Enable-HiDPI-OSX
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syscl
1920x1080 HiDPi can't work @60hz?
Hey, bro, thx for the patch. Nice work! Just one question: Is there any way to drive 1920x1080 HiDPi at 60hz?
Looking forward to your reply. Thx!!
@syscl I did some research, it seems that mac os x has some restriction on refresh rate... The main problem for me here is the mouse delay and lagging problem at 30hz.
@yuanshq well, there indeed has 4K limitation in macOS. So, attach your configuration especially graphics card, monitor and etc...
There's some ways to patch the IOKit to release the resolution limitation, but still you cannot reach 4K @60Hz due to the operation system.
syscl
Hey, @syscl , thx for your reply! FYI, Graphics Card: AMD Radeon R9 M370X: Chipset Model: AMD Radeon R9 M370X Type: GPU Bus: PCIe PCIe Lane Width: x8 VRAM (Total): 2048 MB Vendor: ATI (0x1002) Device ID: 0x6821 Revision ID: 0x0083 ROM Revision: 113-C5670E-777 gMux Version: 4.0.20 [3.2.8] EFI Driver Version: 01.00.777 Displays: Color LCD: Display Type: Retina LCD Resolution: 2880 x 1800 Retina Retina: Yes Pixel Depth: 32-Bit Color (ARGB8888) Main Display: Yes Mirror: Off Online: Yes Built-In: Yes LG Ultra HD: Resolution: 1920 x 1080 @ 30 Hz Pixel Depth: 32-Bit Color (ARGB8888) Mirror: Off Online: Yes Rotation: Supported Television: Yes
Monitor:
Actually, my monitor is 3840x2160, I have no idea why it shows 7680x4320.
In case you want more info about my monitor, LG 27UD88-W: Screen Size Class (diagonal): 27" Class (27" diagonal) Panel Type: IPS Color Gamut (CIE1931): SRGB 99% Color Depth (Number of Colors): 10bit (8bit + A-FRC) Pixel Pitch (mm): 0.1554mm x 0.1554mm Response Time: 5ms GTG Refresh Rate: 60Hz Aspect Ratio: 16:9 Resolution: 3840 x 2160 Brightness (cd/m2): 350 cd/m2 Contrast Ratio: 5M:1 Viewing Angle: 178 / 178
@syscl I'm not clear, does it actually mean that driving 1920x1080 HiDPi is same as driving 3840x2160 in non-HiDPI mode? If so, HDMI indeed doesn't support refresh rate at 60Hz. Maybe MiniDP will work that out?
@yuanshq First, you should inject 1920x1080, and I will see your information later since I have due tonight.
I will reply you later.
syscl
@syscl I am using DP, instead of HTML. Problem perfectly solved. Thank u so much, bro!
Best, yuanshq
@yuanshq Do you mean that my script works under DP?
Yes, dp under macOS support 4K @60Hz
syscl
Hi, I am using MacMini Late 2012, and also using 4K monitor from LG 27UK600, cable that use is Mini DisplayPort to DisplayPort with Gold Plate. the mac mini can hit 4K but only 30hz and also 1920x1080 HiDPI but 30hz, how can change to 60hz. and I am using MacOS Sierra 10.13.4
