openmohaa/docs/faq.md

Frequently Asked Questions

1. My OpenMoHAA client has crashed, leaving the desktop brightened up. How can I fix this without restarting the computer?

1.1 Lock and Unlock Your Screen (Windows+L)

Simply pressing Win+L to lock your screen and then logging back in can sometimes reset the brightness to its previous state.

1.2. Command Line Fix (Windows)

If you have an NVIDIA or AMD GPU, you can try these commands:

• For NVIDIA GPUs: Open Command Prompt (cmd.exe) or PowerShell and run:

  nvidia-settings -a "DPY-0/RedBrightness=0.0" -a "DPY-0/GreenBrightness=0.0" -a "DPY-0/BlueBrightness=0.0"
  

  (If you have multiple displays, DPY-0 may need to be replaced with the correct display identifier.)

• For AMD GPUs: Open the AMD Radeon Software and manually adjust brightness or SDR settings to reset them.

1.3. Use a Third-Party Tool to Reset Gamma & Brightness

Programs like Gamma Panel or f.lux can help restore modified brightness and gamma settings quickly.

1.4. Restart the Graphics Driver (Windows)

Press Win + Ctrl + Shift + B to restart the graphics driver without rebooting your PC. Your screen will briefly go black, then reset.

1.5. Reset Gamma via Xrandr (Linux, Xorg Users)

If you’re using Linux with Xorg, try this command to reset gamma settings:

xrandr --output eDP-1 --gamma 1:1:1

(Replace eDP-1 with the correct display name, which you can find by running xrandr in the terminal.)

1.6. Changing Display Mode in Windows (Alternative)

If none of the above solutions work, you can manually reset brightness by changing the display mode:

1. Right-click on your desktop and select Display settings.
2. Scroll down to Display resolution and change it to a different setting.
3. Revert it back to your original resolution.

This forces Windows to refresh display settings, which may restore brightness.