Custom Resolution Utility (CRU)

[kaleb418]

(08-17-2022 08:06 PM)ToastyX Wrote:  

(08-16-2022 06:03 PM)kaleb418 Wrote:  Native laptop resolution is 3072x1920, native monitor resolution is 5120x2880. Tried to use any lower 16:9 resolution, tried 2560×1440 and 1920x1080. GPU is AMD Radeon Pro 5500M 4GB. I attached screenshots of what I see when I open CRU (as you can see, there are 3 detailed resolution entries by default). After running restart64.exe, the list of available modes does not update, as seen in the screenshot. Let me know if I'm doing something wrong, thanks.

It's not normal to have only one resolution in the "List All Modes" list. Normally there are additional GPU-scaled resolutions even if the monitor doesn't define them. Adding resolutions with CRU will not do anything if it won't even list the resolutions that are already defined by the monitor. Either something is wrong with the graphics driver, or the driver is intentionally limiting the list of resolutions for some reason.

I think there is more than the 5500M. Is this a MacBook Pro? If so, it also has an integrated Intel GPU. Usually the Intel GPU handles the display output on laptops with switchable graphics. Adding to the complexity is the Apple display uses Thunderbolt, which is separate from the GPU. Do you see one or two active displays in the CRU display list? If two, then it's also using multi-stream transport, which is like having two displays internally that the GPU has to combine into one.

The drivers for the Thunderbolt controller, the Intel GPU, and the AMD GPU all need to be installed and work together to make this configuration work. This might be limiting the options available if the drivers don't completely support this configuration.

Yes, I did think it was weird that only one resolution is offered. I just double checked my AMD, Intel, and Thunderbolt drivers, and all seem to be in good working order and updated.

I'm using a 2019 16" MBP with the studio display, and two active displays show up in CRU. Both displays are definitely only using the AMD GPU even though the integrated GPU is available.