yashsingh1/xdaforums huggingface dataset:
[Xperia Z2 Q&A, Help & Troubleshooting] Hossam.Abdelsalam:
Folks,

[Update] This is a possible fix for the dedicated camera button as below:

1-The symptoms i had before:

this is my second month with my 4th Xperia Z2, as the last 3 had all possible defects you can ever imagine, anyway, i recently noticed that the dedicated camera button has some sort of a problem, it launches the camera app perfectly then it doesn't respond at all, i keep pressing it like crazy with no luck to capture the shot.

the weird thing is it works perfectly with any other camera app from the market, and it sometimes works with the official camera app after like 1 minute of waiting or maybe randomly, i don't really know, then after i capture the photo it stops responding again for a minute or so.

what do you think guys?

i'm on .314 FW

tried a factory reset, tried uninstalling all other 3rd party camera apps with no luck

2- The Fix

i've tried removing all 3rd party camera apps with no luck, tried the factory reset and then the PC Companion repair with no luck as well.

googled it but no one is talking about it, even here, i didn't find a real fix which made me really nervous about it as this is my 4th Z2, here is what i did.

A- I pressed it very hard for like 10 times as i was really nervous coz there are no fix

B- while pressing and releasing i felt that sometimes it get released for the 2 clicks, the shutter click then the focus click

C- I started sensing when it get released for just the shutter click then stopes and when it get released for the 2 clicks

D- bought an AKAI electronic spray and sprayed the button several times while keep pressing and releasing it hundreds of times till it stopped the faulty 1 release and it became most of the times releasing the 2 clicks

3- The conclusion:

when the official app launches while the focus click not released the button will not function at all, and when it launches while the 2 clicks are released everything will be perfect

Hope this help you folks as i'm sure there will be lots of you guys with this problem without a fix for it (as most of Xperia Z2 devices has their defects) for me only I've replaced 3 devices and this is the 4th one :D
[Xperia Z2 Q&A, Help & Troubleshooting] Envious_Data:
how did you factory reset?

perhaps try repairing your device via Sony Pc companion. if your problem peesists try contacting sony support and get a device repair as this should be covered by your 2 year warrenty that sony gives with all xperias.

you do need proof of purchase for this
[Xperia Z2 Q&A, Help & Troubleshooting] Hossam.Abdelsalam:
thanks for the reply man,

but what is the difference between the factory reset and the PC Companion repair? i think both of them are doing the same job, correct me if i'm wrong.

also please i need more clarifications for the 2 years warranty, and does this need to be shipped to the country i bought it from or any Sony branch can handle this?
[Xperia Z2 Q&A, Help & Troubleshooting] Envious_Data:
no. factory reset just resets the user data, sony PC companion repair, reinstalls the entire OS, hence removing any problems with your current System.

and for warrenty, all xperia devices have a 2 year warrenty if you have proof of purchase. (emails,reciepts,cell contract.. etc)

all faults with the device which are not caused by the owner, sony will repair as this is a Device fault. this is covered by warrenty
[Xperia Z2 Q&A, Help & Troubleshooting] CodeNameRedNeck:
As I posted in this thread

http://xdaforums.com/xperia-z2/help/shutter-button-doesnt-official-camera-t2827868

It wasn't always third party camera apps that made mine quit working but that there is also one of my cases that makes my camera button quit working.
[Xperia Z2 Q&A, Help & Troubleshooting] Hossam.Abdelsalam:
I found a fix, please check the 1st post update

I found a fix, please check the 1st post update
[Xperia Z2 Q&A, Help & Troubleshooting] CodeNameRedNeck:
I am glad you got it working right!
[Xperia Z2 Q&A, Help & Troubleshooting] Drachy1990:
I was having the same issue just now, and having read the OP I pressed mine camera button quite hard repeatedly very fast and it came free and began working properly.

It seems that the button just gets stuck halfway in after a while. Mine too was launching the camera but then doing nothing else. What is this electronics spray?
[Xperia Z2 Q&A, Help & Troubleshooting] pec0ra:
I had the same problem when a friend of mine used my phone after eating a burger.

Instead of using a spray I just washed my phone with water and soap and now it's working without any problem.
[Xperia Z2 Q&A, Help & Troubleshooting] fritz912013:
camera button fixed

yeheeeyyyyyyyy........ Thanks for this information you shared about how to fix the camera button. Mine is now VERY WORKING PROPERLY... Im happy and not bothered anymore. GOD BLESS US ALL.
[Xperia Z2 Q&A, Help & Troubleshooting] Nyokenz:
Can you help me my problem is the same camera button not working how can you fix this one?
[Android General] PhillipAmal:
Have anyone tried it?
[Android General] SurrendeR1993:
Failed while do the step with the lun0/file.

Permission denied
[Android General] yogi77:
Quite interesting :good: and works as expected with lun/file :o
[Android General] intika:
Thanks for this amazing post :)

great :)

command done for E300K over Wifi adb

while system running normally :)

working great :) thanks

echo /dev/block/mmcblk0p20 > /sys/devices/virtual/android_usb/android0/f_mass_storage/lun0/file
echo 0 > /sys/devices/virtual/android_usb/android0/enable
echo "mass_storage,adb" > /sys/devices/virtual/android_usb/android0/functions
echo 1 > /sys/devices/virtual/android_usb/android0/enable

---------- Post added at 05:10 AM ---------- Previous post was at 05:08 AM ----------

wondering how we could mount many partition at the same time

will see

Edit : seems to be related to the module that provide mass storage gadget, it's set to 1 emulation for the moment... i think i have to recompile that stuff and/or the kernel to have this feature... any way not for now ^^

Note : an alternative to check deleted files is R-Studio :) work well
[Android General] at41man:
Some Hint Please?

Hello sir, I want to ask you. :confused:

What recovery version do you use? Philz Touch? TWRP or another? can you please help me.? I am using Galaxy Note II device (GT-N7100)

When I am using TWRP recovery I can do all steps you provide but no luck. Then I am try using Philz Touch, adb shell is error, Device Not Found.

What can I do? Can you please help me? :good:

I need to recover some photos that I accidentally deleted.
[Android General] billqu:
Hi Sean,

This is a great idea!!! I've been struggling for the past two weeks to recover data from my HTC One M7 ever since I accidentally hit the factory reset button!:crying:

I got a few questions...

Does this method work on my M7 which has only the internal memory and no SD card?

IIf I'm trying this directly on a terminal window on he phone, how would the last command change?

Also, once done, how do we mount /data back?

Sorry for the noob questions! :(

Thanks a lot!
[Android General] billqu:
No response from HTC One M7

Hello Experts,

I tried the above mentioned method on my HTC One M7. It was lun0 in my case. I have unmounted /data. However, I still found that mmcblkp037 that was mounted on /data was still linked to /sdcard for some reason. I proceeded to unmount /sdcard too. (There is no SD card in my device btw).

After unmounting both /data and /sdcard, I proceeded to edit the lun0/file and then the long command all in one go. Unfortunately nothing happens, the adb shell remains active and I do not see a USB device appearing on My Computer. I've added the snapshots from the terminal window.

Can someone please help?:crying:

Thanks!!!
[Android General] Jrbourque:
So i am trying to run this so that i can do a photo recovery on the internal storage. At first i wasn't getting the list of mmcblk0p and what they were assigned to. I found a different command that I think returns the correct information ( mmcblk0p26) when i make it to the end, it mounts it on my pc as the cd rom drive, but i cant do anything with it and it doesnt show up in my recovery program. I ran the command again and i got ( mmcblk0p26-orig) but again at the end, i still only have the cd rom that it mounts. im not sure if im not pointing to the correct mmcblk or what im missing. Any help is appreciated.
[Android General] Jrbourque:
anyone?
[Android General] MBÄ:
Issues with step 4 umount

Hi together,

I have issues by proceeding step 4. "umount /data" it all the times says: "umount: bad /etc/fstab: No such file or directory"

I tried so many things to solve it.

Could you please help me?
[Android General] Probal Basak:
I am unable to switch to mass_storage on my Moto G 2013.

I tried with DriveDriod Android App and it successfully enabled mass_storage but I am unable toreplicate the same manually.

This is what I tried:

No luck in mounting the partition as UMS.

Please Help.

Thanks.
[Android General] psychem:
[MENTION=2036977]CleverCoder[/MENTION] im trying this on a OneplusX but it ends up showing as unallocated space in gparted. Any clue?
[Android General] seliver:
All worked fine with a bq aquaris a4.5.
[Android General] lebigmac:
Why can't I unmount the /data partition?

Any hints please?
[Android General] osrl:
Can you tell me how to disable mass_storage again? revert everything back?
[Android General] mirfatif:
"sysfs" is a volatile filesystem. Everything is reset on reboot. Or you may revert changes manually:

echo 0 >/sys/class/android_usb/android0/enable
echo "" >/sys/class/android_usb/android0/f_mass_storage/lun/file
setprop persist.sys.usb.config adb
setprop sys.usb.config adb
echo 1 >/sys/class/android_usb/android0/enable
[Android General] eyewee:
honor 9 error lun

Hello, On my Honor 9 I'm trying to do the same but I'm stuck on

because this command gives no lines found, it seems that I don't have any directory with "lun" written in it, so I'm unable to continue the tutorial, what am I doing wrong?
[Android General] Freed-Wu:
i met this same problem. My phone is OPPO R15x PBCM.

i have ever installed an apk named UMS interface which can be downloaded from coolapk and found its code in github . this apk can allow root user create an image in their sdcard and mount it as a usb device or mount an external sd card as a usb device. the latter is like ums enabler .

it work normally, until i reinstalled OS of my phone. then it always return Mass storage Unit is not ready. i take a glance at the code of the apk, and found this warning exist only when /sys/devices/virtual/android_usb/android0/f_mass_storage/lun doesn't exist. exactly, /sys/devices/virtual/android_usb/android0/f_mass_storage/ doesn't exist. when i ls /sys/devices/virtual/android_usb/android0, it only return f_audio_source f_midi power state subsystem uevent, not

f_mass_storage

. no matter i reinstalled OS for many times, nothing become normal.

grep f_mass_storage /init.usb.rc

will return

chown system system /sys/class/android_usb/android0/f_mass_storage/lun/file
chmod 0660 /sys/class/android_usb/android0/f_mass_storage/lun/file

, but i don't know its meaning. i don't have enough knowledge about android.

thanks anyone for help!
[Android General] mirfatif:
@Freed-Wu new devices use configfs instead of Android Composite Gadget driver: https://android.stackexchange.com/a/205559/218526
[Verizon LG G2] jkjambo:
So long story short:

when i downgrade my phone to 4.2.2 , phone is not stable at all , it only works 20-30 seconds and then it restarts .

i tried both tot and kdz method , also did factory reset . but still same . phone only works on kitkat : official 24A/25A(newest firmware) , or some custom roms on kitkat . but JB doesn't work anymore .

some time ago it worked , but for now it doesn't .

So what should i do? i can't understand what's problem . should i try to do that on other computer or with other usb or whatever?

I need downgrade, because my cell radio is off on kitkat and i'm not getting signal at all , radio is disabled (can't figure out whats wrong with this)

maybe i have some hardware problem and it's not software?
[Sony Xperia Z Ultra] id7771:
Is it possible to flash 757 stock kernels on 108 stock ROM?

I am kinda afraid of trying it since I am a newbie on ZU.

If hard-brick/soft-brick occurs on ZU when flashing 757 kernel on 108 ROM, I will be dead. :crying:

Please let me know your experience with 108 ROM with 757 kernel.
[Sony Xperia Z Ultra] Jammol:
It will not boot. 757 needs 757 kernel. 108 needs 108 kernel.
[Google Chromecast] nappster:
First sorry for my bad English !

I have now make a fresh install of my PC, then i installe Videostream for Chromecast and Chrome Remote Desktop and both work fine.

Now the Question :

When i want to play a MKV Video my PC have no Codec !!!

But when i want to stream to chromecast the video works fine with sound !

Why Chromecast dont stream sound when is DTS over minidlna ?
[Google Chromecast] r-l:
Because android doesn't support dts
[Google Chromecast] nappster:
OK is my mistake ! i have ask the question false !

When my PC do not support DTS and MKV Files how can transcode my pc DTS or AVI files !

My PC transcode the sound of MKV to Chromcast compatibel.

When my pc doesnt support this files and chromeast doesnt support this files !!

HOW CAN TRANSCODE MY PC IT ????????????

I think chromecast support DTS and AVI Files but only when he will.

When you use google chrome ,Chromecast support every file, thats google it want is all possible
[Google Chromecast] peca89:
If your PCs default media player can't decode DTS it doesn't mean that other applications on the same PC can't. AFAIK, Videostream has all the transcoding libraries integrated into itself and it does not rely on system codecs, whether they are present or not. That means that Videostream can use it's internal DTS decoder, but your media player obviously can't use libraries from Videostream.
[Google Chromecast] nappster:
thanks that anser is really good and now i understand it why it works !
[Galaxy Note Pro 12.2 Q&A, Help & Troubleshooting] ejones915:
Have anyone successfully rooted the At&t version of the Note Pro 12.2 with Towelroot, and if so are you experiencing any issues? I want to know before I dive in.

Thank You.
[Galaxy Note Pro 12.2 Q&A, Help & Troubleshooting] torreon901:
Yes... no issues... download towelroot.apk install.. make it rain.. no reboot... then you download the super su apk and when you get to disable knox say yes.. if it doesnt do in few seconds restart tablet... open super su again and try again... for sure it happens on second attemp.
[Galaxy Note Pro 12.2 Q&A, Help & Troubleshooting] ejones915:
Thank You...Sir!
[P3600 General] nologin:
Does Trinity have an ATI display Chip as Hermes did? If not, which chip is inside Trinity?

Thanks.
[P3600 General] XenoV:
The chipset used in the Trinity (Qualcomm 6275) does contain a graphics processor, however based on the outcome of benchmarks (pre production models) we may assume that the graphics processor part is not active yet.

Follow the link for a more detailed description of the chipset.

http://translate.google.com/transla...&hl=fr&ie=UTF-8&oe=UTF-8&prev=/language_tools
[P3600 General] nologin:
Thanks for your answer.

As far as I know, Hermes also equipped with this chipset, but it seems the chipset has never been activated in hermes. I really wonder if the functionalities of Qualcomm 6275 would be activated in Trinity.

Would the processing power of samsung CPU (400Mhz) alone be able to decode MP4 video at 30fps?

Thanks again.
[P3600 General] RebelShadow:
It should as I am doing that on my Wizard using pocketDVD Studio and TCPMP player using the wizards 200Mhz. CPU. It gets choppy sometimes but only during intense scenes and lasts only for a second or 2. I think it is still watchible though. Hope this helps.
[Verizon LG G3] adam135486:
My Netflix audio has been out of sync since I first got my G3. My network is fine as Netflix works perfectly on PC, iOS devices, Chrome casts etc. The audio seems about 1 second behind the video. Anyone have a solution or have the same problem?
[Verizon LG G3] bobcat987:
I typically watch on my chromecast, but the few times I have watched on the phone everything has looked good. If you're running ART try switching back to Dalvik. Other than that, try the typical force stop/restart on the netflix app and then a full on reboot. If it's still laggy then I'm out of ideas.
[Verizon LG G3] adam135486:
Thanks for the suggestions. Unfortunately I've tried all or them. So far :(

I'll update if u get it fixed. (and yeah casting is fine for me with my phone because it isn't really my phone doing the playback but rather the actual chromecast)
[Verizon LG G3] kaizzer123:
I have been getting the same problem

Maybe its because the image quality is much better than on most other devices that its arriving slower than the audio? That's my best guess. Its not super annoying, the delay is small enough that if you don't pay attention to who is speaking then you cant really tell. But it is noticeable. And if there is a fix that would be awesome.
[Verizon LG G3] cjrivera04:
I have this problem too. Tried downgrading Netflix but no luck. Tried different Roms too and nothing. It's pretty annoying. Funny thing is I don't have these issues with video players or videos streaming from YouTube.
[Verizon LG G3] gotjazz:
Just found this thread researching this issue. Just got my G3 yesterday day. Everything is still on stock. Anyone notice if other video apps suffer the same problem? I ask because to me it feels like video generally looks a bit like overprocessed motion-interpolated modern tv sets. And if the g3 uses stuff like that it might be related...
[Nexus 5 Q&A, Help & Troubleshooting] Gino76ph:
Hiya.

I'm trying to replace my Galaxy S4 LTE with another phone with stock Android but with better overall performance. My next choice is the Nexus 5. Had one late last year but because of an "immature" OS i sold it. Now, with Android 4.4.4 i'd like to try it again. But, heard of issues after the release of 4.4.4 like:

1. Battery life now worse (and unpredictable) than before

2. Wifi & network disconnections issue

3. Slow auto-focus when taking shot

4. Weak/tinny speakers sound (which might be down to hardware problems which i don't know)

5. Screen multitouch issues

Is this all true or only for a minority? And do we even know if Google is actually listening or is aware of some if not all of these reported problems?

Please advice. Thanks.
[Nexus 5 Q&A, Help & Troubleshooting] psycho693:
I have updated and have none of the issues you mentioned I love my nexus 5. Stock or custom ROM.

And if people report these issues to google they listen unlike some other OEMS
[Nexus 5 Q&A, Help & Troubleshooting] simms22:
1. i see 5 hours screen on time every single day. battery life is about how you personally use a device, how you set it up, what apps you use, and very much your phone/data signal quality. its like that for any device, even an iphone. the way some people use it, and their signal quality, they will never see over 3 hours sot. the way others use it, they see closer to 6 hours sot. there is no such thing about having standards for how long your battery should last, as we all use our devices differently, and live in different areas with differing qualities of signals.

2. no issues here.

3. i love the nexus 5 camera!

4. ok, the speakers arent the loudest. there are some mods/apps that will help, but the speaker can be a little better.

5. thats the first time ive ever heard of such a thing, the nexus 5 does not have any touchscreen issues.

no matter what you buy, whatever device, there will always be a minority that complains. sometimes they complain about real issues, but many times the issues only in their heads.
[Nexus 5 Q&A, Help & Troubleshooting] Gino76ph:
Simms22...I don't know how you managed to take those photos but they look amazing. Any special settings you used? Where you using a stock Android 4.4.4 on the N5?

As i'm not into modding or rooting is there any app you can recommend in helping boost one'e Nexus 5 speakers? (I have heard some issues are caused by glue sticking out or spreading thru the speakers grill from inside which are fixed by sticking a needle into them. Is that even safe to do? Lol.)

Comparing the Nexus 5 with my current Galaxy S4 (with 4.4.2) albeit the 8MP camera and low-battery capacity the Nexus 5 do come out on top. The S4 has a higher (and longer) battery life but what i hate about the Samsung phone is the bloateware (i.e. Samsung's own apps) of which most of them apart from Galaxy apps i have disabled or turned of notifications).

I know discussing battery life is useless because its very subjective and depends on one's usage & circumstances. I usually use GSMArena and Versus in comparing two devices: specs, battery life, etc. What i would say is i work 8 hours a day. Most of the time i live and work in a "moderate to very good" 4G area which doesn't require wifi (which i think does drain battery albeit slowly). The only notifications i have is my Gmail, Twitter, Instagram, SMS messaging and Whatsapp. That's it. I make sure Sync, Location services (if its turned on it is set to Battery saving due to the nature of my work or the app i use), NFC, Wifi, Bluetooth and anything else is turned off. Anything i missed there?

Would a 2300mAh battery of the Nexus 5 be better than a 2600mAh of an S4? Surely the higher the number the better with everything turned off? Or would having a vanilla OS compensate for the low battery capacity and end up being better?

Does a battery-saving /RAM-optimising app help in improving the battery life (and performance) of the Nexus 5?

Please help.
[Nexus 5 Q&A, Help & Troubleshooting] spinninbsod:
While the speakers aren't good but software won't make them good battery life is bad on stock if you go to a custom ROM you get great battery life and most of Google's bugs are gone so yeah if you get one you might want to put a custom ROM on it

---------- Post added at 11:16 AM ---------- Previous post was at 11:09 AM ----------

Wow you have to tell me how you got your photos to look like that that's as good as my digital camera
[Nexus 5 Q&A, Help & Troubleshooting] simms22:
ive been taking and posting nexus images since the n1 first came out, day two. and daily, i post nexus photos on g+(thousands and thousands now, from all the different nexus)

theres a fine line when it comes to macros. if you cross that line, your photos start going out of focus. behind the line its easy to focus on, and right on that line youll take the best macros. find that line between in focus and too close(out of focus). also, i do not ever zoom. i take the shot in full, and crop it as i like it. if you zoom, you get no choice in how you want the overall image to appear. youll need proper lighting for macros, sunlight or flash, as typical room lighting isnt enough. oh, and when editing, do not over edit. if you edit it too much, it looks fake. if you want to edit, edit in small percentages. the n4 actually takes slightly closer macros, but the n5 macros look and feel more natural.

really, its just the difference between someone that has been using a manual camera, and setting all up manually, and someone that just points and clicks. im 43 now, been shooting photos since junior high school, always adjusting manually, and i used to develop my own film. but this is why i say the n5 has a great camera if you know how to use a camera, but as a point and click camera its not that great. but it will get better, google has added much new code to it and its app for when L comes officially, and after.

---------- Post added at 12:50 PM ---------- Previous post was at 12:39 PM ----------

viper4android is great for sound, but needs root.and the nexus 5 real volume booster app for all other sound but music, but need a custom recovery to flash.

the n5 has code in it that makes it more efficient on battery, so the 2300 battery sizecis fine. oh, and battery saving apps use battery, stay away from them.
[Nexus 5 Q&A, Help & Troubleshooting] bblzd:
Nexus 5 battery is smaller but the SoC and LCD are more efficient. S801 and S805 phones are even better now.