G751 Imbalanced Sound Problem OFFICIAL SUPPORT THREAD (thread closed)

[BRSxIgnition]

I've created this thread to condense the information we've gathered on this issue over the course of the old thread, which can be found here.

Current Fix Status:
Fix Here: https://rog.asus.com/forum/showthread.php?57462-G751-Imbalanced-Sound-Problem-FIX-IS-OUT!

Current Probable Issue Diagnosis:
Regular Signal instead of LFE (Low Frequency Effects) Signal to Subwoofer

Description (In different states):

Installed Drivers (Main Issue):

All speakers "working", but WITH massive imbalance issue.Sub greatly overshadows L/R Speakers & also distorts at volumes above 35%. Can hear sound very faintly coming from L/R speakers with ear pressed up against them.

Uninstalled Drivers (Temporary Fix):

Subwoofer (Only) is default playback device, with L/R Speakers being listed as a separate playback device. Left and Right Speakers working at full volume when selected as default playback device, with no sound
coming from subwoofer. Subwoofer can play audio when selected as default device, but distorts at volume levels above 35%, and does not work in conjunction with rear speakers in this configuration. (Either/Or Situation)

Reinstalled Drivers (Main Issue, Again):

Same effect as "Installed Drivers" every time. (All speakers "working", but WITH the imbalance issue. Sub greatly outpowers L/R Speakers & also distorts at volumes above 35%. Can hear sound very faintly coming from L/R speakers with ear pressed up against them.)

**NEW** Subwoofer Disabled (New Finding/Confirmation):

L/R Speakers can be heard perfectly fine when Subwoofer is disabled using the "Vbcmd_mute_int_woofer" Mute.exe file provided by MarshallR@ASUS on the ROG Forums. Cannot comment on volume level, but volume seems to scale fine without the subwoofer to overshadow it. This confirms the situation is a software issue, and all speakers are physically fine.

This issue is known to arise both brand new "out of box" units as well as on units where the OS has been cloned or reinstalled on a new drive and the ASUS Support Site drivers have been used. All G751 Models can have this issue.

Temporary Fixes:
As mentioned in the description, the speakers still work fine, proving that the issue is Software, not Hardware-related.

To get your Left & Right back speakers working correctly, follow the temporary fix guides below.

**NEW** TEMPORARY FIX - DISABLE SUBWOOFER:

• Download and extract this RAR file.
  
• Make sure you have the ASUS G751 Realtek Drivers installed. You can find them here.
  
• Unzip Vbcmd_mute_int_woofer tool, and run Mute.exe.
  
• If it returns a "Success!" message, your subwoofer should now be disabled.
  
• If you ever need to enable your subwoofer again (when a fix is issued), simply unzip Vbcmd_unmute_int_woofer and run Unmute.exe.
  
• Viola.
  

Enjoy your tinny-back speakers with no sub until we get a fix from ASUS. Until then, keep checking in here for updates, and let us know if you find anything!

Edit by cl-Albert 2/5/15: Very late thanks for looking into this and apologies for the delay, BRSxIgnition.
The new *.7432 G751 audio driver has finally been released, so this thread has been closed (to avoid 2 competing threads) and a new thread started.
If anybody is interested, please post your testing results or comments about this new audio driver at the post below. Thanks!

G751 Imbalanced Sound Problem FIX IS OUT!
https://rog.asus.com/forum/showthread.php?57462-G751-Imbalanced-Sound-Problem-FIX-IS-OUT!

[x7007]

So is it a hardware or a software issue in the end ?

[crudetrader]

my unprofessional opinion is that its software, other wise different driver orientations (ie windows drivers ) wouldnt allow sound on rear speakers to be more prominant

only way to know with any certainty is to get this driver/ui HELOOWW?? Again not being omnipotent in new software formulation and knowing other companies are likely involved how long does it friggin take??

[Adly2010]

Is there any possibility that this defect is a result of a hardware issue?

[xeromist]

Adly2010 wrote:
Is there any possibility that this defect is a result of a hardware issue?

Various testing has shown that all of the components are working, they just aren't working in balance. That should be fixable in a driver.

[toronto699]

My Question is does Asus have a G751 with the issue , if they do not have a G751 with the defect then its almost impossible to find a fix weather its software or hardware as it probably can not be duplicated in a G751 without the sound defect issue. 2 people that I know that had the sound issue returned their G751. and if and when Asus does find a fix u will be stuck with that modified driver for ever , u will never be able to use an updated drive as the chances are u will revert back to the audio issue if u do

Reply to Xeromist post below , well since Asus and Realtek are both HQ'D in Taiwan , surely Asus could go down the block and give Realtek a defective G751 with the audio issue Maybe MarshalllR could deliver it.

[xeromist]

I don't see why future drivers shouldn't include the fix. The only situation where that might be a problem would be if the fix for ASUS negatively impacts other implementations of the same Realtek chip.

Also, the question is not whether ASUS has a faulty G751, but whether Realtek has one. Realtek is the one that will have to create the fix so I certainly hope they have access to one that they can use for testing.

[apeace22]

are the driver came out already?

[toronto699]

apeace22 wrote:
are the driver came out already?

No Driver or fix yet

[iannebres]

Wondering if my problem is the same as you guys, but the subwoofer won't work on mine. And I just got mine yesterday, bit disappointed.

[Adly2010]

iannebres wrote:
Wondering if my problem is the same as you guys, but the subwoofer won't work on mine. And I just got mine yesterday, bit disappointed.

no, you must return it for replacement
the subwoofer works on mine, but makes some vibrations >> so I disabled my subwoofer by the software posted in the first page in this thread >> after disabling the subwoofer the sound became less loud >> so I enabled it again
is this normal ? is enabling the subwoofer hurt it ?