MP 1,1-5,1 Incompatibility: iDisplay app + Radeon Pro WX4100

[JayKay514]

Hey all, just a heads-up:

I recently sold my Mac Pro 5,1, which was upgraded to Mojave with an AMD Radeon Pro WX4100 (quad mini display port, 4x 4K) video card. As one of the sticky threads notes, this card doesn't show the Mac boot screen but works fine, as its GPU family is supported.

The person who bought it from me installed some third-party software called iDisplay which provides that "use your iPad as a second monitor" function. However, it must operate by hijacking the video drivers, and it resulted in a totally black screen. He reinstalled Mojave and it went back to working fine -- so just a warning to anyone thinking of using these in combination, it won't work.

 

[tsialex]

Hey all, just a heads-up:

I recently sold my Mac Pro 5,1, which was upgraded to Mojave with an AMD Radeon Pro WX4100 (quad mini display port, 4x 4K) video card. As one of the sticky threads notes, this card doesn't show the Mac boot screen but works fine, as its GPU family is supported.

The person who bought it from me installed some third-party software called iDisplay which provides that "use your iPad as a second monitor" function. However, it must operate by hijacking the video drivers, and it resulted in a totally black screen. He reinstalled Mojave and it went back to working fine -- so just a warning to anyone thinking of using these in combination, it won't work.

Sorry, but this is old news as Mojave, AirDisplay was probably the first or one of the first reported problems that was found with Mojave upgrades. It's on the notes of the Mojave upgrade sticky thread:

MP5,1: What you have to do to upgrade to Mojave (BootROM upgrade instructions thread)

Please fully read this first post, you will probably find that you have one or more problems described into the various notes below. Mojave will only install if you have upgraded your BootROM to the current release and your Mac Pro have a Metal capable GPU*. If you are trying to install Mojave...

forums.macrumors.com

MP5,1: What you have to do to upgrade to Mojave (BootROM upgrade instructions thread)

UPDATE: SOLVED - SOLVED - SOLVED Sapphire Nitro+ RX580 now working perfectly. SOLUTION: The issue was caused by two extensions by (Identified Developer) Avatron Software which made a product called AirDisplay that I once used to allow my my iPad to be used as a second screen. I removed...

forums.macrumors.com