Bug 25532 - Bluetooth intermittent high pitch noise Broadcom 4353
Summary: Bluetooth intermittent high pitch noise Broadcom 4353
Status: RESOLVED INVALID
Alias: None
Product: Drivers
Classification: Unclassified
Component: Bluetooth (show other bugs)
Hardware: All Linux
: P1 high
Assignee: drivers_bluetooth@kernel-bugs.osdl.org
URL:
Keywords:
: 21222 (view as bug list)
Depends on:
Blocks:
 
Reported: 2010-12-23 10:34 UTC by Louis
Modified: 2012-08-14 15:04 UTC (History)
2 users (show)

See Also:
Kernel Version: 2.6.38
Subsystem:
Regression: No
Bisected commit-id:

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Description Louis 2010-12-23 10:34:03 UTC 
On a HP Envy 17 laptop, I'm observing an intermittent high pitch noise (acoustic-electronic) when the btusb module is loaded. This behavior is not present when kernel is configured without bluetooth support.

This issue is present in kernels > 2.6.32 and it's not a regression.
Please let me know the information that you need, if needed I can also try to record with a microphone the noise.
Comment 1 Louis 2010-12-23 10:35:18 UTC 
*** Bug 21222 has been marked as a duplicate of this bug. ***
Comment 2 mohegan 2011-04-20 19:36:37 UTC 
Same bug for with the same computer (HP Envy 17). When I activate the bluetooth, I have same noise. It's very low and I think it come near from the subwoofer.
Comment 3 Alan 2012-08-14 15:04:44 UTC 
If its hardware noise then it's not something the software can do anything about
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