Thanks so far! Last two mails collected here. First guess: hardware failure? > Does the display work at startup? Like does it POST and do you have a boot > loader? Not on the external screen. That was what I expected for the UEFI setting “Post on hdmi”. That could lead to failed port? > Do you have another device that you could use to check that the cable and monitor are not the issue? Yes. Tested a TV, and a projector. > What graphics card are you using and > which driver? Whatever is installed by default through pacstrap base > Awhile ago I believe xf86 video intel was deprecated in favor of mode > setting. Thanks for pointing that out. I saw that here: https://wiki.archlinux.org/index.php/Intel_graphics#Installation > Are you using UEFI? Yes. Only. Systems Boot > On Jun 25, 2019, at 20:03, Ralf Mardorf via arch-general <arch-general@xxxxxxxxxxxxx> wrote: > >> 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? Might be. Mesa just got an minor update a few days ago. But I rebooted successfully at least once after updating. > I'm using > Driver "intel" Where can I find this info? > 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? Yes. 2 disconnected HDMI ports shown. One cloned with a DP. —Flo
