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installing multiple graphics drivers with firewire audio drivers

hello, srry for lengthy text but I've posted bfore with no luck...

I have the ATI Radeon Hd 5870,
and the ATI Radeon Hd 3650.

When I install the driver for the 5870, the 3650 doesnt work.
Then, when I install the driver for the 3650, the 5870 works, but the sound skips really bad if I have them both on at the same time.

before , I had the ATI Radeon 2600 and the 3650 went HDMI to my Tv. I'de watch movies directly on my tv perfectly with no sound skipping. Now, with the better graphics card(5870), If I have the 3650(tv) on and do anything on the 5870(monitor), the sound skips really bad.

Im wondering if the way I installed the video drivers...installing one driver over the other until it worked, may have messed with the audio driver going to my audio device(both cards drivers include hdmi audio drivers).

I tried uninstalling just the hdmi audio driver for the 5870, but nothing changed. I tried uninstalling just the graphics driver for the 5870 and the sound actually worked from the 3650 to the tv like before, so I think its the way im installing the 5870 thats messing with the firewire mixer drivers.

If someone knows the answer to this great, but if not, could someone find the right drivers for each card and step me through how to properlly install these drivers?

I also have the ALESIS Multimix Firewire 8 (audio device), should I uninstall this and install audio drivers after all video cards have been installed???
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tyepoe
Asked:
tyepoe
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1 Solution
 
PCBONEZCommented:
The HDMI Audio Drivers for the video cards only manipulate sound fed to the card from a sound card.

If you want two audio streams then you need two sound cards, one for each video card.

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tyepoeAuthor Commented:
what about the drivers working for the two video cards?
I had 2 different graphics cards working before,
now, with the 5870, sound skips really bad when the 3650 is on?
I didnt have that problem before.

I am installing a driver for each card right now, 5870 then 3650(wont work the other way around for some reason), and then firewire audio device driver.

I still think the sound will skip since this is the same way I installed the drivers last time...
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PCBONEZCommented:
That would be like using one single channel amplifier and trying to play two different songs to two different pairs of speakers at the same time.

If you say you got that to work then you must have. I just can't see how it's even possible.
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tyepoeAuthor Commented:
I can see wat ur saying, but I just tried it ur way...

I know the 3650 will work by itself and with the 2600, so...

I connected everything with the 5870 instead of using both cards.  

By itself(5870), I have the hdmi out going to HD TV. Then I have the vga going to the monitor. I'm playing a movie on the HD TV and the video is fine, but the audio is even worse(I'm not even doing anything with the main screen...?).

Now every once in a while, audio turns on, rather than with both cards every once in a while, audio turned off.

With the program that comes with my audio device, I can set 'safe mode level'. Without safe mode on, the audio barely plays. With it on 'safe mode 3(highest setting),' it plays more audio, but then will stop after a while.

Maybe my intel quad core 2 with 8gigs is not enough for the 5870?
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tyepoeAuthor Commented:
I just removed and un-installed the drivers for the firewire mixer. I plugged  the audio coming straight out from the computers audio out to the mixer on an individual channel.

The computer can play movies now on the tv while doing anything on the main monitor.

For some reason the computer is too slow to play with the firewire mixer hooked up.
Would I have to buy a seperate sound card with with firewire out to connect the firewire mixer into??? I thought the firewire mixer acted as its own sound card ??
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PCBONEZCommented:
The extra steps [time it takes] in processing the sound are probably putting it out of step with the video.
That would certainly make it skip and sputter.
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PCBONEZCommented:
Out of step = out of sync.
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tyepoeAuthor Commented:
So if I already have...

New intel board
Intel quad core 2
8gigs ram
Ati radeon 5870 HD

what do I have to have, as far as hardware, to power another graphics card and firewire audio? Do I have to buy a workstation (2 cpu's) to be able to power 2 graphics cards along with the firewire audio without lag?

Like I said before, everything works now that I only have regular audio out(no firewire drivers), and only running the one 5870 for both monitor and tv...
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PCBONEZCommented:
Processing power isn't the problem at all.
An old P3 computer could do this because the vid cards have their own processor and RAM.

As I said.
It looks to me like you have one sound chip and you are trying to send two sound streams through it at the same time. [One stream each for two displays.].

I don't understand how you got it to work before unless perhaps:
The older vid card used analog audio and the sound ship is capable of and managed to send a digital sound signal plus an analog sound signal at the same time from different sources..
,, and now both vid cards use digital audio signals so it can't send two sound signals in parallel.

You're making me think hard on this one [never tried 2x sound myself] and I'm only on my first cup'a coffee so if I seem in left field then I am.
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tyepoeAuthor Commented:
I see what ur saying about routing the signals. All I did was go into 'sounds' in 'control panel,' disable the hdmi sounds and set the audio device as the default.

So how does anyone typically hook up up to say 4 graphics cards, and get sound to go to 2 external speakers
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PCBONEZCommented:
They use multiple sound cards.

Personally I think it's easier to just have a dedicated PC for the TV setup as a PVR.
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tyepoeAuthor Commented:
So just so i got it right, every graphics card needs its own audio source that would then go into the mixer on its own channel...

I've never hooked up a particular video device to an individual sound card,

would you know how to do this (i'm sure its all in control panel)?
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PCBONEZCommented:
With HDMI the audio connection is basically just a pass-through to get the sound and video in the same cable.
[On-board HDMI and add-in video is the same in that but with on-board you don't always need a sound cable. Some boards have it hard-wired through the board. Others provide a sound-in connector for the HDMI jack.]

As you are using two different sound streams at the same time the player program should have it's own dedicated sound card. That will keep the audio and video in sync with each other.

When the audio is faster or slower than the video, the player program is continually trying to match them back up.
-That's where all the skipping comes from.-
The player is jumping around the audio track trying to re-sync the 'sound time' with the 'video time' in the show or whatever.

Trying to play two streams from one sound chip [even if it supposedly handles it] is really likely to cause delays in the processing of the sound and the delays will put it out of sync with the video.
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