Completely disable logging outputs on screen

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Hi, I want to disable the ROS logging in the console completely, but still have the logging to the /rosout topic. I tried these two options:

1. Set output="log" in the launch file. This disables the output of Debug, Info and Warning messages but still, Error and Fatal messages are shown in the console.
2. Set the logger level to Fatal but this completely disables the /rosout topic, too.

Are there any other possibilities I could try out?

Thanks!