If this is your first visit, be sure to check out the FAQ by clicking the link above. You may have to register before you can post: click the register link above to proceed. To start viewing messages, select the forum that you want to visit from the selection below. |
|
|
Thread Tools | Display Modes |
#1
|
|||
|
|||
Humming sound through speakers when Mouse is active or....
Hello, I think my computer isn't grounded but I checked the power cord
and its plugged into a 3 prong (grounded) outlet. Still I hear Humming sound through speakers when Mouse is active or when I drag windows or item. Please advise. TIA! |
#2
|
|||
|
|||
Humming sound through speakers when Mouse is active or....
Bob Smith wrote:
Hello, I think my computer isn't grounded but I checked the power cord and its plugged into a 3 prong (grounded) outlet. Still I hear Humming sound through speakers when Mouse is active or when I drag windows or item. Please advise. TIA! Bring up the mixer panel, and mute all the inputs, then retest. I have a Linux LiveCD environment, that does something like that, namely, every time you move the mouse, you hear "musical" sound effects in the background. (Not all the LiveCDs I have, do that, just the one.) In comparison, if I run Windows, there are no sounds. And the difference could well be, the muting of the inputs. The mixer panel can have a couple rows of controls in it, and make sure you're muting the correct ones, for it to be effective. For example, there is a Playback "Line-In" and a Record "Line-In". There can also be things like "Stereo-Mix", which could be the feature that loops the input signals, back to the speakers. It may have been referred to at some point as "What You Hear" or the like ? In any case, the Windows control panel has plenty of controls to play with. In rare cases, the problem is a design issue, such as the LAN wires on the motherboard, being too close to the audio circuit tracks. You could also be right, that the issue is grounding. I have even had problems here, where, when you shut down the computer and the computer (amplified) speakers are still powered, you can hear a local radio station. Implying a semiconductor junction somewhere is rectifying the signal from a local radio station. I don't have an answer, for where that is coming from, and the best way to solve it. So if you're lucky, it'll just be an input "flapping in the breeze", and clicking the mute button underneath the slider, will quiet it. When recording with your sound system, you only need to "open" an input when you're using it. So leaving all the inputs unmuted all the time, isn't a necessity. Paul |
#3
|
|||
|
|||
Humming sound through speakers when Mouse is active or....
On Fri, 25 Mar 2011 04:04:20 -0500, Bob Smith wrote:
Hello, I think my computer isn't grounded but I checked the power cord and its plugged into a 3 prong (grounded) outlet. Still I hear Humming sound through speakers when Mouse is active or when I drag windows or item. Please advise. TIA! i FORGOT TO POST MY CORE. Gigabyte GA-880GM-UD2H DualCore AMD Athlon II X2 255, 3100 MHz (15.5 x 200) |
#4
|
|||
|
|||
Humming sound through speakers when Mouse is active or....
Bob Smith wrote:
On Fri, 25 Mar 2011 04:04:20 -0500, Bob Smith wrote: Hello, I think my computer isn't grounded but I checked the power cord and its plugged into a 3 prong (grounded) outlet. Still I hear Humming sound through speakers when Mouse is active or when I drag windows or item. Please advise. TIA! i FORGOT TO POST MY CORE. Gigabyte GA-880GM-UD2H DualCore AMD Athlon II X2 255, 3100 MHz (15.5 x 200) And if it's not a mixer setting issue, there is always one of these. This would be useful, if you really have multiple grounds, and the audio amp or device is on a different power strip or outlet. "Ground Loop Isolator" http://www.radioshack.com/product/in...ductId=2062214 Mouse movement, should cause higher frequency noises, noises that wouldn't be confused with 60Hz or 50Hz hum. Mouse noises would be picked up on an "open input", and using the mute in the mixer can stop that in some cases. Paul |
#5
|
|||
|
|||
Humming sound through speakers when Mouse is active or....
Bob Smith wrote:
Hello, I think my computer isn't grounded but I checked the power cord and its plugged into a 3 prong (grounded) outlet. Still I hear Humming sound through speakers when Mouse is active or when I drag windows or item. Please advise. TIA! I am well-aware of how annoying the problem is! I had that problem with my P55A-UD4P board. Turn off the CPU fan management (or whatever it's called) and and set the BIOS so your CPU fan set to ALWAYS ON, and your problem will GO AWAY! It worked for me... Good luck! Bill |
#6
|
|||
|
|||
Humming sound through speakers when Mouse is active or....
Bill wrote:
Bob Smith wrote: Hello, I think my computer isn't grounded but I checked the power cord and its plugged into a 3 prong (grounded) outlet. Still I hear Humming sound through speakers when Mouse is active or when I drag windows or item. Please advise. TIA! I am well-aware of how annoying the problem is! I had that problem with my P55A-UD4P board. Turn off the CPU fan management (or whatever it's called) and and set the BIOS so your CPU fan set to ALWAYS ON, and your problem will GO AWAY! It worked for me... Good luck! Bill If that is the case, you may also want to run a DPC latency check. http://www.thesycon.de/deu/latency_check.shtml It could be, that the motherboard fan control is implemented in an SMM routine. SMM basically preempts the OS for a fraction of a second (it's all powerful). Improper code design in SMM mode, can make a motherboard useless for real time applications. And disrupting sound, is just one example. SMM allows "BIOS code" to run, while you're using your computer. http://en.wikipedia.org/wiki/System_Management_Mode When Gigabyte had problems like this in the past (bad DPC results), a BIOS update sometimes fixed it. When my system is idle, my chart really does look something like this. If I alt-tab out of a game, sometimes I'll see one really bad latency spike, as the video card mode is changed. A DPC cannot get serviced, while in SMM mode, so the size of the DPC average spiking, can be indirect evidence of "too much SMM". http://www.thesycon.de/dpclat/dpclat1.jpg Paul |
#7
|
|||
|
|||
Humming sound through speakers when Mouse is active or....
Paul wrote:
Bill wrote: Bob Smith wrote: Hello, I think my computer isn't grounded but I checked the power cord and its plugged into a 3 prong (grounded) outlet. Still I hear Humming sound through speakers when Mouse is active or when I drag windows or item. Please advise. TIA! I am well-aware of how annoying the problem is! I had that problem with my P55A-UD4P board. Turn off the CPU fan management (or whatever it's called) and and set the BIOS so your CPU fan set to ALWAYS ON, and your problem will GO AWAY! It worked for me... Good luck! Bill If that is the case, you may also want to run a DPC latency check. http://www.thesycon.de/deu/latency_check.shtml It could be, that the motherboard fan control is implemented in an SMM routine. SMM basically preempts the OS for a fraction of a second (it's all powerful). Improper code design in SMM mode, can make a motherboard useless for real time applications. And disrupting sound, is just one example. SMM allows "BIOS code" to run, while you're using your computer. .... Paul Paul, It was not a latency problem. It was more like a "radio station" problem. (Obviously) I am not a EE. I think some sort of sensor whose job it was to determine how fast the CPU fan needed to be was picking up frequencies caused by mouse actions (and other devices like the HDD). If you turned the volume on your computer ALL the way up you would probably simulate the problem, if you have a corded mouse (at least my older computers acted that way). Hope I've adequately described the problem..I'm just glad my system doesn't suffer from it anymore. Someone else's post, probably on tomshardware.com, helped me locate the solution almost a year ago. Bill |
Thread Tools | |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
sudden humming sound and loss of video audio | Roy[_5_] | General | 0 | July 6th 09 09:46 AM |
Mouse movement creates static in speakers | Phil Kretsinger | General | 1 | May 4th 05 12:13 AM |
Humming sound in CD and DVD Player | Aryan | General Hardware | 1 | March 5th 05 02:01 AM |
How do i disable, mouse click sound from speakers? | Sam-No Spam Plz | Dell Computers | 3 | December 25th 03 02:11 PM |
Humming from Speakers | Brian | PC Soundcards | 0 | September 1st 03 10:36 PM |