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Sound Card IRQ Problem

Topace
Topace asked
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Last Modified: 2013-12-28
Hi!

I just installed a new Sound Card, and it is using IRQ 12.  Unfortunately, so is my USB bus.  So, the mouse I have on USB is not working correctly when sound plays.  

How do I change the IRQ of the sound card to something different?


~ace
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Commented:
First of all you can try to change the IRQ from within WINDOWS.
Right Click <MY COMPUTER> then <PROPERTIES> then <DEVICE MANAGER>
Double click on your sound card and go to <RESOURCES> from there you can frequently change the IRQ.

If this does not work - assuming that the sound card is in a PCI slot - then go into the BIOS and assign a free IRQ to that PCI slot.

One of these should do the job

Author

Commented:
Here's the thing, though --

I try to change the IRQ setting in windows, but it tells me that that hardware resource cannot be changed.  

Does this mean that I need to assign it from within BIOS?


~ace
HuntyOwner/Operator

Commented:
You can reserve it in BIOS by changing the IRQ to Legacy ISA.  I do this with SB Live cards.  On some mobos you can reserve the DMAs too.  It can't hurt to try it.  Check your DMAs also.

Author

Commented:
So, I change the IRQ of the sound card to LEGACY ISA?  

Ok.  I am having a few problems with my mouse, like I said.  It sticks sometimes, and doesn't allow a right-click at some other points in time.  Do you think this could be caused by the IRQ problems?


~ace

Author

Commented:
I am really having a lot of trouble with my mouse pointer.  After about 30 seconds from startup, the mouse freezes for about 30 secs, then I am good again.  When I use it, though, it seems to do this thing while scrolling.  Like it scrolls in the right direction and everything, but for instance, if I scroll to the right it will go that direction, but it will make small jerks to the left every now and then.  

Any solutions?


~ace

Author

Commented:
BTW --

My sound card is PCI, not ISA.  Just to let you know.


~ace
HuntyOwner/Operator

Commented:
By setting the IRQ to Legacy it reserves it.  It doesn't mean it has to be used by a Legacy device.  As for your mouse, this could be caused by low resourses or low RAM.  How many apps are running in the background when you hit ctrl+alt+del?

Author

Commented:
Well, I have a lot running.  However, I also have quite a bit of RAM.  I have 394 MB of RAM, and when I run Resource Meter, it tells me I have these free resources:

System Resources: 68% Free
User Resources: 68% Free
GDI Resources: 75% Free

So I don't think it's a resource problem.  I had a virus scanner that was constantly scanning my hard drive, and I thought that could be the problem, but when I disabled the scanner, the problem still occurs.  

~ace

Author

Commented:
As far as DMAs go, I have this configuration:

01 -- C-Media PCI Audio Legacy Device
02 -- Standard Floppy Disk Controller
04 -- Direct Memory Access Controller
05 -- C-Media PCI Audio Legacy Device

Does it hurt to have the PCI Audio on more than one DMA?  

How do I change this?

~ace
HuntyOwner/Operator

Commented:
No, in fact I was going to suggest reserving a couple since SB uses 2.  If you can change it in the BIOS that would be best.  Reserve DMA 1 & 5 to Legacy.    As for that darned mouse of yours, would you happen to have MS Office installed?  If so, it comes with a stupid utility called FindFast that messes up everything.  If you have it, uninstall it.  I'm still thinking.

Author

Commented:
Well, I didn't find anything called FindFast.  How would I go about disabling this in MS office?  

Anyway, I will set IRQs 1 and 5 to legacy.  Here is my list of IRQ assignments, just in case you need it:

0     System timer
1     Standard 101/102-Key or Microsoft Natural Keyboard
2     Programmable interrupt controller
3     SCI IRQ used by ACPI bus
4     Communications Port (COM1)
5     (free)
6     Standard Floppy Disk Controller
7     Printer Port (LPT1)
8     System CMOS/real time clock
9     (free)
10     NVIDIA RIVA TNT2 Model 64/Model 64 Pro
10     ACPI IRQ Holder for PCI IRQ Steering
11     Linksys LNE100TX Fast Ethernet Adapter(LNE100TX v4)
11     ACPI IRQ Holder for PCI IRQ Steering
12     CMI8738/C3DX PCI Audio Device
12     VIA Tech 3038 PCI to USB Universal Host Controller
12     VIA Tech 3038 PCI to USB Universal Host Controller
12     ACPI IRQ Holder for PCI IRQ Steering
13     Numeric data processor
14     Primary IDE controller (dual fifo)
14     VIA Bus Master PCI IDE Controller
15     Secondary IDE controller (dual fifo)
15     VIA Bus Master PCI IDE Controller

Thanks --

~ace

Author

Commented:
Whoops -- Sorry, didn't catch that the first time.  I will reserve DMA 1 and 5 in the BIOS.  

~ace
HuntyOwner/Operator

Commented:
You should be able to just disable it through msconfig on the startup tab but it's actually better if you uninstall it altogether through Add/Remove Programs in the control panel.

Author

Commented:
Ok...I disabled FindFast.  I hope this helps.  I will let you know, and if it does, give you points Huntress.  

~ace
HuntyOwner/Operator

Commented:
Good luck!  :-)

Author

Commented:
I re-installed a driver that the C-Media company sent me.  It now has the following IRQ configuration:

12 ACPI IRQ Holder for PCI Steering
12 VIA Tech 3038 PCI to USB host controller
12 "    "    "    "   "  "   "    "
12 CMI8738/C3DX PCI Audio Device
12 CMI87873/C3DX PC MPU-401

And now I am having the same problems again.  I had it fixed before, but the sound card wasn't working correctly.  Now, I found out it was a driver conflict, and updated the driver with the one I have now, and now it has the mouse problems again, along with sound being choppy when I open a program.  You are right, the symptoms sound like a resource problem, but my resources are fine (I load Resource Meter everytime the computer starts).  

Any suggestions?

~ace

Author

Commented:
I noticed something else --

My DMAs have changed, too.  They now look like this:

02 Standard Floppy Disk Controller
04 DMA Access controller

I took your advice, huntress, and reserved DMAs 1 and 5 to legacy in BIOS.  Is this why they don't show up in windows?  I am looking at the properties of "Computer" under Device Manager.

~ace

HuntyOwner/Operator

Commented:
You might be able to change the IRQ through Device manager by highlighting the soudcard and clicking Properties then click on the Resource tab.

Author

Commented:
Anyone else have suggestions that I might be able to try and resolve this problem with?

~ace
HuntyOwner/Operator

Commented:
You could try disabling the DOS Emulator in Device Manager.  This usually frees up an IRQ and is unncessary unless you play pure DOS mode games.

Author

Commented:
What would it be called under my Device Manager?  I can't find anything with a name resembeling DOS Emulator.

~ace
HuntyOwner/Operator

Commented:
Just looking for anything that has Emulation in it.

Author

Commented:
Would it be under sound, media, and game controllers, or system, or what other sub category?

~ace
HuntyOwner/Operator

Commented:
More than likely under sound/multimedia, but it could be under Miscellaneous (Misc.) also.  Check anything that has that name of your soundcard on it too.

Author

Commented:
Like MPU-401?
HuntyOwner/Operator

Commented:
No.  That's your Midi port.  By the way, what brand of soundcard do you have?  This might help a bit.

Author

Commented:
I have a C-Media 8738.
It's a PCI soundcard, I think a Soundblaster Pro similar.
HuntyOwner/Operator

Commented:
This might be of interest to you at this point.  http://www.sysopt.com/userreviews/sound/reviewhtml/C-Media_8338_and_8738.html
It seems you're not the only one having major difficulties with this soundcard.

Author

Commented:
I see.  How do I get a new wavetable?  Is it a software device that needs to be flashed on the chip, or is it a hardware piece I need to actually replace?

~ace

Author

Commented:
This still doesn't explain the problems I am having with my mouse.  I am not unsatisfied with the sound card.  It works fine for what I paid for it.  My mouse, however, doesn't go in one direction.  I drag it in one direction, and it seems to "jitter" in other directions as it moves in the direction I want it to.  

I have a Belkin F8E850-OPT optical mouse, USB.  

~ace
HuntyOwner/Operator

Commented:
To be honest, I've never been a big fan of USB mice and I won't use one.  I use an optical mouse too and install them on most of my builds but they're PS2.  USB usually doesn't take an IRQ so I doubt this is the problem unless you have something else plugged into the PS2 port for the mouse.  Have you tried reinstalling the software and drivers for the mouse?

Author

Commented:
Yes, I have tried reinstalling the drivers several times.  I could use a PS2 adapter, and that may help.  The USB mouse itself doesn't take an IRQ, but the USB controller does.  

~ace
Owner/Operator
Commented:
Then using the adapter might be the answer at this point.  Give it a try.  It can't hurt.
HuntyOwner/Operator

Commented:
Sorry I couldn't have been more help on this Topace.

Author

Commented:
Naw, that's ok.  It seems to be a conflict that was in my mouse.  My mouse no longer works, and I had to get a new one.  Hence, problem solved lol.  I had to end the question somehow, and I apologize for giving you a less-than-excellent grade, but the problem wasn't really solved as a result of this forum, so I didn't feel it deserved an "A" grade.  

Thanks --  

~Scott

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