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Switching VGA cable on the run

post #1 of 9
Thread Starter 
Hey everyone! I have kinda strange issue and hope to find some help here.

I have an Xbox360 next to my PC (the audio from the console is running through my soundcard's line-in and I'm sharing internet with a network bridge) and I'm using a VGA cable to connect the Xbox360 to my PC monitor (an old LG Flatron L194WS). For almost 3 years, every time I want to play on the Xbox, I unplug the PC VGA cable from the back of my monitor, while the PC is running and connec the Xbox's VGA cable. When I'm done playing, I just switch the cables and continue using my PC as normal.

The problem is this: On my old GTX 460 (now I'm with GTX 760, with the same DVI-I to VGA convertor I've used for ages) using any driver newer then 314.22 I may or may not get a BSOD when unpluging or pluging the VGA cable in the back of the monitor (the other end of the cable is attached to said convertor and is never removed from the video card's DVI-I port).
Few days ago I got a shiny new Gigabyte GTX 760 Windforce 3 rev2.0, installed the latest 327.23 drivers and everything was fine until just now, when I finished an hour play session on my xbox and upon pluging back the PC's VGA cable to the monitor my back ground music (coming from the pc, while I was playing) stopped and after few seconds of black screen, the PC restarted and booted normaly to Windows 7 x64 and I was presented with a report of a BSOD 116:
Quote:
Problem signature:
Problem Event Name: BlueScreen
OS Version: 6.1.7601.2.1.0.256.48
Locale ID: 1026

Additional information about the problem:
BCCode: 116
BCP1: FFFFFA8006835010
BCP2: FFFFF88005190F50
BCP3: FFFFFFFFC000009A
BCP4: 0000000000000004
OS Version: 6_1_7601
Service Pack: 1_0
Product: 256_1

From my understanding the BSOD116 is a stop code, which is caused by timed out request to "restart/wake-up" the video card. Going a bit deeper, I noticed that the PC will not POST if I turn it on with the VGA cable unpluged. It's like the 760 will not initialize if there is no monitor connected to it.

Any software/driver tips to go around this problem? Or should I just go and trick it by setting the "Turn off monitor" to "never" so it doesn't let the video card "go to sleep"? Or turning off "PCIe Link State Power Management" may help as well? Any help and advices are appreciated!
Thank you!
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post #2 of 9
Not sure if I could help on the issue but have you thought about buying a splitter like this http://www.amazon.com/Cable-Matters-Monitor-Splitter-Foot/dp/B005H3I38G to stop from making the switch over, take that issue of the equation of possibly having a grounding issue on the switchover?
    
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post #3 of 9
A splitter is going to send that signal down both cables at the same time. You need to control what device sends the signal down the cable. What you need is a signal switch.

You plug the sources (Xbox and PC) into the box and the box into your output (the monitor) and whenever you want to switch video sources, just push the button. Oh, you will have to buy an extra VGA cable to connect one of your sources, but you can probably find one for a minimal expense.

OK, I missed that last part. Is the computer coming out of suspend or hibernation mode when the error occurs?

The switch will take the nuisance out of connecting and reconnecting cables, but we might have to look deeper to find out what causes the error. Also, constantly disconnecting and reconnecting cables will wear out the contacts eventually.
Edited by Pakeo - 9/24/13 at 12:50pm
post #4 of 9
Thread Starter 
I'm not sure how this same splitter will help in my situation, because it's "from one source to two monitors", and in my case it's "from two sources to one monitor".
To answer your question, I've tried a "switch box" similar to this:
http://www.amazon.com/Ports-VGA-Switch-Selector-Monitor/dp/B003DTZQFY
The problem with such low-cost devices is that they are not isolated, which results in heavy noise and really, really bad image quality.
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swnny's rig
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post #5 of 9
As expected, not all switches are created equally. You'll need to look into attenuation and SNR (signal to noise ratio) if you're going to go this route, it seems.
post #6 of 9
Thread Starter 
Yes, that's why I'm looking for a more easy solution. ^^ Hand switching the cables isn't the problem... it's that bsod/crash that's giving me troubles.
Thanks for the advices, tho! Keep them comming. biggrin.gif
swnny's rig
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swnny's rig
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post #7 of 9
The stop error you gave has this description
Quote:
Attempt to reset the display driver and recover from timeout failed.

So your PC is awake when this happens right? Because you said in your original post that you had music playing on it. Perhaps you can try plugging it in without the monitor on? Maybe you can use an older driver? The newest one might have a problem with disconnecting and reconnecting inputs on the fly. You'll have to make sure you don't run into problems in programs and games if you're going to use an older driver though. Most should work however. Maybe also check to see that there isn't already another driver update that might resolve this.
post #8 of 9
Thread Starter 
Yes, my PC was awake and it has to be, because the xbox360 audio and internet are going through the PC. I guess that's what happened: while I was playing, the PC "turned off" the monitor after 15mins of inactivity, witch causes the video card to go in "sleep mode". Then, before me connecting the monitor to the pc, pushing the mouse, which should instantly wake the video card and "turn on" the monitor, but because I didn't connected the monitor yet, the video card recover times out and bsod occurs.
Question is, can I somehow disable this sleep/low-power-state and driver recovery?
swnny's rig
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CPUMotherboardGraphicsRAM
AMD FX-8320 ASUS M5A99X EVO Rev 2.0 Gigabyte GTX 760 Windforce 3 Rev 2.0 A-DATA DDR3 2 x 4GB kit 
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Cooler Master 212 EVO Windows 7 x64 Seasonic G Series 650w Fractal Design Core 3000 
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swnny's rig
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CPUMotherboardGraphicsRAM
AMD FX-8320 ASUS M5A99X EVO Rev 2.0 Gigabyte GTX 760 Windforce 3 Rev 2.0 A-DATA DDR3 2 x 4GB kit 
CoolingOSPowerCase
Cooler Master 212 EVO Windows 7 x64 Seasonic G Series 650w Fractal Design Core 3000 
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post #9 of 9
I guess the only way to do that is to set your monitor to never sleep. I never heard of it putting the video card to sleep though, would make sense. Have you experimented with hooking the monitor up before waking the video? I would try that first. If that doesn't work, I still think you should see if there's a driver update, and if not or it doesn't work, try older drivers.
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