I'm using a good one.. This one (no issues with windows 11)
I was thinking about trying to change my SMBIOS from iMacPro1,1 to MacPro7,1.. Maybe this can help? :/
(Maybe iMac can't handle two monitors with rx6600xt?)
I tried, no changes.. :/
BUT! This is strange:
I know that something is wrong with hz, because my eyes hurts after 5 minutes with this monitor.. (no problem in windows 11..)
Also, I was able to achieve 144hz with HDMI cable.. so there is some bug with DP :/
I almost gave up on this, but then I saw an old efi backup folder that I made a couple of months ago.. So I decided to try something:
I used Applealc 1.6.6 instead of the last one anddd Everything works now! :)
I'm starting to give up.. everything was working fine before I reinstalled osx...
I tried to insert my old rx 570 , to use a monitor that I had before upgrade... also tried without usb headphone..
tried every possible id, nothing works :/
acording to Dortania, this shouldn't look this way ...
Already tried every id possible... before I did fresh install of WIN11 & Monterey, I was on layout 7 without any problems..
(Reinstalled Realtek drivers on win and was able to see my headphones&mic) but still no 3.5 rear speakers.. :/
I'm using Monterey 12.1 with 2 monitors:
Gigabyte m27q 170Hz and Dell P2418D 60Hz.
I was able to use the first monitor at 170hz with RX570 4GB without any problem, but yesterday I upgraded to Sapphire Pulse RX 6600 XT (with pikera boot args), and now if I choose any refresh rate above...