Can't use USB-C dongle HDMI and internal HDMI ports simultaneously

valnoxy / t480-oc

💻 Lenovo ThinkPad T480 / T580 / X280 Hackintosh (macOS Monterey 12.x - Sequoia 15.x) - OpenCore

MIT License

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Can't use USB-C dongle HDMI and internal HDMI ports simultaneously #143

Open marcoslor opened 9 months ago

marcoslor commented 9 months ago

I can either use one or another, not the two at the same time.

Did anyone encounter this problem?

rotkiW285 commented 9 months ago

I have X280 and in manual We could read that

"Do not connect external displays to the USB-C connector and the HDMI connector at the same time. Otherwise, only the external display connected to the USB-C connector I will work by default."

From what I've looked, there is no way to use 2 external monitors like this

marcoslor commented 8 months ago

I have 2 others T480 with W11, and I have no problems connecting two monitors like this.

Miliardi commented 6 months ago

Does 2K and 4K resolutions work over HDMI? And over USB-C?

I could not manage to make it work yet.