[Bug 281732] Re: Mute button not properly working on current Lenovo Thinkpads x200/x200s , t400/t500, X300/X301, & W series

[allan999]

kernel: Linux 2.6.31-20-generic-pae #58-Ubuntu SMP Fri Mar 12 06:25:51 UTC 2010 i686 GNU/Linux
Ubuntu 10.04 on a Thinkpad T500

when no headphone jack connected:
the "mute" button mutes sound, but does not unmute - you have to press vol up/down to unmute
vol up/down work as expected

when headphones/ext. speakers are connected via the headphone jack:
the "mute" button does absolutely nothing
vol up/down work as expected

Also:
when i press "mute" with no headphones and then connect headphones - they are not muted
I kinda like this feature/bug, but maybe its connected somehow.

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Mute button not properly working on  current Lenovo Thinkpads x200/x200s , t400/t500, X300/X301, & W series
https://bugs.launchpad.net/bugs/281732
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