On Tue, 25 Jun 2019 19:07:56 -0400, Florian Wehner wrote: >I wasn’t able to get my HDMI output running on my Lenovo X1 Carbon 6th >gen today. I run gnome on Wayland. It has been working fine for the >last few days but completely dead today. Did an update affect anything? I'm using Driver "intel" However, the "Multihead" Wiki, https://wiki.archlinux.org/index.php/Multihead, refers to "Related articles" for non-Intel. >Symptom: The external display detects that an HDMI cable is connected >(via ground?) but there is no signal. Maybe no signal, but perhaps just +5 V, https://en.wikipedia.org/wiki/HDMI. >Here’s what I tried: >Switch from wayland to Xorg >[snip] >Looking at xrandr => Not connected But xrandr shows one or more disconnected HDMI ports? $ xrandr | grep -i hdmi HDMI1 disconnected primary (normal left inverted right x axis y axis) HDMI2 connected 1920x1080+0+0 (normal left inverted right x axis y axis) 530mm x 300mm