Hi,
I've received today a MBP 13" with M1, and I've tested it with the 49WL95C-W screen. With the supplied USBC cable, changing the DP version to 1.2 and pressing control key I was able to select the 5120x1440 resolution on the screen, and the images/letters seems sharp, however, I've an issue with the brightness of the screen, that is more noticeable when I'm reading a webpage with white background, when I'm moving up or down, the white goes darker or brighter (like if the screen changes the bright, but is not set for auto brightness.
I've tried with several laptops (Intel 2017 MBP and a HP i5 with Windows), and it happens the same to them, but even more noticeable. This is not happening with a Mac Desktop with a Radeon RX580 connected through Display Port.
When using with the HP or the 2017 MBP I thought it was due to the Intel graphics not being able to handle the resolution, but that should not be a problem with the M1.
Did anyone experimented this issue? I'm still able to return the screen to Amazon, but I'm not sure if is an issue with the screen, the configuration/drivers or the cable...
I've also tried an external USBC multi-adapter, with a DP output, and is not working, it tries a couple of times to show an image, but after that, it just goes dark and the screen says "no input detected".
Regards
Edit: I've found a setting in "General" called "Smart Energy Saving" that was setup to "Low" but seems that was the culprit for my brightness issues... I've disabled it and seems is gone even in the HP Laptop. Quite annoying that even if you setup the auto brightness to off, this setting changes automatically the brightness in such a random way...