2 of 3 Thunderbolt ports does not detect external monitor on 2025 MacBook Pro 14"

kay-ronnie wrote:

2 of 3 thunderbolt ports does not detect external monitor on 2025 macbook pro 14".

I've brought the issue to apple shop and they replaced with a brand new mbp but the issue is the exact same.

Only 1 of the 3 ports works - the left sided one that is closest to the trackpad.

I hope a software fix can fix this - this is not acceptable.

Been using macbooks for almost 20 years - have not had an issue before

[Re-Titled by Moderator]

You may well have bought it 2025, however there is no 2025 MBP to describe your exact Mac

in an effort to drill down on the Technical details of your exact machine...would be helpful.

from the >hold the Option key>System Information>Hardware

or >About this Mac for year

The Mac does not rely on windows-like side-loaded "Drivers" which are actually packages of resolutions and settings for a specific display. Instead, it goes straight to the immutable source -- it asks the display itself.

To get a Mac display to become active, you need the Mac to query the display, and the display to answer with its name and capabilities. Otherwise, the display will not be shown as present, and no data will be sent to the display. "No signal detected" is generated by the DISPLAY, not by the Mac.

This query is only sent at certain times:

• at startup

• at wake from sleep — so momentarily sleeping and waking your Mac may work

• at insertion of the Mac-end of the display-cable, provided everything on that cable is ready-to-go

• hold the Option key while you click on the (Detect Display) button that will appear in Displays preferences (from another display)

so try doing some of those things and see if the display comes alive.