Search Issue Tracker

Fixed in 2018.1



Found in


Issue ID




[OSX] [Multidisplay] 2nd screen is not shown when scene is built as 64bit or Universal

Window management


To reproduce:
1. Open project
2. Build and run scene for x86 version
3. Repeat 2nd step with x86_64 or Universal build target architecture

Expected: 2 screens with toggle will be visible both times
Actual: 2nd screen is shown only when scene is built for x86

Reproduced on: any 2017.1, 2017.2 and 2017.3(since 2017.3 only 64bit architecture available)
Not reproducible: 5.5.0f3, 5.5.4p1, 5.6.0a3

Regression introduced in 5.6.0a3- 5.6.0a6

Tested on: OSX 10.12 and 10.13

Comments (10)

  1. Dbbe8ed1fc12a26292e5da7448c58733?d=mm


    Nov 01, 2019 13:43

    Hello this is still happening on OSX for me - 2019.2.11f1

  2. E86f68715ef8b3165c4dcc57924dbcf7?d=mm


    Oct 03, 2019 21:55

    This is marked resolved, should I make a new report for this bug? I am using unity 2019.2.7 and OSX 10.14.6. External displays are detected but do not activate.

  3. 2982999bb76e47855e78da06b06ea404?d=mm


    Apr 03, 2019 23:40

    Having this issue with 2018.3.5f1. Works fine on Windows, doesn't work on Mac.

  4. 867d497bf8b7e121fee325caef3f91a2?d=mm


    Mar 28, 2019 19:32

    Still experiencing in 2018.3.9

  5. 6c715467a60e2eddf60b3379e0bb0a91?d=mm


    Mar 12, 2019 21:25

    This is not fixed. Currently happening on Unity 2018.3.6f1

    It only works on MacBook using Yosemite (an OS with over 6 years...)

    Changing to OpenGL does not currently fix this issue.

  6. 371d438acabfbd196e7b71423c20c639?d=mm


    Nov 12, 2018 14:28

    Still happening in 2018.2.14f1

    But I can reconfirm Thorikawa's comment - If you switch graphics API to OpenGL core, it works.

  7. 1fb297059a78434294338d4ffcce309a?d=mm


    Sep 28, 2018 20:45

    still happening in 2018.2.10f1

  8. 5540de4e574de15e478355539416939b?d=mm


    Jun 24, 2018 14:45

    Still experiencing this issue in 2018.1.6f1

  9. Bf4ef03d51107cf4cfa0c5146503b387?d=mm


    Jan 31, 2018 10:03

    It still happens on OSX Unity 2018.1.0b4 with Metal graphics api. If I switched graphics api to OpenGL core, it works.

  10. 9e475fb53d76e5ce96662a48198eefbb?d=mm


    Jan 12, 2018 07:07

    Any idea if Unity plans to fix multi-display functionality on macOS in 2018 maybe? Fairly sure it was broken for macOS 64-bit builds for most, if not all, of 2017. =(

Add comment

Log in to post comment

All about bugs

View bugs we have successfully reproduced, and vote for the bugs you want to see fixed most urgently.