I am a new Mac User, just switched to Windows after using it for all my life basically. I bought the latest MacBook Pro 15 fully specced out with the Vega Pro 20 as well.
I updated to Catalina from day one and I couldn't for the life of me figure what's causing this issue, basically, if I changed the scaling from the default to let's say 1440x900 which looks best on my screen due to the 2:1 ratio scaling, everything works fine until I reboot then as the boot loading bar reaches 70%, the screen just goes black and I'd have to force shutdown the laptop anywhere between 1 to 10 times until it finally boots. I formatted many times but no luck. so I downgraded to Mojave for a while and that issue was gone. see the details here:
Downgraded to Mojave, best thing I ever did!
Contacted Apple Support about this but they were of no help but I did leave feedback on the Apple Feedback site regarding the issue and provided them with logs.
It seems like I was the only guy along with 1 more member on this forum with my exact same laptop specs who had this issue. I think there was no proper support for the Vega Pro 20 or something because others who only have an integrated graphics or other Vega Pro models had no issues.
I just upgraded to Catalina 10.15.1, changed the DPI scaling to what I like (1440x900) and rebooted a few times and it worked!! Finally I can enjoy my laptop the way it was meant to be. That was the only issue I was facing with Catalina I had non of the sync issues and whatnot that others were complaining about perhaps because I did a clean install of the previous supplemental update along with a clean install of iOS 13.1.3 on my iPhone 11 Pro.
I updated to Catalina from day one and I couldn't for the life of me figure what's causing this issue, basically, if I changed the scaling from the default to let's say 1440x900 which looks best on my screen due to the 2:1 ratio scaling, everything works fine until I reboot then as the boot loading bar reaches 70%, the screen just goes black and I'd have to force shutdown the laptop anywhere between 1 to 10 times until it finally boots. I formatted many times but no luck. so I downgraded to Mojave for a while and that issue was gone. see the details here:
Downgraded to Mojave, best thing I ever did!
Contacted Apple Support about this but they were of no help but I did leave feedback on the Apple Feedback site regarding the issue and provided them with logs.
It seems like I was the only guy along with 1 more member on this forum with my exact same laptop specs who had this issue. I think there was no proper support for the Vega Pro 20 or something because others who only have an integrated graphics or other Vega Pro models had no issues.
I just upgraded to Catalina 10.15.1, changed the DPI scaling to what I like (1440x900) and rebooted a few times and it worked!! Finally I can enjoy my laptop the way it was meant to be. That was the only issue I was facing with Catalina I had non of the sync issues and whatnot that others were complaining about perhaps because I did a clean install of the previous supplemental update along with a clean install of iOS 13.1.3 on my iPhone 11 Pro.
