- MONITORCONTROL NO SUPPORTED DISPLAY FOUND HOW TO
- MONITORCONTROL NO SUPPORTED DISPLAY FOUND INSTALL
- MONITORCONTROL NO SUPPORTED DISPLAY FOUND UPDATE
Values: 00 01 02 03 04 05 (interpretation unavailable)įeature: EE (manufacturer specific feature)įeature: EF (manufacturer specific feature)įeature: F0 (manufacturer specific feature)įeature: F1 (manufacturer specific feature)įeature: F2 (manufacturer specific feature) Values: 00 01 02 03 (interpretation unavailable)įeature: EA (manufacturer specific feature) Values: 00 01 (interpretation unavailable)įeature: E3 (manufacturer specific feature)įeature: E7 (manufacturer specific feature)įeature: E8 (manufacturer specific feature)įeature: E9 (manufacturer specific feature) Values: 01 02 (interpretation unavailable)įeature: E2 (manufacturer specific feature) Values: 0f 10 11 12 (interpretation unavailable)Ġ2: Max image, no aspect ration distortionĠ5: Max vertical image with aspect ratio distortion Values: 00 01 02 (interpretation unavailable)
Values: 50 64 78 8c a0 (interpretation unavailable) In my case, with the BenQ PD3200U, this is what I get: ddcutil capabilities You will be able to see all the features that are being supported in detail. If you get something like this, all is well.
Once you have done all of the above, let’s test if your monitor is supported by ddcutil. # Enable DRM VC4 V3D driver on top of the dispmanx display stack Remove the “f” of “fkms” in both “pi4” and “all” like this: It assumes that you have selected “6 Advanced Options > A2 GL Driver > Choose G2 GL Fake KMS” in the sudo raspi-config settings.Īnd scroll down to the bottom section commencing with “pi4”. The last step is to make a change to your Pi configuration file.
MONITORCONTROL NO SUPPORTED DISPLAY FOUND INSTALL
Then install ddcutil by typing sudo apt install ddcutil
MONITORCONTROL NO SUPPORTED DISPLAY FOUND UPDATE
If you haven’t updated your system for a while, first run sudo apt update & sudo apt upgrade -y In the following, I will describe how it worked using a BenQ PD3200U monitor, a 32-inches 4K resolution display that I used for my latest digital picture frame project. But for most of us with a standard computer monitor, it should be fine. So if you just butchered your old laptop display, ddcutil won’t work. There are a few restrictions like that ddcutil does not support laptop displays, which are controlled using a special API, not I2C. Given the number of monitor models in the market, lacking a universal standard, this is no wonder. I haven’t found that claim to be 100% true, but I was happy to discover that “almost” all hardware controls can now be soft-controlled. Normally, the video driver for the monitor exposes the I2C channel as devices named /dev/i2c-n.” Generally speaking, any setting that can be changed by pressing buttons on the monitor can be modified by ddcutil.ĭdcutil primarily uses DDC/CI (Display Data Channel Command Interface) to communicate with monitors implementing MCCS (Monitor Control Command Set) over I2C. “ ddcutil is a Linux program for managing monitor settings, such as brightness, color levels, and input source. Now that ddcutil has been brought to the Raspberry Pi 4 with the firmware 5.10 supporting HDMI I2C, that is possible. Or you may want to have some brightness automation running which dims your screen in the evening. When you tightly integrate your bare computer display into a nicely built picture frame you sometimes can’t access the monitor controls easily.
MONITORCONTROL NO SUPPORTED DISPLAY FOUND HOW TO
I often get the question how to control the display of your Raspberry Pi 4 through software.
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