I have one screen connected to motherboard HDMI that works fine. I have one HDMI on the 980ti card where the Rift is connected. The Rift is not shown as connected anywhere.
I have tried setting options in xorg.conf to “AllowHMD” “yes” but mostly, this makes the X server not show picture at all whether or not the Rift is connected.
Deleting the xorg.conf makes the xserver work again.
I have also tried to add a section in xorg.conf.d (that was not present before I added it) with device options to allow HMD. The xserver started and worked normally but I could not see the Rift connected.
I have tried swapping the HDMI socket.
This is on Linuc Mint 19, which is Ubuntu 18.04 based.
Thanks for the swift help.
Oculus headset is now tested in a windows computer. It works fine.
allowhmd option added as you suggest and system restarted. No change I can perceive.
I swapped the HDMI outputs for the screed and oculus and screen is now working on the other one so both connectors are working.
To conclude for others what I needed to do to get the Oculus rift cv1 detected:
Cover sensor in headset (there is a small yellow light at the bridge of your nose, the light turns off when something is close to the sensor, i.e it thinks the headset is worn)
Start openhmd_opengl_example
The headset is now seen as detected.
The OS (Mint 19) was not able to activate the display, but this might come later.
It’s kind of a catch 22 that to have the demo running and headset worn to be detected, because the X server needs to restart to activate the screen, and then the demo is not running.
Not sure why. nvidia-settings said so when i tried to apply the changes.
Mint native display settings offered to activate it but just gave an error when I tried.
Giving up the rift now.
I borrowed a Vive instead and it worked out of the box.