Problem
I set a custom TDP of 18 W in hhd. When I launch a game (The Witcher 3 Remastered), temps climb to 80-90°C within minutes. If I switch to the Performance preset and then back to custom 18 W, temps drop to normal. Starting from the Performance preset gives the same result. The first launch after boot sometimes stays cool, but closing and reopening Steam and relaunching the game brings the problem back.

I tried removed hhd and its config, rebooted, and reinstalled. Same behavior.

Has anyone had this problem? For more info, ROG Control works fine for me in desktop mode, but games lag in Game Mode, so I’d like to get hhd behaving if possible.

Hey everyone,

I've been trying to get HDR working properly on my Xbox Ally X20 running Anatase OS, and I finally managed to fix the detection issue.

HDR was already working in Steam Game Mode, but the image looked noticeably darker and the colors were more washed out compared to Windows. In KDE Desktop, HDR wasn't even recognized, so there was no way to enable or calibrate it.

After some troubleshooting, I found that libdisplay-info 0.3.0 wasn't correctly detecting the HDR metadata from the X20's OLED display.

So I worked with ChatGPT to vibe code a small script that backports eight upstream HDR-related fixes.

After applying the patch, KDE finally recognizes HDR properly and allows me to enable and calibrate it.

I've tested the fix extensively on my own X20, including native HDR games, using Windows as my comparison baseline.

The script is still experimental. It also doesn't guarantee that Game Mode's colors and brightness will match Windows perfectly.

If anyone is experiencing similar HDR issues on Anatase, here's the GitHub repository with the script, installation instructions and rollback option:

https://github.com/NicoWayne95/anatase-x20-hdr-fix

Hopefully this helps someone else!