Network Error; Display Computer : Disappeared

[rstrefford]

Good morning everyone.

 

I am in the process of setting up a large system with 2 producer machines and 6 play back machines.

 

I am currently getting the message shown in the title on an intermittent basis. 

 

First I will give you some info on the spec of the systems:

 

Producer PC Spec:

 

Windows 7 Pro 64bit

Intel Core i7-4770k 3.50 GHz

8GB RAM (Kingston Hyper X DDR3-1600 CL9 2x4GB)

Samsung 120GB SSD for both System and Watchout Producer

ASUS H87M-Pro Motherboard

ASUS NVIDEA GeForce GT640 2GB

 

Display PC Spec:

 

Windows 7 Pro 64bit

Intel Core i7-4770k 3.50 GHz

8GB RAM (Kingston Hyper X DDR3-1600 CL9 2x4GB)

Samsung 120GB SSD for System

Samsung 250GB SSD for Watchout

ASUS Z97M-Plus Motherboard

AMD FirePro W7000 Graphics

 

All PC's have had the 2.1 Watchout tweaks applied (only issue is that Windows won't let me change network connection to a Work network).

 

The intention is that the display PC's can be used for x4 1920x1080 playback of mp4 video.

 

Right now I have internal AMD spoofing applied and am viewing the playback through an SVG Multi-viewer (no physical displays are connected to the DVI cables.

 

What is happening is I get playback of video (20 second loop) for a varying amount of time. After a number of loops (again this varies) the outputs just show black but the playhead is still moving. After a few more seconds I get the message:

 

From Display "Display Number" of Stage Tier "Base" of Stage, Date and Time

Network error; Display Computer: Disappeared.

 

Other times I get the message Display Computer Disconnected.

 

The switch I am using is a HP 2530G 24 Port Switch (I have an unmanaged switch arriving today to test too).

 

Any ideas what is causing this show stopping problem?

 

Is it Network? Media? EDID? Something in Windows?

 

Any help would be greatly appreciated!

 

Many thanks,

 

Rob

[jfk]

Good morning everyone.

 

I am in the process of setting up a large system with 2 producer machines and 6 play back machines.

 

I am currently getting the message shown in the title on an intermittent basis. 

 

It most likely disappeared because it crashed. If the display logo screen appears,

the watchdog has cleared the crash and reloaded watchout display.

Subsequent behavuor depends on mode (production or cluster)

 

First I will give you some info on the spec of the systems:

 

Producer PC Spec:

 

Windows 7 Pro 64bit

Intel Core i7-4770k 3.50 GHz

8GB RAM (Kingston Hyper X DDR3-1600 CL9 2x4GB)

Samsung 120GB SSD for both System and Watchout Producer

ASUS H87M-Pro Motherboard

ASUS NVIDEA GeForce GT640 2GB

 

Display PC Spec:

 

Windows 7 Pro 64bit

Intel Core i7-4770k 3.50 GHz

8GB RAM (Kingston Hyper X DDR3-1600 CL9 2x4GB)

Samsung 120GB SSD for System

Samsung 250GB SSD for Watchout

ASUS Z97M-Plus Motherboard

AMD FirePro W7000 Graphics

 

All PC's have had the 2.1 Watchout tweaks applied (only issue is that Windows won't let me change network connection to a Work network).

 

Delete it and make a new one.

 

The intention is that the display PC's can be used for x4 1920x1080 playback of mp4 video.

 

That sounds really optimistic for that hardware.

Movies are progressive or interlaced? Frame rate matters too.

Encoding will play a role on success.

 

Right now I have internal AMD spoofing applied and am viewing the playback through an SVG Multi-viewer (no physical displays are connected to the DVI cables.

 

If you are not seeing a logo screen the EDID signal may be causing issues.

You would not be the first to experience anomalies with multi-viewers.

Don't trust the synch you see on those things either,

they have been known to insert different delays on different inputs.

 

What is happening is I get playback of video (20 second loop) for a varying amount of time. After a number of loops (again this varies) the outputs just show black but the playhead is still moving. After a few more seconds I get the message:

 

From Display "Display Number" of Stage Tier "Base" of Stage, Date and Time

Network error; Display Computer: Disappeared.

 

Other times I get the message Display Computer Disconnected.

 

OK, what happens on the display after this message is seen?

 

Jim

 

 

 

The switch I am using is a HP 2530G 24 Port Switch (I have an unmanaged switch arriving today to test too).

 

Any ideas what is causing this show stopping problem?

 

Is it Network? Media? EDID? Something in Windows?

 

Any help would be greatly appreciated!

 

Many thanks,

 

Rob

[Jonas Dannert]

 

Right now I have internal AMD spoofing applied and am viewing the playback through an SVG Multi-viewer (no physical displays are connected to the DVI cables.

 

Rob

What is "internal AMD spoofing?

What is an "SVG Multi-viewer?

Why is this used?

 

Try to connect physical Displays to your outputs, same result?

 

/jonas

[jfk]

 

What is "internal AMD spoofing?

 

Since he is using a FirePro, I assume he means the new

EDID management in the Catalyst Control Center.

OP want to clear that up?

 

What is an "SVG Multi-viewer?

 

Sierra Video Group Multi-viewer

 

Why is this used?

 

Like most guys who own them, it allows you to view multiple outputs on a single display.

Often used for in-house testing / production before connecting to the real displays on site.

 

It was other producers with the same idea who discovered 

they are often not valid for synch evaluation. (using FirePro with s400 scanlock)

 

Just the same, that means the graphics card is connected to another processor,

not directly to a display. So for tech check-out, when display signal anomalies occur with such a setup,

it aways makes sense to keep it simple by isolating the problem.

First step in doing so is ... 

 

Try to connect physical Displays to your outputs, same result?
/jonas

 

 

[Jonas Dannert]

:-)

Thanks Jim for the answer, would be nice if Rob could verifiy.

 

But....

1) I view a multiviewer as a physical connection to the graphics card

2) with EDID Managers on every output I would guess there would be no issues.

 

 

/jonas

[sanjaypatel]

i always go through same kind of black screen if the file is mp4 and top of it if it is on loop.

if a file is 10sec first it will play fine then black and again fine.

even mp4 files dose not stop(pause) where you want them to .

 

all i do is convert all files to mpeg so there is no problem in loop nor in pause and not even in audio.

but some time converter can give you bad file!!!!

please check before the show

[Walter]

 

even mp4 files dose not stop(pause) where you want them to

If you ensure that in export setting a keyframe is set to each frame, your mp4 will pause exactly where you want it to! By default, most encoders set a keyframe each 75 frames or so. If you then pause, you will see it jump to the nearest keyframe in the file. (Which you don't want of course).

 

Just a tip.

[DylanAmick]

I am currently having a similar problem with my display computer; while adjusting geometry, I canceled/closed the window to undue some tweeks and upon doing so the display and production programs crashed. I did a full restart and while on of my computers is fine, the other will no go live. It starts up and auto boots into the WO display program, but when I try to go live I get the error "Display disappeared." When this happens the projector shows an error at the display computer, saying that the program is not responding, it sits in that for a few minutes and then goes back to the desktop. And if I try to open the specifics window of that stage, then the production program crashes and I have to restart. 

 

Will my best bet here be reinstalling the watchout software?

 

Thanks,

Dylan

[DylanAmick]

In my case, the problem was actually that the geometry on that particular stage had corrupted. The rest of the file was fine though, so I simply deleted the stage and replaced it with a new one. Then the problem was solved.