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raspberrypi / linux

Kernel source tree for Raspberry Pi-provided kernel builds. Issues unrelated to the linux kernel should be posted on the community forum at https://forums.raspberrypi.com/
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Since rpi4 comes with 2 HDMI outputs then Raspberry Pi OS should by default support dual monitors #4586

Open mgrouch opened 2 years ago

mgrouch commented 2 years ago

Since rpi4 comes with 2 HDMI outputs then Raspberry Pi OS should by default support dual monitors

even in cases of different resolution and one being touch and another is not.

Each monitor should get its own workspace on GUI desktop by default.

User should be asked which one is left and which one is right for proper mouse carry over.

Thanks, --MG

6by9 commented 2 years ago

It does support dual monitors for extended desktop by default. Use the Screen Configuration application from the Preferences menu to configure your screen layout as you wish.

mgrouch commented 2 years ago

Touch part doesn't work for me. It gets misaligned and not usable.

6by9 commented 2 years ago

Input and display are two different subsystems. There is no way to automatically tie a USB input device to any particular HDMI output.

xinput --list will list the input devices on your system. xinput --map-to-output <input device> HDMI-1 will map the specified input device to cover the area of the desktop served by HDMI-1. Likewise for HDMI-2.