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Intel DG35EC Video Problem

Posted on 2008-06-13
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  This one is tough. Yesterday I got in my first batch of Intel DG35EC motherboards. In all very nice until I loaded XP. The problem has to have something to do with the refresh rate on the on-board video adapter. I am using the HD-15 Analog. Not the DVI-D. Edges of radio buttons flicker, the address bar in IE 6 has flickering lines through it, nothing real sever but very noticeable. Even when installing XP it gets to the point where the GUI takes over and everything is flickering.

   I have called Intel and they are absolutely no help. I asked them about the problem with some PATA DVD/CD Rom drives with this board and they didn't even acknowledge it existed even though it is plastered all over the internet.

   I have cracked open 3 of these motherboards and the all do the same thing. Its predecessor, the DG33BU, works just fine. Same case, memory, hard drive, CD-ROM and monitor. No flicker. Intel ain't talking but it can't be just me.

   Has anyone else experienced this priblem with the DG35RC mobo? Anyone want to take a shot at a BIOS setting that could correct the problem?

Thanks!
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Question by:jimbecher
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Did you update the BIOS to the most current one before you did the install?   The 072 BIOS was only released a few weeks ago ... so may not have already been installed on the board.

Do you have a monitor that accepts DVI input?   It would be good to know if the same problem is evident with that output.  

Your comment that "... it gets to the point where the GUI takes over and everything is flickering. " implies that it's stable until that point => is that true?   If so, it certainly seems like a driver issue --> have you installed the Intel graphics driver & looked at the available settings in it to perhaps change the refresh rate?
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Hi Gary. Sorry it took so long to get back to you. I have been experimenting with them. They all had the lastest BIOS. Unfortunately I don't have a monitor with DVI. I will be getting one soon. I does appear to be some type of driver or refresh issue. I installed fresh XP with all the latest drivers from Intel. All these boards are doing it. I can't believe it is just me. I can turn right around and slip in a DG33BU and it is flawless. Exact same computer with the exception of the motherboard. I think (as always) Intel might know of the issue they just aren't admitting to it. I'll let you know what I find ...
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I'm particularly interested as I WAS planning to order one of these boards (it was in fact in my "cart" at Newegg when you posted this question ... but I'm holding off for now) ... they seem almost ideal for an HTPC.   A related question ... the board has (according to the Intel site) an optical SPDIF header on the board; but as near as I can tell it's very close to the card slots.   Is this likely to be "in the way" of a board installed next to it?   Also, do you happen to know of a source for a rear panel bracket that would bring that SPDIF connection "out" for use externally?
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Wow. That SPDIF connector is smack between the case and the PCI slot. I have a Resdon 7000 in the PCI slot (and the second monitor is perfect on it) and the SPDIF is pretty much in accessable. It is a 3-pin in-line. Vcc, SPDIF Out and ground. The only thing I have been able to find is

http://www.cablestogo.com/product.asp?cat%5fid=909&sku=07090

Doesn't use the groung?
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That's an internal cable.  I'm looking for something to bring the optical signal "out" to the back => this would probably do it; but it's a lot of overkill [only the optical port would be used], and is a bit pricey for what it does.  http://www.vidabox.com/shop/index.php?main_page=product_info&products_id=9

Do you think the header on the motherboard will keep a card from being used in that slot IF the connections to the header are made before the card is inserted?
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It shouldn't but it is iffy. The heat sink on the R7000 card sits right over the SPDIF connector but as long as the header on the SPDIF cable is an inch or shorter you should be fine ...
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I can't for the life of me figure out why they didn't include an SPDIF output on the rear panel !!  (or provide a HDMI output like the Asus G35 board)

Other than the video issue (clearly a killer), are you otherwise happy with the board?
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  Yes. I am still using one for my computer. Works really well. Intel, on occassion, does some stupid stuff. Kind of like you mentioned. This board comes with a SPDIF header and a serial port header. They could have put both on the I/O bracket or provided adapters to take them to the back of the case but decided to make life a little rough on everyone.
   I use to push ASUS and AOPEN but it got to the point where Intel made the chipset, on-board LAN and processor so .. what the heck and I switched to Intel about 6 years ago. Very please with their quality. Never looked back. I think, like Microsoft operating systems, I jumped on this board a little early. I should have at least waited until service pack 1 came out :) I'm sure an updated driver or BIOS will take care of the problem sooner or later. Other then that the board works like a champ ...
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I'm also a big Intel fan => their boards are generally rock-solid, reliable boards; and I'm not an overclocker, so I don't need the fancy additional features others like to add in.   Intel chipset; Intel board; Intel CPU makes a very nice, reliable system :-)

I agree with the header issue though => if they're not going to put the ports on the ATX backplane; they could at least stick a 50 cent I/O bracket in the box so you could use them if you needed them.   I recently built my wife a new PC with a G33 board and needed a serial port --> the board has one on a header; but it was a PAIN to find a bracket for it (finally did).
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Hi Gary. Just an FYI. I picked up a DVI monitor yesterday and it is as clear and sharp as anything I have ever seen. Must me something going on the the analog port. Oh well ... I'm sure they will get it resolved sooner or later ...
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Thanks for the feedback ... I feel better about my choice of that board now.   I still haven't ordered my new HTPC "stuff" due to delays in the Hauppauge tuner card I plan to use with it (2250).   It was originally supposed to ship in Feb; then delayed to June; now expected in "mid-to-late July" :-)   No need to build a system that'll sit around for a few weeks waiting the final parts !!

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Hey Gary. FYI it took long enough but Intel finally came clean. There is a problem. The board revision must be 205. Nothing lower. If your still looking good luck!
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Thanks for the update ... I do still plan to use that board => but Hauppauge still isn't shipping the 2250's [Basically two 1800's on a single card] ... so I'm still in "holding" mode :-)    But when I do order (should be soon) I'll be sure and check the board revision !!

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Hi Gary,

   Stay as far away from this board as you can! I finally got some rev 205 boards in. Initially it looked god. The analog monitors looked great. The I put a 6' shieled extension on it and ITS BACK ... problem also happens with an A-B switch. What ever they fixed they did it half-assed. I have a feeling we are looking at another camino-gate. I'm sending them all back and sticking with the DG33BUC until the 43 or 45 chipset comes out. OMG what a mess!
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Well, Hauppauge delayed long enough with their dual-tuner board (2250) that Intel's now shipping the G45 uATX boards, so I can skip the G35 generation :-)    The first of the DG45ID's were delivered in the past few days ... several HTPC'ers are doing builds right now and should have some detailed comments on the AVSForum in the next few days.    I'm going to be out of town this week, but when I get home next Sunday will see what the initial feedback looks like ... and if there aren't any showstoppers I'm going to go ahead and order one.   Should be on Newegg by next week.

... The DG33BUC is indeed a rock solid board, however -- so unless you need the HTPC features (I want the hardware decode support), that's a superb choice.   I built a system for my wife a few months ago with the DG33BUC ... and it's still the best system in the house [Her E8400 slightly outperforms my E6850 :-) ]
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