Output HDMI (external display)

I am trying to configure an external e ink display (dasung paperlike HD).
No plug and play is working as it is considered to be. Here is maybe the issue:
~$ xrandr -q
xrandr: Output HDMI-1 is not disconnected but has no modes
Screen 0: minimum 320 x 200, current 1280 x 480, maximum 4096 x 4096
HDMI-1 connected (normal left inverted right x axis y axis)
DSI-1 connected primary 1280x480+0+0 right (normal left inverted right x axis y axis) 0mm x 0mm
480x1280 60.00*+

Could somebody provide some help?


I’ve had mixed success - depends on the cable - the Micro HDMI is delicate - I have a Micro HDMI to Mini HDMI - gaming flat screen that works well - my full size monitor doesn’t recognize it but I think it is a faulty cable. you also have to ENABLE the devterm to recognize an external monitor when it it plugged in.

How do you enable this?


option is Connecting Displays
turn on Configure new displays when connected…

note I’m having trouble gettting the DevTerm to recognize some displays - natively it appears to prefere

1920 x 1080 resolution - I have other display that keep saying no signal - also the
Micro DVI port is subject to mechanical loading with large long connectors so support your cables.

I’ve since tried multiple monitors with two separate Mini to HDMI cables - I’m convinced it’s monitor resolution issues and not the cable although I’m having some issue with USB and HDMI ports.

I have this setting enabled and I am using a 1920x1080 60hz monitor with no luck. Using this cable: CanaKit Premium Raspberry Pi 4 Micro HDMI Cable - 6 Feet

You’ll need to read this tread for further help…