
$systemctl status optimus-manager
● optimus-manager.service - Optimus Manager Commands Daemon
Loaded: loaded (/usr/lib/systemd/system/optimus-manager.service; enabled; vendor preset: disabled)
Active: active (running) since Sat 2021-12-18 15:56:34 -03; 6min ago
Process: 591 ExecStartPre=/usr/bin/python3 -u -m optimus_manager.hooks.pre_daemon_start (code=exited, status=0/SUCCESS)
Process: 692 ExecStartPre=/usr/bin/python3 -u -m optimus_manager.hooks.pre_xorg_start (code=exited, status=0/SUCCESS)
Main PID: 1255 (python3)
Tasks: 1 (limit: 18496)
Memory: 62.3M
CPU: 2.197s
CGroup: /system.slice/optimus-manager.service
└─1255 /usr/bin/python3 -u -m optimus_manager.daemon
dic 18 15:56:32 tesla python3[692]: [738] INFO: switching=none, nothing to do
dic 18 15:56:32 tesla python3[692]: [786] INFO: Loading module nvidia
dic 18 15:56:32 tesla python3[692]: [1073] INFO: Loading module nvidia_drm
dic 18 15:56:34 tesla python3[692]: [2852] INFO: Writing to /etc/X11/xorg.conf.d/10-optimus-manager.conf
dic 18 15:56:34 tesla python3[692]: [2852] INFO: Writing state {'type': 'pending_post_xorg_start', 'switch_id': '20211218T155631', 'requested_mode': 'nvidia'}
dic 18 15:56:34 tesla python3[692]: [2852] INFO: Xorg pre-start hook completed successfully.
dic 18 15:56:34 tesla systemd[1]: Started Optimus Manager Commands Daemon.
dic 18 15:56:34 tesla python3[1255]: [1] INFO: # Commands daemon
dic 18 15:56:34 tesla python3[1255]: [1] INFO: Opening UNIX socket
dic 18 15:56:34 tesla python3[1255]: [1] INFO: Awaiting commands
I expect this can help you.
Best Regards.