Thanks for the reply
I plugged in one more screen now but the problem is the same.
->about houdini says this in the first section:
Houdini FX Version 16.5.414
Platform: Darwin-17.0.0
Operating System: Mac OS X Version 10.13.3 (Build 17D102)
Qt Version: 5.6.1
Number of Cores: 8
Physical Memory: 16.00 GB
Number of Screens: 3
Screen 0: 1920 x 1200 at 0,0
Work Area 0: 1920 x 1153 at 0,22
Screen 1: 1920 x 1080 at 1920,0
Work Area 1: 1920 x 1080 at 1920,0
Screen 2: 1440 x 900 at 3840,0
Work Area 2: 1440 x 900 at 3840,0
OpenGL Vendor: ATI Technologies Inc.
OpenGL Renderer: AMD Radeon R9 M370X OpenGL Engine
OpenGL Version: 4.1 ATI-1.60.26
OpenGL Shading Language: 4.10
Detected: ATI Consumer (Mac version)
Unknown VRAM
1.60.26.0
It runs on the following machine
https://support.apple.com/kb/SP719?locale=en_US [
support.apple.com]
my resolution on the mac screen is set like this:
the native resolution is 2880-by-1800
many thanks