Seeing red and green dots/pixels flickering in game (not dead pixels)

[TandoorTyrant]

Finally got my Vive unit yesterday and got everything hooked up. Fired up tilt brush and immediately noticed that in just about all the dark spaces I'm seeing red and green flickering pixels or dots. These are not dead pixels, this is in game. I see a lot of them too, not just a few. I double checked my connections and everything looks good. Has anyone else ran into this or know of a solution?

[Omikron81]

Welcome to the screen door effect. totaly normal with this generation of vr hmd's.

[TandoorTyrant]

wait wait wait, I thought screen door effect was just being able to see the pixels? This is red and green flashing pixels in dark areas, same thing?

[Zarnoth]

Typically that is when your video card is too hot or its broken. Could be a display problem as well. Are the pixels all the in the same place or do they change positions depending on what your doing. If they are always in the same place .. i would think it is a headset display issue. If not then your card. You could try to download performance software. There is one called precision x that uses a smaller piece of software to run a test and you can watch the heat go up etc .. you can also have it scan for pixel errors/defects to see if the card is the issue.

[TandoorTyrant]

Originally posted by Peter-N0rth:

Typically that is when your video card is too hot or its broken. Could be a display problem as well. Are the pixels all the in the same place or do they change positions depending on what your doing. If they are always in the same place .. i would think it is a headset display issue. If not then your card. You could try to download performance software. There is one called precision x that uses a smaller piece of software to run a test and you can watch the heat go up etc .. you can also have it scan for pixel errors/defects to see if the card is the issue.

Thanks for the response, If it were the card would I not be seeing the issue in regular games too? Curently I only see the spots in the vive HMD, which leads me to belive it is the HMD or some loose connection, though I have not been able to sort it out. Could be the high temps, but again I would think it would affect all games, not just those displaying in the vive HMD. Will keep digging

[Zarnoth]

It depends on how hard its getting pushed. Which is why there is an artifact scanner. That software is the evga oc scanner x v3. I use either precision x or the asus overclockers to monitor temp etc. you could also just ser your fan speed to max.

[TandoorTyrant]

Originally posted by Peter-N0rth:

It depends on how hard its getting pushed. Which is why there is an artifact scanner. That software is the evga oc scanner x v3. I use either precision x or the asus overclockers to monitor temp etc. you could also just ser your fan speed to max.

Yeah I have precision x, just had not been using it since the resolution was less then 4k, but maybe the double screen is heating it up a bit more than expected. Will give that a try, thanks for your help, much appreciated.

[GARV]

Sounds like what I see on my projector with a long run of lower quality cable. Try a different cable from your pc to the link box, and if that doesn't work maybe you can bypass the video of the link box altogether in case there's an issue there.

You may need an RMA but that could take awhile, so hack it and enjoy :)

[GameMaker]

No its not normal. I have one subpixel on mine that is green in dark scenes.. just one tiny itsy sub pixel.. not visible most of the time just dark scene and I have to focus on finding it. Support is working with me on this. Can you angle you camera in and snap a picture of the issue. its hard to get a focused shot but I managed to do it

[TandoorTyrant]

This was not a 'dead pixel' this was something graphical. As Sir Peter North suggested I setup some better fan speed profiles and also installed some additional 140mm fans and now no more red and green flickering. My card now running temps in teh low 70's and this seems to be good.

[JonJonJP]

BTW, I had a similar issue (strongly flickering red/green dots and horizontal lines at all times, very noticeable and impacting gameplay), and removed one of the HDMI male-female cords I had attached in order to more cleanly run cables across the room. The problem was pretty handily resolved.

[RED-FROG]

@bakeenee
When you do extend the cables, make sure to only use premium cable. And better only extend the short cable before the htc box than extending the HMD cord after the box itself.

[Bitch-Stewie]

I just got my headset a couple of days ago.
Had 2 problems. cracks and pops in the headset audio,
and red/green/blue firing pixels all over, really bad in dark areas.

(using a laptop ,Minidisplay-displayport adapter.)
i bought the most expensive adapter i could find before i got the headset.

just today i got another cheap adapter, and all my problems have vanished.
So.. change your port, or adapter. Worked for me.

Cheerios

[RED-FROG]

Cracks and pops in headset audio is an USB issue.

There are quite a few options
Change the USB port.... change the PCIe USB card... use the Vive breakout box to boost/correct the signal regardless of the headset you are using.

[Daimon]

Red dots are usually interference caused by HDMI cable from my experience. I previously had a cheaper cable that was not well enough protected and it did just that when the cable was close to the power cable.

I also experienced this with Vive (the original). Turned out that the HDMI keeps pushing out from the headset after a while (maybe a few millimeters). Once I pushed it all the way down the problem disappeared. I just stuffed the included audio cable (as I don't have use for) next to the HDMI cable so it won't be able to get loose and that fixed the problem.

I hope this helps.

[Daimon]

oh right, this is why you shouldn't necro threads from 2016. Anyways, I hope someone might find my answer to the topic useful.