What resolutions are you running in Linux? I have the monitor in my signature and am running the following...
macOS 3008x1692 @ 100% scaling
macOS Ubuntu VMware 3008x1692 @ 100% scaling
Windows 11 3840x2160 @ 125% scaling
Windows 11 Ubuntu VMware 3840x2160 @ 125% scaling
macOS 3008x1692 @ 100% scaling
macOS Ubuntu VMware 3008x1692 @ 100% scaling
Windows 11 3840x2160 @ 125% scaling
Windows 11 Ubuntu VMware 3840x2160 @ 125% scaling