So I've experienced this just recently after having the phone for more than 2 years. I'm not sure if installing TWRP had anything to do with it but it started happening after that and reverting to stock everything won't fix it. The Menu and Back buttons (named Key 139 and 158 according to system/usr/keylayout/Generic.kl) are behaving in such a way that they don't function the way they're supposed to on the ROMs, yet they function/register input correctly on recovery, whether it's TWRP or CWM.
Example of strange behaviour on Stock ROM:
The Back button would not function if pressed or hold, this is verified by the button's inability to light up alongside the menu button.
I would tap the Menu button but the phone will think the Menu button will be held for an infinitely long amount of time. This is verified by the phone having the light for both buttons always on (even though I have it set to be lit up for only 1.5 seconds) as well as the phone taking me to S Search even though I only tapped the button.
It will stay held down until I press the back button, in which the phone will now think the home button is no longer being held down.
I'm really not sure what could possibly be causing this. I tried looking at the Generic.kl file and editing it to swap the back and menu buttons, and it'll still behave the same way (but reversed due to reverse button mapping). I tried reflashing the stock ROMs using Odin and TWRP but to no avail, and I personally don't want to resort to using custom ROMs for random yet very specific reasons.
I do admit that at the time of writing, I did not use the search function to check for threads/posts explaining similar nature (and I do apologize). However, I did use google to search for possible solutions but it seems no one has gone through the same situation that I have.
Any help would be greatly appreciated!
Following up on this issue, I tried installing a custom ROM (Phronesis) and the keys ended up working but as great of a ROM Phronesis is, I'd much rather stick with stock.
Strangely enough, I also tried reverting back to stock 4.4.2 and the keys also worked. It's very strange that suddenly flashing back to stock lollipop TW causes the keys to just not function correctly.
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ok i have a mogul 6800 and have not used my hard buttons for some time now. the scroll wheel works, round nav. button and power button. nothing else works while normal use. but heres what i dont understand, i can still hard reset my phone, and also put it in bootloader mode. but under normal circumstances they do not work. can some one help. i have taken it completely apart to see if by some chance something come lose, but nothing. also have tried a stock rom, several custom roms,and still get the same out come. is there a hardware upgrade by chance that might restore button function .
anybody?
not even a little help? something?
Wish someone smarter than I could help us out on this because mine is doing the same exact thing.
At first, I thought maybe the chip that worked those buttons failed but they work...for some things?? An example is my camera button will not open the camera but when I hold it and the power button and press reset, it will go to bootloader. My softkeys do not select and start the assigned program but when I hold both softkeys and press reset, I will do a hard reset.
I have tried reflashing my DCD 3.2.6 ROM, as well as several other DCD ROMs and Ryan's ROMs but the problem persists.
Hi folks
even if the nifty little "similar threads" thingy came up with some matches, none of them deals with the issue on the HD2, and searching the threads didnt yield results either (unless i am asking the wrong questions that is...)
My problem: Flashing ROMs was a bit of a hassle but in the end i got a working android running on my HD2. But the issue is the the hardware keys seem to act up:
The call key (leftmost) seems to be the home key but also decreases the volume at the same time.
The home key is also the home key, but doesnt do anything to the volume.
The Windows Key SHOULD be the menu key, but brings me back home instead and increases the volume. In some apps (browser) it BRINGS up the menu, but also increases the volume.
The back key and the endcall key both work as expected (surprise)
This happend on the stock desire NAND i used before and on the ROM i use right now (cant remember the name, phone not here)
I already tried to get results with the keynrchecker provided with buttonremapper, but it comes back with several results per keypress (confusing).
right now i workaround with button savior, but i'd rather like to have the keys work as expected...
Does anyone have a clue as to whats going wrong?
Have a nice day
rambuster
My soft keys are acting weird. sometimes when i press the home button right after a boot, it captures screen, meaning the 'menu' soft key is depressed. However, after that the softkeys don't respond anymore.
Also, sometimes while powering on, the Galaxy boots up in 'safe mode', meaning again that the 'menu' button is depressed (the way to enter safe mode is by pressing the menu button with the power button).
I have checked the key map in the clockwork recovery which show the 'menu' & 'back' key responding only once before going dead.
During general operation, the softkeys don't work at all and i'm left with only the home button.
Since the keys respond once, i'm sure they're not broken. Seems like a software error. I have tried different kernels & 3 diff roms, but the situation is the same.
Any help to ascertain / solve the problem will be appreciated
Similar issue
I had a similar issue on a brand new phone, the soft keys would detect my finger from about 1cm away, so holding the phone and moving you grip would cause them to activate, eventually they would lock up until you locked the screen and tried again. It was totally a hardware issue, I replaced the phone used the same ROM and no issues.
the reason i'm convinced its not a hardware fault is that the keys 'blink' when i touch them which means they are registering touch. its got to be something else.
the Galaxy has got to be the most mysterious device ever!
Sounds like you ought to send it in for a replacement.
You can try a touchkey firmware update.
Make sure you're on your device's stock ROM otherwise you'll lose your touchkeys.
ENTER *#*#2663#*#* in the dialer. Then update the touchkey firmware and reboot.
You should be able to return to your other ROM after this.
Sent from my GT-I9000 using XDA App
I just bought a used hd2 yesterday, and it came with magldr with ultimate droid rom 3.3. I found out that none of the physical button acts as a Menu and Back button which makes navigation and menu access very hard. I even changed roms but still same thingn
My question is, is hd2 don't map physical keys as menu and back? Or is my unit actually defective? All the buttons work though, only that the Window and Home button does the same thing while Back and End button turns off the screen.
Thanks in advance!
Update: I have manage to get the menu (window) button working, but the back button is more trickier.. it seems thatt the physical button is actually pressing other keys.. in this case when I pressed the Window button for menu.. it will actually press the Home button which will bring me back to home screen. And for the back button, its actually pressing the End button, although I did manage to get it to press its back button, but its quite difficult. Does anyone knows how to fix this?
reply back button
I think that u may have a faulty back button or that dirt got under it thefe are guides on here xda that show u how to fix back button etc but it requires you taking phone apart and you need to read guides totally and follow steps there are also guides on youtube as well. It also sounds that the buttons might have been remapped there is an app called button remapper that allows you to change what the physical buttons do like the phone button back button etc do in other words you can change what every physical button on your hd2 does like for example the volume keys you would be able to change to back button etc. Read about button remapper on google before attempting to use app hope this helps you.
That's a common issue in the HD2, probably your device is defective.
Don't bother with the warranty, replacement and all that stuff since the back and menu aren't required for flashing or entering bootloader mode.
Just download "zMooth" app from market. (Pro version will give you End & Search)
I would prefer fixing the physical keys as they are important functions that is required in order to navigate around. Any links to how to fix the buttons? I think they are just misaligned because of prolong usage. Because multiple tries proves that it can still work.
Update: I have seen the official tutorial video for disassmbling the HD2, to just replace the keypad flex ribbon requires one to go very deep inside the phone before you can actually access the flex ribbon for the keypad. Now i am thinking twice to repair the physical button, let alone give an unofficial service guy to replace it.
@Marvlesz
I have installed zMooth, nice app.. but take some time getting used to. thanks!
or you can try a cm7 rom and use the tablet tweak soft keys in the options.
u can use button savior to replace all buttons .. it's a must have for me ..
Does anyone know if physical button problem such as mine are caused by the wear and tear of the flex cable or is it because of the plastic buttons itself?
As the title says, is there any way to set the function of, let say, the back key or the search key to wake the screen?
I know that the ICS port has this function natively but i'm using stock.
i tried Button Remapper and NoLock without success.
any ideas?
note: the reason being is that i need to replace the camera pcb since the power is busted.
it works.... if i pressed on the button with extreme force (yes, i've attempted to rectify the issue myself, but screwed up to the point where i can't undo and fix.)
SOLVED: I edited key 248 (rotation key) with "POWER WAKE".
so now that key can turn off the tablet or wake it.
Makes things with tablet much more bearable until i get the front camera pcb ]replaced.