Recently, I bought a 16" portable LCD monitor. It has two USB-C ports and an HDMI port.
It could be used with a single USB-C cable which comes with the monitor. And indeed, it works fine with my MBA 15" with M2 and MBP 16" with M1 Pro. It also works with a Dell laptop.
However, it doesn't work with my new MBP 14" with M4 Max with the same USB-C cable. I even tried a TB4 cable which also works with all the 3 devices I mentioned earlier, but just not the M4 Max.
The symptom was that the monitor would power on, but shortly after, it just shows no signal.
After messing around with various settings in macOS, I thought, perhaps I can power the monitor with a different USB-C cable with a power brick and see if it makes a difference. And wola, the macOS screen shows up immediately.
You may think the monitor may require too much power. But it's not. My USB-C power cable has a power meter and only 9w was used.
What's your thought? Any settings I could change to make the M4 Max work with the monitor without extra power supply?
Please note, I also tried both on battery and on external power with the same result. All other laptops work fine on battery.
It could be used with a single USB-C cable which comes with the monitor. And indeed, it works fine with my MBA 15" with M2 and MBP 16" with M1 Pro. It also works with a Dell laptop.
However, it doesn't work with my new MBP 14" with M4 Max with the same USB-C cable. I even tried a TB4 cable which also works with all the 3 devices I mentioned earlier, but just not the M4 Max.
The symptom was that the monitor would power on, but shortly after, it just shows no signal.
After messing around with various settings in macOS, I thought, perhaps I can power the monitor with a different USB-C cable with a power brick and see if it makes a difference. And wola, the macOS screen shows up immediately.
You may think the monitor may require too much power. But it's not. My USB-C power cable has a power meter and only 9w was used.
What's your thought? Any settings I could change to make the M4 Max work with the monitor without extra power supply?
Please note, I also tried both on battery and on external power with the same result. All other laptops work fine on battery.
