Für deinen Radeon-Scaler war ich sehr dankbar, hier ist wohl ein neues Einsatzgebiet.
Wikipedia
"If a computer with a single-link DVI port (such as a Mac laptop with a mini-DVI connector) is connected to the 30-inch display, it will only run at 1280×800, even if the computer is capable of supporting 1920×1200 over a single-link connection."

I’m reviving this thread because I’m currently in a very interesting situation, but I have a lot of doubts.
I have a nice dual-core PowerMac G5 with an ATI x1950 Pro PCIe graphics card that works perfectly with MorphOS, and I now have the opportunity to connect a nice 30" Apple Cinema Display to it as well. this one model https://everymac.com/monitors/apple/studio_cinema/specs/apple_cinema_display_30.html

First off, I’ve used this monitor with many different Mac setups running various versions of MacOS (PowerMac G5 via dual-link DVI, Mac Pro via dual-link DVI, Intel MacBook Pro via a DP to dual link DVI adapter, and recently even with an M4 MacBook Pro via USB-C to DP to dual link DVI) with great satisfaction
Now the display belongs to my daughter and is not in use, but she lives many kilometers away. So before I even think about getting it back to use it with the dual-core PowerMac G5 equipped with a PCIe x1950 Pro graphics card running MorphOS, I wanted to be sure I could use it properly and to its full potential with all video resolutions (not just the native one 2560x1600), especially since I’m particularly interested in playing games on this PowerMac G5 and therefore need to use full-screen resolutions suitable for gaming such as 1600x1200, 1028x1024, 1280x960, 1024x768, 800x600

To provide a few more details, I’d like to point out that the screen resolutions I’ve verified work without any issues on this 30" Apple Cinema Display running the latest versions of Mac OS on a MacBook Pro. They are:
2560x1600
2048x1280
1600x1200
1600x1000
1344x1008
1344x840
1280x960
1280x800
1280x720
1024x768
1024x640
800x600

Now I’d like to ask the experts, especially Frank @cyfm: Has the driver situation changed in MorphOS 3.20? Is it now possible to properly scale to these video resolutions in MorphOS using a 30" Apple Cinema Display via dual link DVI with an ATI x1950 Pro graphics card via dual link DVI, or is this still not possible?
For me, the most important video resolutions besides the native 2560x1600 for using MorphOS are 1600x1200, 1280x960, 1024x768 and 800x600 (and also 1280x1024 if possible), because they’re the most interesting for 3D games
Just today, the very kind Jacek @jacadcaps replied to me as follows https://morph.zone/modules/newbb_plus/viewtopic.php?forum=3&topic_id=14220&post_id=164422&viewmode=flat&sortorder=0&showonepost=1 which raised many doubts in my mind regarding MorphOS’s support for video resolutions lower than the native 2560x1600 (doubts that I already had to some extent and that were partly confirmed by @jacadcaps)
So now I’m asking you what the situation is, partly because if there’s proper support for these video resolutions, I’m willing to travel many kilometers to get one; otherwise, I’ll just let it go and try to use a low-quality consumer monitor
If, on the other hand, video resolution support is only partially complete, but there’s a way online to help developers like Frank @cyfm properly support this 30" Apple Cinema Display model which could also be useful to other MorphOS users who own it or are interested in getting one, I’m willing to travel many kilometers to pick it up.
I look forward to hearing from you.
Thank you all for your attention.

Quote:

No, nothing has changed about the situation as I never got hold of a display like this to at least to do some basic testing with ithis proposed modifications - support of GPU based resolution scaling like done on older RV350/RV370 GPUs for e.g. PowerBook - (which did not happen, either).

@cyfm
thank you for your reply