- Joined
- Apr 15, 2018
- Messages
- 7
- Motherboard
- T440P
- CPU
- i7-4712MQ
- Graphics
- Intel Haswell
I need a little help. I have a fresh 10.13.4 install on an MSI B250M Gaming Pro Motherboard, Core i3 7100, MSI Radeon RX560 4MB, 8GB Ram, Acer XR382CQK 21:9 monitor 3840x1600 @75hz hooked up via DisplayPort, 8,2 SMBIOS showing as an iMac Retina 4k, 21.5-inch 2017. Everything worked out of the box with the GPU being recognized appropriately. However I was getting the black screen after the apple logo so I used an old 4:3 DVI monitor connected to the GPU with a low resolution to finish up the install. For some reason that old monitor worked using DVI and I could get to the desktop. Once I installed Lilu and WhateverGreen, I reconnected my Acer 21:9 monitor via Display Port and it finally worked and bypassed the black screen.
The problem is it is stuck at 3840x1600 @30hz. Ive tried everything and can't seem to get the Display Pref panel to allow higher refresh rate. Oddly, during the boot up process the monitor is running at 75hz (there is an OSD that shows frame rate on the monitor). Once it gets past the Apple boot logo however, the screen goes black for a second, and then comes back to the desktop but at 30hz again. Ive tried ScreenResX and a few other tweaks but I can't get it. Any help would be appreciated. I don't have any graphics injected, Intel is off in bios, not using RadeonDeint, not using InjectATI, or anything. Just Lilu and WhateverGreen Kexts. 60hz would be enough for me but since the monitor does 75hz that would be better. I had this same hardware setup running windows and it ran flawlessly at 75hz with DisplayPort so I am confident that it is not a hardware issue.
The problem is it is stuck at 3840x1600 @30hz. Ive tried everything and can't seem to get the Display Pref panel to allow higher refresh rate. Oddly, during the boot up process the monitor is running at 75hz (there is an OSD that shows frame rate on the monitor). Once it gets past the Apple boot logo however, the screen goes black for a second, and then comes back to the desktop but at 30hz again. Ive tried ScreenResX and a few other tweaks but I can't get it. Any help would be appreciated. I don't have any graphics injected, Intel is off in bios, not using RadeonDeint, not using InjectATI, or anything. Just Lilu and WhateverGreen Kexts. 60hz would be enough for me but since the monitor does 75hz that would be better. I had this same hardware setup running windows and it ran flawlessly at 75hz with DisplayPort so I am confident that it is not a hardware issue.
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