Extension blocks blank on LG C2

[Sintek]

I was going to remove the 4096x2160 resolutions from my LG C2, but CRU shows there are no extension blocks. I've done this before on this TV and have never had this happen.

I've run reset-all multiple times.

I wonder if it's caused by the latest firmware which was a huge update feature-wise.


All the blocks are blank like this.


Any help appreciated.

In case it helps:
GPU is a 7900XTX on 23.12.1 drivers.
Have clean reinstalled drivers using DDU.
Have tried three different HDMI 2.1 certified cables (no longer than 6ft.).

[ToastyX]

Run this and post the test.txt here: https://www.monitortests.com/EDID-test.zip