#Raspberry Pi w/ latest Raspbian (Raspberry's OS) (which I have connected as a desktop computer) https://www.raspberrypi.org/products/raspberry-pi-4-model-b/specifications/?resellerType=home
#Connection type https://www.amazon.ca/UNSOEN-Adapter-Converter-Portable-Connector/dp/B07XGQBCH5
#Monitor 1 https://www.cnet.com/products/acer-g195w-abd-lcd-monitor-19/
#Monitor 2 https://www.cnet.com/products/acer-x183hb-lcd-monitor-18-5/

The problem:

I am aware that something doesn't seem to like the Native Resolution: 1366 x 768 at 75 Hz for the X183H (Monitor 2). I have not been able to correct the issue of the "Input Not Supported" bouncing around Monitor 2. I can look past this annoying little box and view my second monitor no problem, but was wondering if there might be a way to easily disable this (prob not). Since I do enjoy the current configuration, HDMI-1 1440x900 @59.9hz / HDMI-2 1920x1080 @60hz (and all other currently available options for HDMI-2 cause my screen to look absolutely horrendous because of the 1366x768 issue), further along I have disabled Overscan for the output, so for HDMI-2 the monitor accepts and displays at the above settings but is under the impression it does not.

Attempted Fixes:

sudo nano /boot/config.txt

Locate and edit:

#uncomment to force a specific HDMI mode (this will force VGA)
hdmi_cvt=1360 768 60

Ctrl+x ..Save ../boot/config.txt ..enter

Reboot: but this applies the settings to HDMI-1 when I only want for HDMI-2 (and HDMI-2 remains "broke")

Enabled settings in config.txt.

Enable audio (loads snd_bcm2835)
#Enable DRM VC4 V3D driver on top of the dispmanx display stack
#NOOBS Auto-generated Settings:

Thank you for any insight you might have in reference to my issue.


1 Answer 1


SOLVED : Adding these some lines to /boot/config.txt https://www.raspberrypi.org/documentation/configuration/config-txt/conditional.md

Look for: The


filter which works for Pi 4 only.

Use group=1 (CEA) for televisions or group=2 (DMT) for monitors.

Select mode from list (using the output from a tvservice -v -m DMT command)

#mode 47: 1440x900 @ 60Hz 16:10, clock:106MHz progressive

#mode 85: 1280x720 @ 60Hz 16:9, clock:74MHz progressive

functional although not ideal.

Avoid using 1366x768 as that may not work with your TV or monitor.


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