Mac Audio Balance Bug That Apple Knew About 12 Years Ago Still Exists

Apple has still not fixed a bug in macOS that causes the audio balance to drift on Macs under certain conditions, despite having acknowledged the issue 12 years ago.

sound balance bug 1
A developer named Fabian highlighted the problem today in a post on X (formerly Twitter), claiming that Apple "still has not fixed the audio left/right balance bug in macOS. I still have to use an app to fix it automatically. The app is from 2015, that means we are approaching the 10 year anniversary [of the bug]."

Balance Lock is the app in question, a free download available from Tunabelly Software. The bug's continuing existence was corroborated by other users who responded to the X post and commented on it over on Hacker News. However, it seems as though the issue has persisted for even longer than Fabian initially supposed.

Writing in 2013 on Stack Exchange, one user claimed to have experienced the same bug on multiple Macs going back to 2003. Whether or not that is the case, what we do know is that Apple acknowledged the bug on February 12, 2012 in a Mac OS X 10.2 support document, which is no longer on Apple's website but retrievable via the Internet Archive's Wayback Machine. In it Apple states:

In some cases the audio balance may unexpectedly drift towards the left or right channel. This can happen if you rapidly press the volume up or down keys while the computer's microprocessor is under heavy load.

To rectify the problem, Apple advises users to open the Sound panel in System Preferences (now System Settings) and "Drag the audio balance slider to the desired position."


Given Apple's advice at the time, it sounds like the company had not been able to come up with a proper fix when the support document was published, which begs the question as to whether it still has no solution to the bug, and that is why the company has let it remain in successive versions of Mac OS X and macOS up to this day.

Have you experienced the audio balance drifting on your Mac? Let us know in the comments.

Related Roundup: macOS Sonoma

Top Rated Comments

Havalo Avatar
10 weeks ago
Apple has higher priorities. For example, Emojis!
Score: 48 Votes (Like | Disagree)
MrENGLISH Avatar
10 weeks ago
Been using macOS for 20 years and this is the first time I’m learning about this bug. Not saying it doesn’t exist. I just never experienced it myself.
Score: 28 Votes (Like | Disagree)
GtrDude Avatar
10 weeks ago
Well, that's Apple for ya today.
If not enough people complain, they don't give two cents about it.
Score: 27 Votes (Like | Disagree)
EightyEight Avatar
10 weeks ago

If Steve Jobs could talk...o_O
"Can anyone tell me what the balance control is supposed to do?

Then why the f*** doesn't it do that?"
Score: 20 Votes (Like | Disagree)
Alvinc Avatar
10 weeks ago
It‘s just a tip of the iceburg. There are especially search bugs still haven’t been fixed on Apple Notes.
Score: 18 Votes (Like | Disagree)
douscinco Avatar
10 weeks ago
I've checked it and it is centered. I think it never happened to me but, as a musician and sound engineer, this could be nasty and worrying!
Score: 17 Votes (Like | Disagree)

Popular Stories

Apple Silicon AI Optimized Feature Siri

Apple Releases Open Source AI Models That Run On-Device

Wednesday April 24, 2024 3:39 pm PDT by
Apple today released several open source large language models (LLMs) that are designed to run on-device rather than through cloud servers. Called OpenELM (Open-source Efficient Language Models), the LLMs are available on the Hugging Face Hub, a community for sharing AI code. As outlined in a white paper [PDF], there are eight total OpenELM models, four of which were pre-trained using the...
iOS 18 Siri Integrated Feature

iOS 18 Rumored to Add These 10 New Features to Your iPhone

Wednesday April 24, 2024 2:05 pm PDT by
Apple is set to unveil iOS 18 during its WWDC keynote on June 10, so the software update is a little over six weeks away from being announced. Below, we recap rumored features and changes planned for the iPhone with iOS 18. iOS 18 will reportedly be the "biggest" update in the iPhone's history, with new ChatGPT-inspired generative AI features, a more customizable Home Screen, and much more....
maxresdefault

Apple Announces 'Let Loose' Event on May 7 Amid Rumors of New iPads

Tuesday April 23, 2024 7:11 am PDT by
Apple has announced it will be holding a special event on Tuesday, May 7 at 7 a.m. Pacific Time (10 a.m. Eastern Time), with a live stream to be available on Apple.com and on YouTube as usual. The event invitation has a tagline of "Let Loose" and shows an artistic render of an Apple Pencil, suggesting that iPads will be a focus of the event. Subscribe to the MacRumors YouTube channel for more ...
Apple Vision Pro Dual Loop Band Orange Feature 2

Apple Cuts Vision Pro Shipments as Demand Falls 'Sharply Beyond Expectations'

Tuesday April 23, 2024 9:44 am PDT by
Apple has dropped the number of Vision Pro units that it plans to ship in 2024, going from an expected 700 to 800k units to just 400k to 450k units, according to Apple analyst Ming-Chi Kuo. Orders have been scaled back before the Vision Pro has launched in markets outside of the United States, which Kuo says is a sign that demand in the U.S. has "fallen sharply beyond expectations." As a...
iPad And Calculator App Feature 1

Apple Finally Plans to Release a Calculator App for iPad Later This Year

Tuesday April 23, 2024 9:08 am PDT by
Apple is finally planning a Calculator app for the iPad, over 14 years after launching the device, according to a source familiar with the matter. iPadOS 18 will include a built-in Calculator app for all iPad models that are compatible with the software update, which is expected to be unveiled during the opening keynote of Apple's annual developers conference WWDC on June 10. AppleInsider...
macbook pro purple february

Best Buy Introduces Record Low Prices on Apple's M3 MacBook Pro for Members

Thursday April 25, 2024 7:41 am PDT by
Best Buy is discounting a collection of M3 MacBook Pro computers today, this time focusing on the 14-inch version of the laptop. Every deal in this sale requires you to have a My Best Buy Plus or Total membership, although non-members can still get solid second-best prices on these MacBook Pro models. Note: MacRumors is an affiliate partner with Best Buy. When you click a link and make a...