edit: it started to work again after I pulled out the DP-to-mini DP cable then pushed it back in, plus quit and restarted the compositor.exe process which was stuck. I still don't know what the problem is, and how to quickly fix it next time
Any ideas before I knock myself out?
My vive headset - which was working - has stopped. And I have a second one as well to try, so I know it isn't the headset.
What now happens is when I start steamVR or a game, or anything, I get the red LED on the headset and no video signal. Everything shows normally on the desktop - all green, all tracking.
When I start a game, with 'display mirror' on, the game initial frame shows then it shows a red not responsive. Still no signal in the headset.
I've tried
- power cycle (of course)
- remove and reinstall all USB devices
- a different headset (*) see below
- different USB ports
This happened before and after futzing around it just sort of fixed itself. I don't know what I did to get it working again.
While showing it today, the audio in job simulator stopped working, so I tried restarting steamVR and restarting the PC then I got to where I am.
Note the second headset I just tried is fresh out of the box. It showed no video signal too, but it showed a GREEN led. So then I updated its firmware, because it wanted to, now it behaves identically to the first headset.
I've no clue what is going wrong.
And as an aside, the whole mess of settings USB drivers and so on fucking sucks and is built on a hill of sand. All those warnings about unplugging, waiting 5 seconds, replugging, removing drivers, re-installing drivers, rebooting and power cycling. Ignoring things and not screwing around with other peripherals during firmware updates they signal to me that the whole software infrastructure is shit. But anyway, I'm ok with ignoring all that if it worked reliably.
USB device manager doesn't show any bad devices. There are no errors to chase. Just no video in the headset. Between it working, and not working, there was no physical issue like a pulled cable or anything physical that might explain why it works then it doesn't work.
The PC is a fresh HP Envy with fresh windows 10, nothing much is on it just steam and VR stuff. It doesn't show any instability outside VR in terms of desktop game glitches, heat, or hanging.
From this post
https://www.reddit.com/r/Vive/comments/4duqqg/red_hmd_light_upon_starting_steamvr_screen_stays/
suggests faulty 980ti could be the cause.
The headset link box is display port, to mini-dp. The TV is HDMI out.
but. If its a faulty 980ti it seems strange that it would be influenced by a reboot, and did it already then "fixed" itself.