[arch-general] HDMI Output died over night
Hi! 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. Symptom: The external display detects that an HDMI cable is connected (via ground?) but there is no signal. Here’s what I tried: Switch from wayland to Xorg Swapping cables / monitors Rebooting (with and without hdmi cable or power) Setting the boot display to HDMI (no influence) Looking at xrandr => Not connected Any ideas? Thanks, Flo
Does the display work at startup? Like does it POST and do you have a boot loader? Do you have another device that you could use to check that the cable and monitor are not the issue? What graphics card are you using and which driver? And change to kernel or initrd? Awhile ago I believe xf86 video intel was deprecated in favor of mode setting. Are you using UEFI? There is an IRC channel on freenode btw On Tue, Jun 25, 2019, 4:08 PM Florian Wehner <florian@whnr.de> wrote:
On Tue, 25 Jun 2019 19:07:56 -0400, Florian Wehner wrote:
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.
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
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
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?
Yes. 2 disconnected HDMI ports shown. One cloned with a DP. —Flo
I don’t know why, but it started working today again. To rule out a hardware failiure the BIOS option to use the HDMI as boot display is good. And this morning it just worked again?!?! I guess because I brought tho older brother Lenovo X1…
participants (3)
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Florian Wehner
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Justin Capella
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Ralf Mardorf