Hi guys

I have a Retina MacBook Pro 2015 13 inch with 2.9GHz i5, with Ventura on it using OCLP.

I have a StarTech DisplayPort to DVI Dual Link Active Adapter (DP2DVID2) which I use with my 2560x1600 Dell monitor that only has a DVI Dual Link input. This adapter works flawlessly with my work laptop, a Lenovo ThinkPad L14 via a HP USB-C dock, but connecting it to my MBP (using another adapter going from Thunderbolt 2 to DisplayPort), the built in display goes blank for a second, and then comes back but there’s no image or activity on my Dell monitor.

If I boot my MBP into Windows 10 via Bootcamp, it works totally fine at full resolution, and the same can be said for a live installer of Linux Mint. Booting into El Capitan, Monterey or Ventura does not seem to detect my monitor.

I’ve got a couple images of System Information in case it helps: one and two.

I actually originally posted this issue to MacRumors but no one replied to me at all, so I’m now trying this Apple community, but if this isn’t the right fit then I apologise in advance and would like to know where I should post this instead.