Unplug and plugin HDMI in order to activate the Rift?

Steph

Steph
Greetings Commanders,

I wonder if you can help with a problem that I'm having with the Oculus Rift DK2? It works wonderfully well with ED (NVidia 780M for those wondering, I feared that it might not have enough grunt - it *does*, easily enough it appears) - but only if I unplug it from the HDMI socket and plug it back in again.

When I first boot [Windows v8.1] the laptop the Rift's amber light is on and according to the NVidia control panel there is only the laptop display.

Unplug HDMI and replug - et voila - the "ding" of discovered hardware, the Rift light turns blue and we're good to go.

I'm not keen on wearing out the HDMI socket in the months to come so is this something that has been seen before? I tried searching for "unplug HDMI" but didn't find anything specific. Pressing Windows+M didn't help nor did FN+F5 (the Alienware hotkey for graphics cards). Pressing FN+F9 ("HDMI IN") returns message "Please connect HDMI input device".

Apart from this one little niggle all is wonderful, I'd like to fix if I can?
 

M0rdresh

M0rdresh
Maybe this is not directly related to HDMI at all, but more of a (USB) power issue during boot-up as the oculus rift draws it power from a USB port and that - during bootup - can cause issues, especially on laptops as ports are initialised. That would explain for the rift to work properly the second time around as it can draw full power on the USB.

Just a wild guess, but maybe worth to checkout.
TIP1: there is a bios setting on some laptops/computers that allow for full initialisation of USB devices or half, you should go for full and give it a go
TIP2: hookup the power adapter on the DK2, however I'm not 100% sure this will power the Rift entire, I thought it was to power the extra USB port on the rift.
 

Steph

Steph
Thank you - I wondered about BIOS and whatnot so tried a test of switching off the Rift PSU - no difference [no auto-detection at power restoration].

I've had an idea that might help - two small chained HDMI adaptors. I can unplug/replug the connection between the two adaptors as often as I like since I can always buy more of those... :)
 

M0rdresh

M0rdresh
It's not problem solving and more mitigation, but you can buy a cheap HDMI A/B switch, start your computer with A setting (no cable attached) and kick-in the rift by switching to B once fully booted up.
 

Steph

Steph
Hi,

Alas "off then on" also doesn't work. Only "Unplug HDMI and replug" does the trick. I've ordered a couple of adaptors. I read some articles about HDMI switches and it seems as though the Rift is pernickety about them.
 
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