Standartmodus

[Marvin5EC9]

Hilfe, wer kann helfen. Wahrscheinlich habe ich nur etwas falsches gedrückt. Ich sehe nur grün im Standartmodus. Wie bekomme ich das weg?

[c.pfaffenbichler]

Does turning on »Deactivate Native Canvas« (Photoshop > Preferences > Technology Previews) and restarting Photoshop have any bearing on the issue? 

Does turning off »Use Graphics Processor« in the Performance Preferences (Photoshop > Preferences > Performance > Graphic Processor Settings) and restarting Photoshop have any bearing on the issue? 

[Francesco Della Peruta]

You can also try to reset preferences:

https://helpx.adobe.com/photoshop/using/preferences.html

Are you using an external monitor? Which GPU?