Raspberry Pi dual-display - second screen not working
Updated
In most cases, when you attach a second monitor it will automatically start working and your desktop will display across both screens.
If you have issues with your monitor or TV follow these suggestions:
Does the screen work on its own - Plug the second monitor into the left micro-HDMI port and see if it works on its own as a single monitor. If it does, we know it isn't an issue with the monitor or cable.
Force Dual-screen mode - If you are adventurous, a little tweak of the Raspberry Pi's configuration can help to 'force' the second display to work. Taken from a discussion on the Raspberry Pi forum, try the following fix:
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Open a new terminal window and edit the config file by using the following command:
- sudo nano /boot/config.txt
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Now and add the following lines to the file:
- hdmi_edid_file:1=1
- hdmi_edid_filename:1=edid.dat
- hdmi_force_hotplug:1=1
- Save the file by pressing Ctrl+X then selecting 'Y' to save
Contact Us if you still can not get the second display to work or have other questions.