https://bugs.kde.org/show_bug.cgi?id=494804

Fabian Vogt <fab...@ritter-vogt.de> changed:

           What    |Removed                     |Added
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                 CC|                            |fab...@ritter-vogt.de

--- Comment #30 from Fabian Vogt <fab...@ritter-vogt.de> ---
I saw this exactly once on my work laptop, but am unable to reproduce it using
sddm-greeter-qt6 --testing.

The log from comment 26 shows:

Okt 19 17:49:29  sddm-greeter-qt6[850]: Loading
file:///usr/share/sddm/themes/breeze/Main.qml...
Okt 19 17:49:29  sddm-greeter-qt6[850]: libpng warning: iCCP: known incorrect
sRGB profile
Okt 19 17:49:30  sddm-greeter-qt6[850]: Adding view for "eDP1" QRect(0,0
1920x1080)
Okt 19 17:49:30  sddm-greeter-qt6[850]: Loading
file:///usr/share/sddm/themes/breeze/Main.qml...
Okt 19 17:49:30  sddm-greeter-qt6[850]: Adding view for "DP1-2" QRect(0,0
1920x1080)
Okt 19 17:49:30  sddm-greeter-qt6[850]: Message received from daemon:
Capabilities
Okt 19 17:49:30  sddm-greeter-qt6[850]:
file:///usr/share/sddm/themes/breeze/Main.qml:221:25: Unable to assign
[undefined] to bool
Okt 19 17:49:30  sddm-greeter-qt6[850]:
file:///usr/share/sddm/themes/breeze/Main.qml:215:25: Unable to assign
[undefined] to bool
Okt 19 17:49:30  sddm-greeter-qt6[850]:
file:///usr/share/sddm/themes/breeze/Main.qml:209:25: Unable to assign
[undefined] to bool
Okt 19 17:49:30  sddm-greeter-qt6[850]: Message received from daemon: HostName
Okt 19 17:49:32  sddm-greeter-qt6[850]:
file:///usr/share/sddm/themes/breeze/Login.qml:133:13: QML Connections:
Detected function "onLoginFailed" in Connections element. This is probably
intended to be a signal handler but no signal of the target matches the name.
Okt 19 17:49:32  sddm-greeter-qt6[850]: <Unknown File>: Can't assign to
existing role 'icon' of different type [Url -> String]
Okt 19 17:49:32  sddm-greeter-qt6[850]:
file:///usr/share/sddm/themes/breeze/Login.qml:134:17: Unable to assign QString
to QObject*
Okt 19 17:49:32  sddm-greeter-qt6[850]:
file:///usr/share/sddm/themes/breeze/Main.qml:348:25: Unable to assign
[undefined] to bool
Okt 19 17:49:32  sddm-greeter-qt6[850]:
file:///usr/share/sddm/themes/breeze/Main.qml:354:25: Unable to assign
[undefined] to bool
Okt 19 17:49:32  sddm-greeter-qt6[850]:
file:///usr/share/sddm/themes/breeze/Main.qml:360:25: Unable to assign
[undefined] to bool
Okt 19 17:49:50  sddm-greeter-qt6[850]:
file:///usr/share/sddm/themes/breeze/Main.qml:337:17 Parameter "username" is
not declared. Injection of parameters into signal handlers is deprecated. Use
JavaScript functions with formal parameters instead.
Okt 19 17:49:50  sddm-greeter-qt6[850]:
file:///usr/share/sddm/themes/breeze/Main.qml:339: TypeError: Property 'login'
of object Loader is not a function

The "Unable to assign [undefined]" errors can only happen if the "sddm" global
property isn't set properly, which I don't see a way that can happen. They're
also only printed once per occurence, i.e. only for one of the views.

That only the breeze theme is affected by this is also strange, the ones
provided by sddm itself also rely on the context property.

Maybe one of the libraries the breeze theme pulls in breaks the QML engine
somehow?

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