VY229Q reset brightness after restart and turn off/turn on

[ihazcat]

I'm using one of my machines with the mentioned monitor. It is a dual boot system. Running Windows 11 Pro and Ubuntu 24.04. Both systems handle well the monitor. But no matter how many times I set the brightness via the system it always resets to 65% brightness on restarts.  The machine has several connectors and I have several cables. Also tested with other machines. Tested in all possible combinations, but the result is always the same.

[Aureliannn_ASUS]

Hi @ihazcat ,

We would like to confirm the following points:

1. Did this issue occur right from the beginning when you started using the monitor?
2. Have you tried restoring the monitor to its factory settings and then checking again?
3. We suggest connecting your device to a single monitor first and checking if the issue still persists.

We greatly appreciate your understanding and cooperation.

Thank you.

[ihazcat]

1. Yes, from the beginning.
2. Done already.
3. The monitor is connected in many ways and tested with many machines.

So it is not connecting simultaneously to more than one machine. Looks like the monitors firmware overwrites or just not storing the brightness after restarts. It should store the last state even if it set through the OS. But it changes back to the "standard" 65%.

[Aureliannn_ASUS]

Hi @ihazcat ,

Thank you for your inquiry.

We understand that you are experiencing the issue of the display's brightness setting automatically reverting to 65% after each restart or power-on. 

To better understand this issue, we recommend that you send your display to an official service center for detailed inspection by our professional engineers.

You can find the nearest service center location through the following link: Official Support | ASUS Global

If you have any questions before sending for repair, or if you need any other assistance, please feel free to contact us.

Thank you.

[ihazcat]

Are you entirely sure that sending it into service make sense? If I set the brightness on the monitor itself (for example to 0) it will revert 0 on every restarts. Are there ANY settings or presets can prevent or block by default if I modify the setting on OS level? I mean is looks like it can store the settings without any issues. But maybe the OS controls differently the monitor or something like that.