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How Would You Troubleshoot Lost Sync?

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Old Aug 14, 2005, 06:52 AM   #1
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How Would You Troubleshoot Lost Sync?
With my new X800 XL AGP card, I've had at least 3 instances where I completely lost video sync. When this happens, I can only press the Reset button on my computer case to restart the computer. It immediately regains video and boots just fine.

One time this happened during a game. The most recent time it happened was during the use of my graphics program (Ulead PhotoImpact 7 w/patches). All I did was attempt to save an image in a PhotoShop image format. (That's one of the options.) As soon as I pressed the Save option, I lost video immediately.

My card's temps are running in the low to mid 40 C range during normal Windows apps, and is getting in the upper 50 C range during 3D games. From everything I've read so far, that's pretty normal with stock cooling and no overclocking.

Mind you, the CPU isn't rebooting or shutting down or anything like that. I'm just losing video sync and the VPU recover doesn't seem to be working, either.

I'm using Omega's latest drivers for CAT 5.7.
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Old Aug 15, 2005, 07:44 PM Threadstarter Thread Starter   #2
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Bump

No one else has this problem, huh?
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Old Aug 15, 2005, 11:29 PM   #3
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What Power Supply are you running?
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Old Aug 15, 2005, 11:52 PM   #4
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As Daedal suggest i would look to power supply first because it is the main source of problem of computer freezing and random reboot.
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Old Aug 16, 2005, 12:36 AM   #5
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does this happen with the regular cats?
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Old Aug 16, 2005, 01:17 AM   #6
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I don't know what's up with the 5.6 and 5.7 drivers but they do seem to be causing a lot of random VPU crashes, during play time, from whats been posted.
I know you said its happened while doing a routine, out of game function, but I'd still suggest dropping to either the Cat5.5 or Omega5.4's, for stabilities sake.
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Old Aug 16, 2005, 05:31 AM Threadstarter Thread Starter   #7
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Well, I'll be.....I thought for sure I'd included the PSU in my sig. That's got to be fixed.

Anyway, I'm using a SOYO 400 W Raptor. This PSU comes with a unit that fits into one of the 5 1/4 inch bays and shows the 3.3 and 5.5. volts on a LED display. The volts for that appear to hold up quite well.

For emphasis, this is not causing my system to shutdown, reboot, or any of that sort of thing. All that's happening is that the video sync is lost. I get a black monitor screen. The only way, so far, to restore it, is to manually reboot my system.

I am using Omega's latest CAT 5.7-based drivers.

One thing I've been really suspicious about since building this system is that the AGP shares an IRQ with the USB 2.0. Since I'm using USB mouse and keyboard, I'm really wondering if there's a glitch in the way this is implimented.

At any rate, you can bet I'll be more than aware of just how the video bus is allocated on my next system.
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Old Aug 16, 2005, 08:08 PM Threadstarter Thread Starter   #8
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This happened once again last night. I was in a game and simply pressed the Screen Capture key and ...... Lost Video Sync.
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Old Aug 16, 2005, 08:13 PM   #9
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Surely that shared IRQ ain't good... Why don't you try a reformat so that the card gets autmoatically assigned since it seems like a software and not hardware problem.
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Old Aug 17, 2005, 04:28 AM Threadstarter Thread Starter   #10
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Surely that shared IRQ ain't good... Why don't you try a reformat so that the card gets autmoatically assigned since it seems like a software and not hardware problem.
I discovered the hard way that this is a hardware problem. Intel hardwired the AGP and the USB 2.0 on the 875 Chipset so that they share the same IRQ. There's nothing I can do about it until I decide to get a new motherboard.

It used to be that the AGP slot shared the IRQ with the first PCI slot next to it. I wish it had always stayed that way. At least then you have the option of not putting anything into that first PCI slot.

I think someone thinks that ACPI is the answer to everything.

EDIT: BTW, my PSU shows 18 A on the 12V rail. I know that higher is better. I also made some changes and put the power plug from the PSU to the Vidcard directly...with nothing else plugged into that one cord. It still lost sync as mentioned above. That's when it happened last night.
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Old Aug 20, 2005, 07:27 AM Threadstarter Thread Starter   #11
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BUMP:

Would anyone suggest that the problem is the card itself? I've had it less than a month and can return it for a full exchange.
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Old Aug 20, 2005, 07:56 AM   #12
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Try if you want but I don't think it will change much,...
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Old Aug 21, 2005, 06:27 AM Threadstarter Thread Starter   #13
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Well, the thing that's bothering me is that I haven't had a video sync loss in so long and I can't nail down just what's causing this now.

What about the voltage? I can up the voltage in .5 increments from 1.45 - 1.65. It's presently at 1.55.
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