Scoop: The beefy brick can charge with the laptop's USB-C or MagSafe ports, pioneering a new high-power charging standard. Tried changing HDMI mode (on both ports) to “Compatibility” mode instead of HDMI 2.1. Apple 16-inch MacBook Pro's 140-watt USB-C charger is its most powerful yet.Tried both manually selecting HDMI inputs using the joystick and using Auto Select.Updated the Spectrum firmware from 102 to 104.Tried turning off HDR in Mac Display properties for the Spectrum.Tried changing the resolution and refresh rate in Mac Display properties multiple times.Tried restarting both the Mac and the monitor multiple times.Used a video-capable USB-C cable from the top of the Mac Pro (bypassing the Radeon card) to (both) USB-C ports on the Spectrum (I know the USB-C port on the bottom of the monitor is the one for video), but I tried both just to make sure. Strangely, the Displays System Preference DOES show the Spectrum plugged in-it shows up in Displays as an Extended Display that I can rearrange or change the settings to-but there is no picture on the monitor itself (I get the “No Signal” message). I even went out and bought two different 8K HDMI cables (from two different manufacturers). The Spectrum will display a signal from the Mac if I use a DisplayPort to DisplayPort cable, so it’s not a problem with the Mac.

None of them will generate a signal from my Mac Pro.

Since my Windows PC is using the DisplayPort, that leaves me with the two HDMI ports or the USB-C port. I’m replacing one of the Dell monitors with the Eve Spectrum.

I previously had three Dell 4K monitors running from the Mac Pro without issue using DisplayPort to MiniDisplayPort cables. The monitor itself works fine when connected to an Xbox via HDMI or a Windows PC via DisplayPort, so it doesn’t seem like a hardware issue. Finally received my Spectrum 4K yesterday, and I’m having a lot of issues getting it to work with my Mac Pro desktop running an AMD Radeon RX 580 (8 GB).

Mac pro usb c