[ltp] detecting hardware mute?

[Kevin Fenzi]

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Greetings. 

Does anyone know a way to detect if a thinkpad is in the "mute" state?

Ie, I push the mute button, tpb sets the nvram to mute everything
(very handy for meetings, etc), but then I would like to have some
kind of indicator that shows me I have mute on, so I can remember to
unmute later. 

You can't detect it from mixer settings. possibly there is a way from
reading /dev/nvram? 

Something that could keep an OSD up about it would be ideal. 

kevin

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