Installed with pip, no hassle. But cannot change brightness (can change RGB) of the secondary monitor, Samsung LF27T35, connected by HDMI. Debian 11 on an HP Notebook. Can change brightness of primary display, but have buttons for that already.

[paulspignon]

Describe the bug A clear and concise description of what the bug is. If the contents of the subsections do not apply, simply replace the contents with N/A.

version Please include the version Brightness Controller you are using.

To Reproduce Steps to reproduce the behavior:

1. Go to '...'
2. Click on '....'
3. Scroll down to '....'
4. See error

Expected behavior A clear and concise description of what you expected to happen.

Screenshots If applicable, add screenshots to help explain your problem.

Desktop (please complete the following information):

• OS: [e.g. iOS]
• Browser [e.g. chrome, safari]
• Version [e.g. 22]

Additional context Add any other context about the problem here. Typically, the output of xrandr -q.

[paulspignon]

Oh, suddenly started working, no explanation. I have ddcutil installed, tried to click on Direct Control but it's greyed out. Might that be what did it even so?