[ltp] Headset connector on newer Thinkpads

[linux-thinkpad@linux-thinkpad.org]

On 09/04/2014 04:05 PM, Joerg Bruehe wrote:

> [ ... ]
> 
> 2) Is it possible to use a USB headset on the T530 running Ubuntu 14.04?
> I need it for Skype and a SIP (VoIP) softphone.

I use a Plantronics C620 USB headset with my T530 under 14.04/compiz. As
it has volume buttons it acts as an HID, too, which confuses X and the
user, e. g. hitting mic mute while the mute LED is lit gives you a mouse
middle button paste.

If your mouse stops working enter

    xinput float 'Plantronics Plantronics C620'

and everybody is happy again.

BTW the mic mute button on the laptop, oops, ThinkPad[TM] does not work,
but the LED shows its status which can be changed in the sound settings
menu. Sometimes the LED gets confused and shows the opposite status but
right now I cannot reproduce this.

And while we're at it, the brightness keys Fn-F8 and Fn-F9 only work on
non-graphic consoles so you have to e. g. Ctrl-Alt-F1 to change brightness.

Somebody has fixes for these?

Chris