Develop Bugs

[Q] Camera not working

Hey,
I know there are a few threads on this but I haven't found one that followed through to a reported solution.
G2 rooted with CyanogenMod 6.1.1 since January of this year. Tried google goggles and the app locked up. I finally realized that was because the camera has stopped responding. When I pressed on the camera help, nothing changes for a few seconds, then it goes to a black screen. Eventually, (pressing on the back key helps) I'll get a force close/wait screen. Camera had been working fine the previous day.
I've tried clearing caches, using a different SD card with no changes. Used the opportunity to finally upgrade to CyanogenMod 7.0.3 and cleared all the caches as part of the flash. Tried the camera the first chance I could get the phone to that point. Same response from the camera (hesitate, black screen, force close).
So, is there anything else to try or is this a hardware camera failure?
Thanks for any help.

Try flashing some other rom. If that fails, then try flashing another radio.
I'd suggest taking a rooted stock rom and a stock radio just to be sure.

Thanks, but I'm trying to understand what any of that would do to fix the camera over what I've already tried.
I guess I'm looking for anyone that actually had a similar problem and either fixed it or failed to fix it.
Thanks.

Well for once the stock rom uses HTCcamera.apk to open the cam. Since you are using CM7 its a completely different apk.
Radio is somethign that is responsible for almost every device on your phone. Then the drivers that are in the Kernel, and then the ROM which has the apk, that uses the driver from the kernel to start the camera that is defined in the radio.

Well, nothing worked. Unrooted and back to stock (camera still doesn't work). Replacement phone is on it's way.

MIUI problem

I have a problem with MIUI rom. Some days ago, my phone suddenly had FC, now, my phone run really slow and laggy... If I turn off the screen, my phone won't wake up, only four button in the bottom light up.
I wiped everything in CMW (system,data, and cache, also sd-card) but it doesn't work.
The fresh install had the same issues
I have this problem only with MIUI rom
any help

You probably need to provide more info on the issue. What version of MIUI are you running? Have you tried a fresh download of the ROM?

zandroid said:
You probably need to provide more info on the issue. What version of MIUI are you running? Have you tried a fresh download of the ROM?
Click to expand...
Click to collapse
i have tried from 1.8.5 to 1.9.2.
it's very weird
this guy has the same problem with me, maybe he can explain better than me
http://forums.miui.us/showthread.php?3740-Display-won-t-wake-from-sleep
Hey guys, I flashed 1.819 yesterday and everything was going great. The ROM ran smoothly and I was having no issues at all. When I woke up the next morning my display would not turn back on. Every time I tried to turn on the display the soft lights would light up but the display remained unresponsive. The phone still seemed functional as I could hear e-mail and sms notifications coming through.
When I rebooted my phone it was abnormally slow.. mounting the sd card and syncing seemed like it was taking forever and the launcher was very jittery.. if I let my display time out it would not come back on and I'd be forced to pull the battery and try again.
I performed a full wipe through clockwork recovery (everything, including wiping system,data, and cache in 'mounts and usb') and reinstalled 1.819. The fresh install had the same issues.. if I let my display time out I wouldn't be able to turn it back on. I thought I was having some wonky hardware issue but after flashing my previous sense rom and everything is working perfectly.. so I'm pretty much scratching my head here. My phone was kickass for one day and became allergic to MIUI overnight!
Click to expand...
Click to collapse

Have you tried using a different kernal such as Tiamat or JD's Kernal?
May want to try that. I had good luck with Miui and Tiamat (ran it for a week)

PacerguyDon said:
Have you tried using a different kernal such as Tiamat or JD's Kernal?
May want to try that. I had good luck with Miui and Tiamat (ran it for a week)
Click to expand...
Click to collapse
i have tried both

Does this happen immediately after you flash? Or are you installing applications to get back to your preferred setup and then seeing the performance problems?
If it's the latter, I'd run the rom alone and see if it runs normally. Then install your applications individually until you encounter issues.

ttupa said:
Does this happen immediately after you flash? Or are you installing applications to get back to your preferred setup and then seeing the performance problems?
If it's the latter, I'd run the rom alone and see if it runs normally. Then install your applications individually until you encounter issues.
Click to expand...
Click to collapse
immediately after the flash. I don't install any other apps

since we are talking about MIUI issues. I am running the latest version of MIUI with the JDKernal.
The camera has color distortion lines when I take a picture. The picture comes out fine but when taking it the image shows the distortion. It did not do that before so I can only assume its something with the camera in the ROM.
Anyone else see this?

spiderj said:
since we are talking about MIUI issues. I am running the latest version of MIUI with the JDKernal.
The camera has color distortion lines when I take a picture. The picture comes out fine but when taking it the image shows the distortion. It did not do that before so I can only assume its something with the camera in the ROM.
Anyone else see this?
Click to expand...
Click to collapse
Try different kernel
Sent from my Incredible 2 3D using XDA App

tenchu_712 said:
immediately after the flash. I don't install any other apps
Click to expand...
Click to collapse
tenchu, your signature says you are not English or American. Are you running the MIUI.us ROM on your incredible 2 in English - and not another language?
.....just a thought.

[Q] Need to downgrade, how?

Greetings, I wonder if somebody can solve the following problem. I'm from Venezuela and I bought this model GT-I9192 in December 2013 when the update came out this year it was updated from 4.2.2 (JellyBean) to 4.4.2 (KitKat). I almost never use the camera of this phone and then I noticed that every time I opened the camera app I would get "Warning: Camera Failed". Thinking it was the update I proceeded to install the Cyanogenmod rom 11 for this model, but continued with the same problem. The flash works every time I turn the flashlight application. I took it to a technician telling me that the problem was not hardware but software. This is where my troubles began. I do not remember which firmware was installed. I tried to install several firmwares 4.2.2. but without success all with flashing failures. However, I could install version 4.4.2 of Trinidad and Tobago but with the same camera error. Hopefully someone can help me with this problem. I would like to know exactly what firmware should download to install? Thank you very much.

nelson2006 said:
Greetings, I wonder if somebody can solve the following problem. I'm from Venezuela and I bought this model GT-I9192 in December 2013 when the update came out this year it was updated from 4.2.2 (JellyBean) to 4.4.2 (KitKat). I almost never use the camera of this phone and then I noticed that every time I opened the camera app I would get "Warning: Camera Failed". Thinking it was the update I proceeded to install the Cyanogenmod rom 11 for this model, but continued with the same problem. The flash works every time I turn the flashlight application. I took it to a technician telling me that the problem was not hardware but software. This is where my troubles began. I do not remember which firmware was installed. I tried to install several firmwares 4.2.2. but without success all with flashing failures. However, I could install version 4.4.2 of Trinidad and Tobago but with the same camera error. Hopefully someone can help me with this problem. I would like to know exactly what firmware should download to install? Thank you very much.
Click to expand...
Click to collapse
I registered here just to answer your question.
My Android expertise is very limited but I try to learn from past experience. If I understand correctly, your want:
1. the camera should work.
2. the phone should function properly.
If you do not remember your original firmware, do not worry as it does not matter. Once your upgraded to KK, Knox (google it) kicked in to prevent you from downgrading to JB. That's why all flashing efforts to downgrade failed. So, you can keep your phone with KK if the phone works except camera. In case you want to downgrade to JB, I am sure that able XDA members can help you with that. I am unaware if such methods exist.
Now, to see if the camera works there are several methods. I encountered the same problem with my wives i727 Skyrocket which has JB 4.1.2 installed. One day the camera suddenly failed with the error "Warning: Camera Failed". The flash-light worked flawlessly so I was a bit perplexed. I researched and found several remedies:
1. From application manager, clear cache/data of the camera app and restart phone - Tried this several times, did not work.
2. Perform factory reset- Thought I'd use it as a last resort as the phone had gigs of data in it.
3. Uninstall apps (last installed app uninstalled first and so on) - I uninstalled the last installed app and restarted the phone. Voila! The camera was back. I have no explanations why but it just worked.
Let us know how it goes, good luck!

On the i9195, it is possible and easy to downgrade to JB since there's a 4.2.2 firmware which is similar to the 4.4.2 firmwares, but I don't know about the i9192.
Be careful with this;
If you know what you are doing, get the CWM recovery, format system/data and flash a 4.4.2 firmware again. If that didn't fix it, I suspect that it's a hardware problem and it's having problems with the software, but there should be something wrong with the hardware, for sure.
Good Luck.

snipar said:
I registered here just to answer your question.
My Android expertise is very limited but I try to learn from past experience. If I understand correctly, your want:
1. the camera should work.
2. the phone should function properly.
If you do not remember your original firmware, do not worry as it does not matter. Once your upgraded to KK, Knox (google it) kicked in to prevent you from downgrading to JB. That's why all flashing efforts to downgrade failed. So, you can keep your phone with KK if the phone works except camera. In case you want to downgrade to JB, I am sure that able XDA members can help you with that. I am unaware if such methods exist.
Now, to see if the camera works there are several methods. I encountered the same problem with my wives i727 Skyrocket which has JB 4.1.2 installed. One day the camera suddenly failed with the error "Warning: Camera Failed". The flash-light worked flawlessly so I was a bit perplexed. I researched and found several remedies:
1. From application manager, clear cache/data of the camera app and restart phone - Tried this several times, did not work.
2. Perform factory reset- Thought I'd use it as a last resort as the phone had gigs of data in it.
3. Uninstall apps (last installed app uninstalled first and so on) - I uninstalled the last installed app and restarted the phone. Voila! The camera was back. I have no explanations why but it just worked.
Let us know how it goes, good luck!
Click to expand...
Click to collapse
I haved tried the first two steps and no luck at all. Maybe this weekend I'll try the third one. Thank you for the reply.

snipar said:
I registered here just to answer your question.
My Android expertise is very limited but I try to learn from past experience. If I understand correctly, your want:
1. the camera should work.
2. the phone should function properly.
If you do not remember your original firmware, do not worry as it does not matter. Once your upgraded to KK, Knox (google it) kicked in to prevent you from downgrading to JB. That's why all flashing efforts to downgrade failed. So, you can keep your phone with KK if the phone works except camera. In case you want to downgrade to JB, I am sure that able XDA members can help you with that. I am unaware if such methods exist.
Now, to see if the camera works there are several methods. I encountered the same problem with my wives i727 Skyrocket which has JB 4.1.2 installed. One day the camera suddenly failed with the error "Warning: Camera Failed". The flash-light worked flawlessly so I was a bit perplexed. I researched and found several remedies:
1. From application manager, clear cache/data of the camera app and restart phone - Tried this several times, did not work.
2. Perform factory reset- Thought I'd use it as a last resort as the phone had gigs of data in it.
3. Uninstall apps (last installed app uninstalled first and so on) - I uninstalled the last installed app and restarted the phone. Voila! The camera was back. I have no explanations why but it just worked.
Let us know how it goes, good luck!
Click to expand...
Click to collapse
RoyaLKurTx3 said:
On the i9195, it is possible and easy to downgrade to JB since there's a 4.2.2 firmware which is similar to the 4.4.2 firmwares, but I don't know about the i9192.
Be careful with this;
If you know what you are doing, get the CWM recovery, format system/data and flash a 4.4.2 firmware again. If that didn't fix it, I suspect that it's a hardware problem and it's having problems with the software, but there should be something wrong with the hardware, for sure.
Good Luck.
Click to expand...
Click to collapse
Tried that too and nothing. I also suspect that the problem is a hardware issue. Thank you for the reply.

nelson2006 said:
Tried that too and nothing. I also suspect that the problem is a hardware issue. Thank you for the reply.
Click to expand...
Click to collapse
The problem, in fact is a fault in the hardware problem. If it's still under warranty, request a new phone.

[Q] Camera Crash after Original Update to 4.4.2

Hello,
I have updated my GT-i9192 to various KK roms (Russia, Brazil...) and I still get hard camera crashes when I try to use the camera.
I have also try using Google's own Camera app, but this is still a problem.
I have also wiped the cache and reset to factory, still no go. I sometime get a 'Camera Fail' window, or the phone reboots directly. I am trying to avoid tripping Knox, so CM and others are out of the question (especially if it does end up being a hardware issue...!) even though I have no reason to think that the camera stopped working in-between updates - nor do I want to revert to 4.2.2.
Any hints welcome, this is annoying as hell.
TIA

tareumlaneuchie said:
Hello,
I have updated my GT-i9192 to various KK roms (Russia, Brazil...) and I still get hard camera crashes when I try to use the camera.
I have also try using Google's own Camera app, but this is still a problem.
I have also wiped the cache and reset to factory, still no go. I sometime get a 'Camera Fail' window, or the phone reboots directly. I am trying to avoid tripping Knox, so CM and others are out of the question (especially if it does end up being a hardware issue...!) even though I have no reason to think that the camera stopped working in-between updates - nor do I want to revert to 4.2.2.
Any hints welcome, this is annoying as hell.
TIA
Click to expand...
Click to collapse
try to clear the camera cache and data, but first force close it. after you do this, reboot.
also delete everything from \Phone\Android\data\com.sec.android.gallery3d\cache

Nope
Unfortunately, that did not work...
I am going to try to upgrade to CM 11 and hope that it will resolve my problems.

tareumlaneuchie said:
Unfortunately, that did not work...
I am going to try to upgrade to CM 11 and hope that it will resolve my problems.
Click to expand...
Click to collapse
Upgraded to CM 11 did not fix my problem, I ordered replacement cameras (both) from ebay and the problem is still there.
Seems like a motherboard issue.

Question Soft Reboots After Every Reboot [SOLVED]

EDIT: Apparently this was a result of using the wrong setting for enabling hotspot in PropsConfig. Because all that stuff was set during bootup, deleting apps wouldn't change the situation. Setting worked fine on my Pixel XL, but not here. Changed the setting and all is well.
--------------------------
So, this is a weird issue I was curious about and may have missed on my searching. Every time I reboot the phone, when I got to log in it immediately follows up with a soft reboot. It's been happening for a while, and I'm not sure the source of the issue.
Running stock 12 ROM and rooted, but I disabled SU, modules, and Nova and am still running into the issue.

Might be quicker and easier to back up your required files and just factory reset.

Texan1 said:
Might be quicker and easier to back up your required files and just factory reset.
Click to expand...
Click to collapse
*sigh* I kinda made this post to avoid that step.

somethingsomethingroot said:
*sigh* I kinda made this post to avoid that step.
Click to expand...
Click to collapse
I know, it's just that it sounds like you've already disabled some things that could be causing it, which hasn't helped. If it was me, with something like constant reboots, I'd want to start fresh just to make sure they are eliminated for good

somethingsomethingroot said:
So, this is a weird issue I was curious about and may have missed on my searching. Every time I reboot the phone, when I got to log in it immediately follows up with a soft reboot. It's been happening for a while, and I'm not sure the source of the issue.
Running stock 12 ROM and rooted, but I disabled SU, modules, and Nova and am still running into the issue.
Click to expand...
Click to collapse
I've seen reports of "random" (=not intentional) reboots after
+ booting up the phone
+ using the FP scanner
+ making videos or shooting photo
+ doing a firmware update (I've seen both reports of ppl that "officially" OTAed & used manual flashing)
+ doing nothing
+ doing something
Some were able to fix their issues by factory resetting, some needed replacement devices. Some reported that even after a factory reset, the issue still persisted, but they were able to fix it by NOT using a backup via cable, some reported that even the Google Drive backup "corrupted" their phone (fix after setting up everything by hand from scratch). Some even reported their issues to get fixed via a software update.
So it seems to be connected to hardware (= replacement device) and/or software simultaneously (=fix via reset).
Strange this is since there are also numerous reports of Samsung owners that upgraded to A12 about random reboots. So it might even be something Android 12 related, or it's just Samsung also implementing similar bugs without it being A12 related (unlikely, since the reports seem to be centered around people using the new A12 update).
I also had the random reboot problem (~ 6 times a day, when doing nothing, it just rebooted when the phone layed on the table in idle). I wasn't able to fix it via a reset, so I got a replacement device.
I also have the "random" reboot problem on my Pixel 3 since upgrading to Android 12 (never had any issues all the years I've been using that phone), so that issue is clearly caused by A12, but I haven't troubleshot it/ tried to solve it, since I don't actively use the phone currently.
Aside from trying a factory reset and minding the backup issue (especially backups that you got from phones that did NOT have Android 12), there is not much more that you can do (ofc you could also use the Pixel repair/android flash tool to do a "clean" install of Android on your phone). Next step would be to contact Google.