Logging out in nvidia mode in KDE + SDDM yields black screen after 1.3 update

Describe the bug As the title, logging out while in nvidia mode in KDE + SDDM will yield a black screen. Ctrl + Alt + Fx works fine when the screen turned black, but attempting to restart SDDM will always yield a black screen.

System info

• Your distribution: Arch Linux
• Your desktop manager: KDE Plasma
• You display manager (SDDM, GDM, LightDM…): SDDM
• The version of optimus-manager you are using: stable release (optimus-manager 1.3 on AUR).
• Your custom optimus-manager configuration file at /etc/optimus-manager/optimus-manager.conf:

[intel]
DRI=3
accel=
driver=modesetting
modeset=yes
tearfree=yes

[nvidia]
DPI=
PAT=yes
modeset=yes
options=

[optimus]
auto_logout=no
switching=bbswitch
pci_power_control=no
pci_remove=no
pci_reset=no
startup_mode=auto
startup_auto_battery_mode=intel
startup_auto_extpower_mode=nvidia

Additional information: I have checked through all of the logs (optimus-manager logs from the folder and from journalctl, SDDM’s journalctl’s log, kernel log, Xorg’s log, etc.) and nothing seems to be out of order (SDDM reports that the greeter started normally, optimus-manager didn’t pick up the logout).

However, I have tried the following combinations and all of them worked well:

• Logging out from intel mode.
• Switching from intel to nvidia and vice versa.
• Switching from intel to intel.
• Switching from nvidia to nvidia.

EDIT: This is not the case when using version 1.2.2.

[Askannz]

@Hyper-KVM was 100% right about the cause, there was an issue with the state logic causing Prime screen offloading to not be set up again after a logout.

Should be fixed in -git now, let me know how that goes.

[Ann1kaB]

The reason why this is happening is because the post_xorg_start hook only runs if switching GPUs or after pre_daemon_start hook.