[Gta04-owner] AUX Button

Lukas Märdian luk at slyon.de
Sat Apr 6 23:31:38 CEST 2013

Am 06.04.2013 20:41, schrieb Gerhard Rieger:
> On 2013-04-06 19:30, Dr. H. Nikolaus Schaller wrote:
>> Am 06.04.2013 um 19:07 schrieb Gerhard Rieger:
>>> Hi,
>>> I recently migrated to gta04. The AUX Button had not worked on gta02
>>> since some months (pressing it had no effect), and the same is still
>>> true with gta04. I suspect that - once pressed - the button does not
>>> return to its idle position. LEDs are working fine.
>>> How can I inquire the button state from HW validation or QtMoko?
>> 2.6-kernel hwvalidation:
>> 	http://projects.goldelico.com/p/gta04-kernel/page/Devices-Overview/#wikititle_8
> My Debian Wheezy in NAND of a group tour device Dec.2012 does not have
> /sys/devices/virtual/gpio/gpio7/ (many others with different numbers though)
>> 3.7 kernel: 
>> 	evtest /dev/input/aux 
> yes that works
>>> What mechanism should bring the button back after pressing?
>> The button part sitting on the PCB has a built-in spring with some small force.
>> If the button is stuck this means that the plastic case has more friction than
>> the button's spring force.
>> Please check if it works if you remove the display cover.
>> If yes, you can try to scratch a little off the plastic parts of the transparent
>> AUX button part and/or the black plastics. Until it can be moved.
>> Hope this helps.
> Ah yes, forcing the guitar pick into the seam near the button releases
> it - thanks for your help!!

Hi, I had the same problem quite some time ago.

Here is how I fixed it:


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