Custom Resolution Utility (CRU)

[ToastyX]

(10-14-2020 07:06 AM)Crysto Wrote:  Hey ToastyX, thanks for CRU I've been using it since back when there was a pixel clock patcher with the overlockable Catleap screens.

I've recently got a Samsung Odyssey G9 monitor (5120x1440@240hz), and unfortunately when running the monitor at 240hz the 'Customize' option in NVCP is greyed out permanently, and what is shown in CRU for the screen makes very little sense. With this display using Display Stream Compression, is there anything CRU can do to add resolution options or adjust the VRR range? It is 'G-Sync Compatible', and many users of both the G7 and G9 have been reporting VRR flickering, but there doesn't seem to be any known fix, nor acknowledgement of the issue by Nvidia or Samsung :/

I've attached what is seen in both the 120hz and 240hz modes.

That monitor probably uses DisplayID at 240 Hz instead of EDID, but there are no DisplayID overrides. CRU can create an EDID override with a DisplayID extension block, but I don't know if that will work.

At 120 Hz, the "Default extension block" is actually a DisplayID extension block, but CRU can't read more than one extension block with NVIDIA because NVIDIA's driver won't provide it for some reason, so if you want to edit it, you'll have to delete the extension block and add 5120x1440 @ 120 Hz back in manually.