AMD GPU incompatibility with dummy mirroring - crashing issues and not scaling

[pavs94]

I've been trying to get BetterDisplay to run for a couple hours now but it consistently crashing /spinning and not responding.

I tried uninstalling, restarting, re-installing, updating and all the standard processes

The process I'm currently getting issues are as follows:

• Connect Macbook pro 16 inch 2019 to display

• Display 27 inch 2560x 1440 - LG Ultragear 27gl850

• Open Better Display

• Create a new Dummy Display

• Set BetterDummy as the mirror of the main display.

• Screen blinks about 5 times

• then BetterDisplay on the top menu starts spinning

• Activities -> Kill Better Display

• Open Better Display again -> Screen blinks 2-3 times, better display starts spinning, cannot use it after first installation.

• Checking Logs, they have the following:

invalid display identifier <private>
 HALC_IOContext_PauseIO(654)
HALC_ProxyIOContext::PauseIO
0 0 id:654 called from <private>

[waydabber]

Hi @pavs94 - unfortunately virtual display mirroring generally does not work at all on Intel Macs with discrete (AMD) video cards. This is stated in the compatibility section. Really sorry about that!