Capacitive buttons problem

alexvv

Senior Member
Jan 13, 2013
135
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Athens
i've used almost every custom rom for s3 mini and it's dedinitely a kernel problem. my greek i8190 has dead cap. buttons with bln kernel and golden kernel too... i really really hope you've got a fix for this issue.. bit i am running cm 10.2 anyway with on screen buttons. and, no, flashing the rom via odin doesn't solve the problem.
 

alexvv

Senior Member
Jan 13, 2013
135
18
0
Athens
please developers try to fix that stupid bug because of samsung... there must be at least 1-2% of s3 minis that their cap. buttons don't work after a kernel change (like in cm10. 10.1, 10.2)... i wish i could solve it but i' not a developer, i don't know that much...
 

peter_baz

Senior Member
Apr 16, 2011
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93
Originally Posted by OliverG96
I guess your button leds aren't working because of a missing symlink, actually the real path that controls the leds is /sys/devices/platform/i2c-gpio.7/i2c-7/7-0020/leds/button-backlight/brightness, if you go and open that file you will see that writting a 1 inside will turn on leds, and a 0 will turn of them.
The file we're actually using is just a symlink, I mean our path in use is fake on /sys/class/leds/button-backlight, which is linked with the real path, because is the global way that android uses. Changing it to point to the real path instead of the symlink may likely give compatibility problems with other apps, so I cannot change that on my public releases. But now that I said you what's wrong you can investigate it yourself.

A command that may work for this case is to run this on terminal and reboot (I'm not sure at all):

su
ln -s /sys/devices/platform/i2c-gpio.7/i2c-7/7-0020/leds/button-backlight/ /sys/class/leds/button-backlight/


didnt work for me but doesnt harm to try
 
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MarcEcko

Member
Jan 7, 2012
10
1
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Mazatlan
It may seem offtopic, but it actually isnt:

In some devices capacitive buttons begin to fail as soon as you flash your phone!. If anyone with a failing phone is in doubt, go ahead back to stock and try rooting (be it by flashing with ODIN or installing as update.zip from recovery).

In my case, as soon as I flashed recovery (either CWM or TWRP, any version) the capacitive buttons started failing, and would work intermittently, then after a small period (around 3-5 minutes) they would begin functioning normally.
 

nghiroshi

New member
Nov 13, 2013
2
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0
Did not work for me, there are no such paths:

/sys/devices/platform/i2c-gpio.7/i2c-7/7-0020/leds/button-backlight/ /sys/class/leds/button-backlight/
 

JuanDarien

New member
Dec 11, 2013
3
1
0
CM 11 - 10-12-13 - also problematic

i've tried fresh install 4 times already (or what i think its a fresh install, im very new at this), with the stock room works, but with the last release of CM 11 from Maclaw (from today, 10/12/2013) does not work at all.

the ROM is the best i`ve seen, but the capacitive buttons dont work and im gettin desperate! i dont know what to do!

has anybody found a solution?


Thanks!! a lot !


From Argentina!
 
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irufun

Member
Oct 27, 2012
17
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Jakarta
i've tried fresh install 4 times already (or what i think its a fresh install, im very new at this), with the stock room works, but with the last release of CM 11 from Maclaw (from today, 10/12/2013) does not work at all.

the ROM is the best i`ve seen, but the capacitive buttons dont work and im gettin desperate! i dont know what to do!

has anybody found a solution?


Thanks!! a lot !


From Argentina!
you can edit build prop to use screen button
 

JuanDarien

New member
Dec 11, 2013
3
1
0
Genius!!!!

its not the best solution ever, i would like to use the softkeys, but its better than been unable to go back on a web page!

you are great, thanks!