Description:

On multiple monitors seem that only one is active, the others have no input signal from the computer. If the login password box is on a screen that has no signal input the user can not login at all. This issue came with upgrade to version 0.12.0-2

Additional info:
* package version : 0.12.0-2
journcalctl
-- The start-up result is done.
Sep 15 23:08:58 Blank sddm[27215]: Greeter session started successfully
Sep 15 23:08:58 Blank sddm-greeter[27227]: Reading from "/usr/share/xsessions/gnome-classic.desktop"
Sep 15 23:08:58 Blank sddm-greeter[27227]: Reading from "/usr/share/xsessions/gnome.desktop"
Sep 15 23:08:58 Blank sddm-greeter[27227]: Reading from "/usr/share/xsessions/kodi.desktop"
Sep 15 23:08:58 Blank sddm-greeter[27227]: Reading from "/usr/share/xsessions/openbox-kde.desktop"
Sep 15 23:08:58 Blank sddm-greeter[27227]: Reading from "/usr/share/xsessions/openbox.desktop"
Sep 15 23:08:58 Blank sddm-greeter[27227]: Reading from "/usr/share/xsessions/plasma-mediacenter.desktop"
Sep 15 23:08:58 Blank sddm-greeter[27227]: Reading from "/usr/share/xsessions/plasma.desktop"
Sep 15 23:08:58 Blank sddm-greeter[27227]: Reading from "/usr/share/xsessions/xfce.desktop"
Sep 15 23:08:58 Blank sddm-greeter[27227]: Reading from "/usr/share/xsessions/failsafe.desktop"
Sep 15 23:08:58 Blank sddm-greeter[27227]: Reading from "/usr/share/wayland-sessions/gnome-wayland.desktop"
Sep 15 23:08:58 Blank sddm-greeter[27227]: Connected to the daemon.
Sep 15 23:08:58 Blank sddm[27215]: Message received from greeter: Connect
Sep 15 23:08:59 Blank sddm-greeter[27227]: QObject: Cannot create children for a parent that is in a different thread.
(Parent is SDDM::GreeterApp(0x7ffdab0ad790), parent's thread is QThread(0x107f4c0), current thread is QThread(0x130a5e0)
Sep 15 23:08:59 Blank sddm-greeter[27227]: QObject: Cannot create children for a parent that is in a different thread.
(Parent is SDDM::GreeterApp(0x7ffdab0ad790), parent's thread is QThread(0x107f4c0), current thread is QThread(0x130a5e0)
Sep 15 23:08:59 Blank sddm-greeter[27227]: QObject: Cannot create children for a parent that is in a different thread.
(Parent is SDDM::GreeterApp(0x7ffdab0ad790), parent's thread is QThread(0x107f4c0), current thread is QThread(0x130a5e0)
Sep 15 23:08:59 Blank sddm-greeter[27227]: QObject: Cannot create children for a parent that is in a different thread.
(Parent is SDDM::GreeterApp(0x7ffdab0ad790), parent's thread is QThread(0x107f4c0), current thread is QThread(0x130a5e0)
Sep 15 23:08:59 Blank sddm-greeter[27227]: QObject::installEventFilter(): Cannot filter events for objects in a different thread.
Sep 15 23:08:59 Blank sddm-greeter[27227]: QObject: Cannot create children for a parent that is in a different thread.
(Parent is SDDM::GreeterApp(0x7ffdab0ad790), parent's thread is QThread(0x107f4c0), current thread is QThread(0x130a5e0)
Sep 15 23:08:59 Blank sddm-greeter[27227]: QObject::installEventFilter(): Cannot filter events for objects in a different thread.
Sep 15 23:08:59 Blank sddm-greeter[27227]: file:///usr/share/sddm/themes/breeze/components/InfoPane.qml:52:22: Unable to assign [undefined] to int
Sep 15 23:08:59 Blank sddm-greeter[27227]: file:///usr/share/sddm/themes/breeze/components/InfoPane.qml:52:22: Unable to assign [undefined] to int
Sep 15 23:08:59 Blank sddm-greeter[27227]: file:///usr/share/sddm/themes/breeze/components/InfoPane.qml:52:22: Unable to assign [undefined] to int
Sep 15 23:08:59 Blank sddm-greeter[27227]: Message received from daemon: Capabilities
Sep 15 23:08:59 Blank sddm-greeter[27227]: Message received from daemon: HostName
Sep 15 23:09:06 Blank systemd-logind[477]: Removed session c9.


Steps to reproduce:

restart sddm
restart computer.

User experience:

I have 3 monitors, the middle one is the one that contains the password input box and settings, only the left one is active, the middle and right have no signal input making it impossible for me to login.