Broaden 'DisplayPort' -> display-signal (HDMI covered too); add tested-on GPUs note

Author: ScreenSensitive

GITHUB_ABOUT.txt

@@ -2,20 +2,20 @@ Repository name:
   redcontrol
 
 Title (for the README / release):
-  RedControl — Dithering & DisplayPort Signal Control for AMD GPUs on Linux
+  RedControl — Dithering & Display Signal Control for AMD GPUs on Linux
 
 Short description (GitHub "About" box, max ~350 chars):
   GUI for low-level AMD GPU display control on Linux. Toggle spatial/temporal
-  dithering per output, force color truncation, and read/force the DisplayPort
-  stream encoder's pixel encoding & component depth via UMR. For
+  dithering per output, force color truncation, and read/force the display
+  stream encoder's pixel encoding & component depth (DisplayPort + HDMI) via UMR. For
   flicker-sensitive users and display tinkerers. No modeset required.
 
 Topics/tags:
   amd  amdgpu  linux  dithering  displayport  umr  eye-strain  gpu
   display  color-depth  tkinter  dcn
 
 Release title:
-  RedControl v2.1 — DisplayPort Signal Control
+  RedControl v2.2 — Display Signal Control
 
 Release notes summary:
   v2.1 adds a DisplayPort Signal panel (live DP stream-encoder readout and

README.md

@@ -4,14 +4,14 @@
   <img src="redcontrol-icon.png" alt="RedControl Icon" width="128" height="128">
 </p>
 
-**Low-level dithering & DisplayPort signal control for AMD GPUs on Linux**
+**Low-level dithering & display-signal control (DisplayPort + HDMI) for AMD GPUs on Linux**
 
 ![Platform: Linux](https://img.shields.io/badge/platform-Linux-1793D1)
 ![GPU: AMD DCN](https://img.shields.io/badge/GPU-AMD%20DCN-ED1C24)
 ![Python 3](https://img.shields.io/badge/python-3-3776AB)
 ![License: MIT](https://img.shields.io/badge/license-MIT-lightgrey)
 
-RedControl talks directly to the AMD display engine (DCN) through UMR — the User Mode Register debugger — to control things no desktop settings panel exposes: per-pipe spatial/temporal dithering, color truncation, and as of v2.1 the DisplayPort stream encoder itself. Built for flicker-sensitive users, display tinkerers, and anyone who needs to know (and change) exactly what signal their AMD GPU is putting on the wire.
+RedControl talks directly to the AMD display engine (DCN) through UMR — the User Mode Register debugger — to control things no desktop settings panel exposes: per-pipe spatial/temporal dithering, color truncation, and as of v2.1 the display stream encoder itself (DisplayPort and HDMI). Built for flicker-sensitive users, display tinkerers, and anyone who needs to know (and change) exactly what signal their AMD GPU is putting on the wire.
 
 ## Screenshots
 
@@ -53,6 +53,8 @@ All AMD GPUs with a DCN (Display Core Next) display engine:
 - **RDNA 3**: Navi 31, 32, 33 (RX 7000 series)
 - **APUs**: Renoir, Cezanne, Rembrandt, Phoenix (Ryzen 4000–7000 integrated graphics)
 
+> **Tested on:** RX 6600 (RDNA 2) and Radeon 780M (RDNA 3 / Phoenix APU). The other GPUs above share the same DCN display engine and *should* work, but haven't each been individually verified — reports welcome.
+
 ## Requirements
 
 - Linux with the `amdgpu` driver (X11 session recommended; core dithering + DP signal features also work on Wayland)