FIX - Error: Shared IPC Compositor Connect Failed (306) - Fix & Cause Found

[PEAKHOE [DeanMoore]]

Hi guys,

I came across the Compositor error (306) and was incredibly frustrated- until I started fooling around, and realized that mine was caused by having too many display devices connected to my PC.

I currently run a 3x 1440p setup and a 4k TV screen connected to my pc - and adding the 5th screen device (the Vive) was simply too much, causing the 306 error to occur.

So the solution to the problem was simple; bring the amount of total devices down to 4 (including The Vive) - unless it was a screen resolution estate thing, but I find that less likely.

[--ranXerox--]

yeah i gave up my 3x 65 inch 1080p myself. I set those up on various rooms with kodi for television and home videos. I use 1x 43 inch 4k as my main desktop pc with a vive.

thanks for this info!

[ATwig]

+1 for this solution.

I was running 1x 1440p, 2x 1080p and 1x TV (1080p).

When the Vive first showed up i didn't have an extra displayport cable so I had to unplug my TV to use the HDMI slot (Bringing the total to 4 devices including the Vive). Worked great.

Just got the displayport cable and adding the Vive caused me a 306. Rebooted, Reinstalled Vive Drivers, Re installed nVidia drivers, rolled back nVidia drivers etc etc.

Finally found your comment and just disabled my TV in the control panel and everything works flawlessly.

Thanks man!

[Mitch]

I have this problem but I just have one monitor.

[SoapyButtCrack]

Originally posted by MitchDaGamer:

I have this problem but I just have one monitor.

Same! I only have one monitor! I just bought this yesterday and am super eager to play it. Please help!

[Pollicino]

Originally posted by SoapyButtCrack:

Originally posted by MitchDaGamer:

I have this problem but I just have one monitor.

Same! I only have one monitor! I just bought this yesterday and am super eager to play it. Please help!

Same here, with Windows 10, Nvidia GTX 1070

[Alien Identity]

Originally posted by fpbas:

Originally posted by SoapyButtCrack:

Same! I only have one monitor! I just bought this yesterday and am super eager to play it. Please help!

Same here, with Windows 10, Nvidia GTX 1070

Be sure to have Monitor and HMD both plugged into the Video Card...... not one plugged into the motherboard graphics.

For laptops, set Prefered Graphics Processor to Nvidia High Performance....... in Nvidia Control Panel \ Manage 3D Settings...... under SteamVR in the programs list.

[GoodOnSometimes]

Thanks guy, I have similar setup and this was my issue. Recently added a projector and had completely over looked this possibility. Really wanted to play some Onward yesterday. +1

[Tiny Tony]

I had a vive and my monitor connected for some time and it randomly came up when I tried to start payday 2 in vr post release.

[WHITE EYES]

i currently run three 1080 monitor and one crappy one for things like discord. tried starting up my vive again after some time not using it. had this 306 error come up, did like you did, reinstalled everything, tried different drivers and whatnot. but now i tried what you did, i disabled my fourth monitor (the crappy one) in hopes of it fixing it, and even tried disabling all but one of my 1080 screens to no prevail, is there something i'm missing?

[lll]

I had this error and my issue was due to my EVGA GTX 1080 FTW having the limitation of four monitors despite it having input for 5.

[Toxicface]

Here is what works for me : delete steamvr.vrsettings file in the steam/config folders.
Delete and reinstall steam vr and Bingo !
Tried everyting other cable bla bla bla this is the things who work for me

[Jeo Nugu]

None of this ♥♥♥♥♥♥♥ ♥♥♥♥ worked for me.

[🇯🇴🇸🇭_6499🗡]

-1 I only have the monitor and the Odyssey+ plugged in.

[Andrew_WOT1]

Opt out of beta. That fixes everything.

[Jeo Nugu]

Okay, so my situation with this has finally been resolved, but just opting out of beta by itself did not work. I did a lot of unplugging, replugging, rebooting, updating video drivers, blah blah... the usual suspects.

At one point, I did opt out of the beta for SteamVR, going back to 1.1.4... but the error remained.

I even uninstalled and reinstalled SteamVR, and left it in the 1.1.4 (non-beta) version and STILL the error remained!

I then opted IN to the beta again, and sure enough, still had the error... but when I opted OUT of the beta a second time, ONLY THEN did the error finally go away and SteamVR started successfully!

So, it was like just installing and staying in 1.1.4 by itself wasn't good enough. I had to opt IN, and then back OUT to fix it. No idea why, but at least it's working now.