Windows attempts to auto detect any changes to the plugs in your sound card. That doesn’t work well with my sound card (X-Fi something) so the speakers keep falling in and out randomly.
The sound card drivers are located under the registry key:
Search for “EnableDynamicDevices” (located under GlobalSettings somewhere) and set it to 0 (zero).
Note: You may have multiple sound cards (and old drivers), so repeat search to find all occurences in ClassId branch described above.
I’m spent a few days in figuring this out so I hope it helps!
Edit: The sound card on my Lenovo W510 seemed really bad (on powerfull high pitched sounds it would “break through” and play music normally). I figured since the W510 had only 1 socket it was a combined speaker/mic. So I did above patch, rebooted and suddenly the card works as expected.
Edit 2: Michael L. pointed out changing “ForceDisableJD” to 1 helped him. Michael has shared his findings in a comment on this page.
2 thoughts on “Disable Windows 7 Sound Card Jack Sensing”
In my case I had to change a different value in the registry called ForeceDisableJD. See the post here:
<a href="http://earsonfire.com/thextramoney/2010/05/16/how-to-disable-jack-detection-on-windows-7/" rel="nofollow ugc">http://earsonfire.com/thextramoney/2010/05/16/how-to-disable-jack-detection-on-windows-7/</a>
and especially my comments (Michael L.) on that page.
Thank you for sharing. Added it to the article.