Bug 76831

Summary: thinkpad-acpi: Enable microphone mute LED
Product: ACPI Reporter: Andrea Scarpino (me)
Component: Power-OtherAssignee: acpi_power-other
Status: CLOSED INVALID    
Severity: low CC: lenb
Priority: P1    
Hardware: All   
OS: Linux   
Kernel Version: 3.14.4 Subsystem:
Regression: No Bisected commit-id:

Description Andrea Scarpino 2014-05-24 18:29:35 UTC 
My Thinkpad X220 doesn't power on the mic led when it's muted.

Seems that a patch for this already exists[1], but never got merged. There's also[2].

I did a reserch for existing bugs, but found none.

I'd like to see this patch merged or to know why it can't be merged.
Free to ask if you need more info.

Thank you very much.

[1] http://comments.gmane.org/gmane.linux.drivers.platform.x86.devel/1962
[2] https://lkml.org/lkml/2011/8/4/323
Comment 1 Andrea Scarpino 2014-05-24 18:31:38 UTC 
Sorry, I just found that this is a bug in Qt instead.
The button isn't recognized by Qt. In fact, muting the mic via Alsa correctly shows the led powered on.