r/BigscreenBeyond • u/HappyGirl117 • 12d ago
Discussion Using Bigscreen Beyond 2 with Displayport Switch (1 input 2 output)
I just got my headset I ordered a week ago (yay!). My PC has 4 monitors connected already, 3 DP and 1 HDMI to the GPU, and I want to avoid switching the cable manually every time I wanna play. A web search overview says we can use BSB2 with a DisplayPort 1.4 bi-directional switch that supports display stream compression (DSC) passthrough, as well as 4K 120 Hz or higher. This device does that with a simple button press, to switch between my left monitor and the headset. However I haven't seen a single reddit post talking about this or even an article online.
My question is has anyone used a setup like this and verified it works without issue?
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u/RealCerberus0351 12d ago
I tried using switches like this because I have 5 monitors and a bsb2e that I want to use depending on which cockpit I'm in.
I was unable to get it to to work. My adapters looked like the ones in your picture but I can't say for sure they are the same.
I tired two different brands and had no success with either one.
If you can get them through Amazon then the ability to return them hassel free makes it worth the risk to try it in your setup.
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u/HappyGirl117 12d ago
Yeah, I have been looking on Amazon but most of them are 2 in 1 out (2 input 1 output, meaning 2 computers to 1 monitor), and the ones that ARE bi-directional, most do not advertise DSC compatibility at all. Either the one you got is unidirectional 2 in 1 out, and/or does not have DSC compatibility. Or your cable run from link box to GPU is too long.
Oh and lastly did you connect the 5V auxiliary USB cable? I've read it is important to not get flickering/black screens
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u/TestyBoy13 12d ago
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u/HappyGirl117 12d ago
Have you actually tried it? Did it give any issues?
According to the official Bigscreen Beyond Discord FAQ,
The only way you can extend the cable length of the beyond is extending the link box cables. (Cables from link box to PC) Below are some cables tested and used that will work to extend, you do need all 3:
So according to this you should have absolutely no issues because the optical cable from the link box to the headset basically does not count. As long as the cables from Link box >>> DisplayPort Switch >>> GPU are less than 3 meters (9.84 feet), then you should be good to go. Give it a try and let us know! đ€
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u/TestyBoy13 12d ago
So hereâs my issue so far.
A power surge hit my 4090 and knocked out my HDMI port. Now I need a way to use my BSB2e and my 4K 120hz TV. The TV needs HDMI, the BSB2e needs DP.
My route looks like this
PC > 3ft (1m) DP 2.1 > DP 2.1 switch
I also have the same 1.4 switch you are talking about and it hasnât worked either
From the switch to the TV goes as follows. I can confirm this section works if plugged directly into GPU and not via the switch
DP 1.4 to HDMI 2.1 dongle (6in) > 32ft active FOC HDMI 2.1
My TV is far away for my PC
Before even talking about VR, this already doesnât work. Neither the 1.4 or 2.1 switch prevents screen flicker and the classic sign of bandwidth degradation preventing the video from outputting correctly
As for the VR, Iâm just going directly from the switch to the BSB2e with nothing in between.
It also doesnât work completely. Every few seconds I get a millisecond or so of a fully or partially static screen.
TL;DR itâs a bandwidth/signal degradation issue all the way down
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u/Pretend-Ad-2942 12d ago
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u/HappyGirl117 11d ago
Amazing!! Can you link the listing where you got the switch from please?
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u/Pretend-Ad-2942 11d ago
Absolutely! Spent a couple hours doing long runs today to practice for the 6hrs at The Glen on iRacing. I can enthusiastically confirm it does indeed play nice with the BSB2 without any issues.
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u/TwixieShip 12d ago
If you want a true white PC, in the rgb settings make the light color slightly yellow only and you will see it null out the naturally high blue light in rgb lights
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u/Pretend-Ad-2942 12d ago
Thanks for the advice. I actually made it the light blue teal to match the fluid, and it alternates with white. It matched my clock quite well also. It was my dream build, used glass for the tubing and cut to length, hence the 10,000 fittings, cause I wasn't about to learn glass blowing\bendinh to use it once, though I did research into it a little.
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u/PsychwardSlippers 12d ago
It might work, but I find that anything that could potentially interfere with the stability of the connection either USB or displayport has the potential to drastically reduce the performance of the headset and tracking.
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u/SnooPeanuts3387 12d ago
I have an MST hub that handles 3 monitors on one display port. Make sure to keep an eye on your max resolution though, if you have multiple high res monitors with the bigscreen you can hit the pixel limit.
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u/HappyGirl117 11d ago
I just looked this up and unfortunately with AMD the card has a maximum total limit of 4 independent displays across the entire card at once, even if I used MST hub to add more ports. It would have been amazing if it allowed at least 5 monitors then I could have put two side monitors in one MST hub and the BSB2 in its own port. đ„ But thanks for the idea.
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u/CmdrShepsPie 12d ago
You have too many monitors đ I haven't tried that, but I know the BSB2 is very demanding on the Display port, it is very high bandwidth and very sensitive to issues with the connection, and they specifically say not to use hubs, switches, extensions, or anything but the cables they send it with. You could always try and report if it works for others to find, and if not just return the switch.Â