rockowitz
LG and Black Stabilizer
Not sure whether this is already known but at least for my LG HDR 4K (as reported by ddcutil detect), I observed that the setting called "Black Stabilizer" needs to be verified in a way different from other settings.
More specifically, you need to setvcp a value normalized to the range 0 to 20 (inclusive) and, if successful, you will getvcp the same value multiplied by 5. Example:
$ ddcutil -t setvcp 0xF9 10 && ddcutil -t getvcp VCP F9
VCP F9 CNC x00 xff x00 x32
Values outside of that range seem to have no effect (not exhaustively checked, though).
Curious me would like to know whether this is a vendor-specific quirk regarding VCP F9, and also, whether there are other settings with similar asymmetries (LG-specific or not).
How very interesting!
Can I ask you to add what you find about your monitor to the Wiki page for LG monitors?
Since LG commonly uses generic model names like "HDR 4K" in the EDID model name, use what you know to be actual model name as the section header for model, and note what the ASCII and binary model numbers are.
and note what the ASCII and binary model numbers are.
Do you mean "Product code" by any chance? ddcutil detect -v gives me "Product code" and "Monitor Model Id" (among other information), the latter one essentially combining "Mfg id", "Model" and "Product code". "Serial number" and "Binary serial number" are present but probably not what you mean.
Yes, by binary model number I meant what detect reports as the Product Code.
Am I supposed to close this issue? (I usually leave closing issues to the project owner or whoever the owner has put in charge.)
I usually leave issues open in case the submitter has more to say about my response. Every so often I go through and close issues that are clearly stale. If the submitter regards the issue as complete it's of course appropriate that they close it. No hard and fast rule.