Develop Bugs

[Q] Scroll lags and stuttering with Android 4.4.2

Hello,
my Samsung Galaxy S4 mini stutters / lags when scrolling. This appears in every app, systems setting, when scrolling in a browser or a menu or just going through the home screens (original TouchWiz). But games are running smoothly and also videos / youtube are free from stuttering.
So this is not a very big problem, but its making the use of the device not as enjoyable as before. To be honest: Its really annoying.
Some information about the devices / firmwares history:
- Bought the device originally from a market (not branded by a service provider) with stock ROM and Android 4.2.2.
- Used the phone for some months in its original condition. Not rooted, not removed TouchWiz, no custom kernels, etc. Everything was fine.
- Some weeks before the phone offers me the update to Android 4.4.2. Update was executed without any problem. Still no stuttering.
- Because of the new permissions for SD-cards in 4.4.2 I rooted the phone with towelroot and used "NextApp SDFix". No stuttering, SD-card ok.
- For backup purposes I installed Titanium backup (after SuperSU and BusyBox). Everythings fine.
- But some days later, without a clear reason, the stuttering / lags occurs and is there since then. Rebooting does not help.
What I have tried:
- Removed all newly installed apps.
- Temporarily unrooted, temporarily removed SuperSU, temporarily removed BusyBox.
Nothing helped.
Then I had done a factory reset. The phone started up like a newly bought device with Android 4.4.2. But still with lags / stuttering when scrolling!
A question to all the Pro's here:
- Which information can I tell you about the phone to give you a better view of the problem?
- May it be a problem in the kernel - so that changing the kernel would help?
I am also thinking about installing CyanogenMod, but if not necessary I would like to avoid it. I am happy with the look and feel of the stock ROM (I am simply used to it) - apart from the stuttering.
Model: GT-I9195
Android version: 4.4.2
Kernel version: 3.4.0-1646188 / [email protected] #1 / Fri May 23 19:52:02 KST 2014
Build: KOT49H.I9195XXUCNE6
SE for Android Status: Enforcing / SEPF_GT-I9195_4.4.2_0016 / Fri May 23 19:52:40 2014
Secure boot status: Type: Samsung
Thank you for any help!

Have you tried to flash your currently installed firmware again with Odin so far?
Sent from my black pearl using Tapatalk

nunein said:
Have you tried to flash your currently installed firmware again with Odin so far?
Click to expand...
Click to collapse
No, I have not tried that. So you would suggest the following (just to be sure to understand you correctly):
- Do a full backup with Titanium backup (for example).
- Get the stock ROM containing the Samsung flavour of Android 4.4.2 for Galaxy S4 mini.
- Flashing the device with Odin.
- Rooting again with towelroot, installing SuperSU and BusyBox.
- Install Titanium backup and restore my apps and settings.
Is this right?

ontheair said:
No, I have not tried that. So you would suggest the following (just to be sure to understand you correctly):
- Do a full backup with Titanium backup (for example).
- Get the stock ROM containing the Samsung flavour of Android 4.4.2 for Galaxy S4 mini.
- Flashing the device with Odin.
- Rooting again with towelroot, installing SuperSU and BusyBox.
- Install Titanium backup and restore my apps and settings.
Is this right?
Click to expand...
Click to collapse
Don't know if it will help, but it's not much effort and at least it will not hurt.
Full backup should not be necessary (data partition will not get wiped - if you do no factory reset), but is always recommended before flashing firmware.
Very important is that you will be flashing exactly the same stock firmware (with same CSC) as currently installed. In that case no data should get lost, no Knox tripped and so forth.
But as you mentioned, you will have to re-root (Towelroot + SuperSU) and run SDFix.

Thank you very much for your help and all these informations!
nunein said:
Very important is that you will be flashing exactly the same stock firmware (with same CSC) as currently installed.
Click to expand...
Click to collapse
On sammobile.com is just one ROM for Galaxy s4 mini containing Android 4.4.2, for my language, without carrier branding. So I suggest this is the right one...
Or are there any other ways how to additionally check if its the right stock firmware? Sorry for these questions, but I dont want to run into problems just because I picked the wrong firmware...

ontheair said:
Thank you very much for your help and all these informations!
On sammobile.com is just one ROM for Galaxy s4 mini containing Android 4.4.2, for my language, without carrier branding. So I suggest this is the right one...
Or are there any other ways how to additionally check if its the right stock firmware? Sorry for these questions, but I dont want to run into problems just because I picked the wrong firmware...
Click to expand...
Click to collapse
"Phone INFO ★Samsung★" is a nice app to check the phone status, it will show for instance CSC and firmware details.
From your information in the OP you run the same firmware as I do (the file name of my download was 'I9195XXUCNE6_I9195OXACNE6_I9195XXUCNE6_HOME.tar.md5').

nunein said:
"Phone INFO ★Samsung★" is a nice app to check the phone status, it will show for instance CSC and firmware details.
Click to expand...
Click to collapse
Thats great, thank you! I compared the informations provided by this app with the firmware on sammobile.com and its identically. So I will download the firmware now and flash it to the device (after the backup is ready).
I will keep you updated if the stuttering is away then!
In the meantime: Thank you very much for your help!

Finally I flashed the current stock firmware via Odin again. After flashing, the phone booted up correctly (in a non-rooted condition, of course).
But the problem is still present: When scrolling through any apps, lists or even the home screens, the movement stutters.
Are there any other things to check in order to get rid of this? A factory reset (done before) also achieved no improvement. That's really weird...

ontheair said:
Finally I flashed the current stock firmware via Odin again. After flashing, the phone booted up correctly (in a non-rooted condition, of course).
But the problem is still present: When scrolling through any apps, lists or even the home screens, the movement stutters.
Are there any other things to check in order to get rid of this? A factory reset (done before) also achieved no improvement. That's really weird...
Click to expand...
Click to collapse
Sorry to read that.Since you did a factory reset before I don't think it makes sense to do another one.
This is clutching at straws, but: is the issue still present if you remove your SD card?

nunein said:
This is clutching at straws, but: is the issue still present if you remove your SD card?
Click to expand...
Click to collapse
I have tried this now:
- Removing the SD card
- Removing the SIM
- Used another battery without NFC
- Temporarily used a CPU tuner app and switched the CPU temporarily to highest level.
But the problem is still present.
Additionally I found another new problem beside of the stuttering:
- Two heavily used apps doesnt react anymore and needed to be started again (Threema Messenger and Viber messenger). Seems like the system was under high load / low RAM and stopped the apps. But RAM consumption of the device is moderate.
- In YouTube sometimes videos are shown in a damaged way and just in black/white. After restarting the video it is shown correctly.
Im thinking of two last chances:
- Is there a way to create log files of the system and is there somebody who is able to find the problem seeing these logs?
- Or the last way: Switching to another ROM. In this case I can not use the backups created by Titanium, right?

ontheair said:
I have tried this now:
- Removing the SD card
- Removing the SIM
- Used another battery without NFC
- Temporarily used a CPU tuner app and switched the CPU temporarily to highest level.
But the problem is still present.
Additionally I found another new problem beside of the stuttering:
- Two heavily used apps doesnt react anymore and needed to be started again (Threema Messenger and Viber messenger). Seems like the system was under high load / low RAM and stopped the apps. But RAM consumption of the device is moderate.
- In YouTube sometimes videos are shown in a damaged way and just in black/white. After restarting the video it is shown correctly.
Im thinking of two last chances:
- Is there a way to create log files of the system and is there somebody who is able to find the problem seeing these logs?
- Or the last way: Switching to another ROM. In this case I can not use the backups created by Titanium, right?
Click to expand...
Click to collapse
With regards to your second question:
Of course you can restore user apps and related data from one ROM to another. And for instance contacts, SMS and call logs can be saved and restored with MyPhoneExplorer. Restoring data of system apps may work but may cause issues.

Ok! Thank you very much for your help!

[Q]Rooting and keeping up to date with the official ROMs

Hello guys
I've tried to gather some information on how to do this but I always get lost on the best and proper way to do it.
So, basically I'm currently on 20F as upgraded through the official LG Desktop tool.
What I wanted was to get Root while still using the 20F. From what I've gathered so far I have to downgrade to 10E, root using purple drake and then update.
So far I'm able to go as far as downgrading, rooting, installing TWRP. My problem is: after trying and flashing 20E, 20F or 20H I have issues with some games (not sure if the same would happen with non-gaming apps) where basically the game simply closes after a couple of seconds open, no error what so ever. The games in question I've tried are Tap Titans and Crossy Road.
Is someone facing any similar issues? Or could someone give me a hint on anything I might be doing wrong?
Thanks in advance for your help!

Have you reinstalled the games?
As in reinstalled - not restored from backups.

TheImmortal1983 said:
Have you reinstalled the games?
As in reinstalled - not restored from backups.
Click to expand...
Click to collapse
Yup, I did.

[Q] My M8 turned sucks after lollipop update..

I rooted my m8 on stock android 4.4.4 and since the lollipop update rolled out, I applied my backup from TWRP and flashed stock recovery then relocked bootloader. Installed Lollipop via OTA, unlock bootloader and flashed TWRP then flashed supersu. So I'm on android lollipop 5.0 and rooted. I don't know what went wrong, my phone seem too laggy ( mostly when I'm trying to type on facebook messenger, every times i type a text it stacks for some times) And most importantly, some stocks application such us HTC sense TV and Scribble not working anymore. every time I open, it say " stopped unexpectedly ". I don't really know what I might do to get it fix, please advice me.

I have the same problem, basically. I have an unrooted, completely stock phone that got updated through OTA. Ever since the update the phone is lagging, the battery life is visibly worse, and the only visible change is the color of the quick settings and the appearance of notifications. Lots of people are excited and eager to update to Lollipop, but based on my experience I really regret updating. I wish there was an easy way to revert to 4.4.4, but unfortunately it takes too much time which I don't have at the moment. So I decided to wait till May, when Sense 7 is supposed to arrive to M8.
Many of the initial problems with Lollipop were solved by factory reset, but certainly not all. It remains to be lagging and frustrating. At least it's free. But on the other hand, if I bought it, I would certainly return it and ckaimed a refund. As it is, I just have to suffer through it.

unifex_ said:
I have the same problem, basically. I have an unrooted, completely stock phone that got updated through OTA. Ever since the update the phone is lagging, the battery life is visibly worse, and the only visible change is the color of the quick settings and the appearance of notifications. Lots of people are excited and eager to update to Lollipop, but based on my experience I really regret updating. I wish there was an easy way to revert to 4.4.4, but unfortunately it takes too much time which I don't have at the moment. So I decided to wait till May, when Sense 7 is supposed to arrive to M8.
Many of the initial problems with Lollipop were solved by factory reset, but certainly not all. It remains to be lagging and frustrating. At least it's free. But on the other hand, if I bought it, I would certainly return it and ckaimed a refund. As it is, I just have to suffer through it.
Click to expand...
Click to collapse
ႈI guess, there only way to switch back to stock totally is to s-off but I am not sure if we can still apply nondroid back up of 4.4 stocks might work on lollipop loaded device. its so annoying ^_^

Facebook and Facebook Messenger simply have issues. The big problem is that when sounds are enabled in those apps they lag terribly running ART. ART is probably the reason why you're having issues with other apps, which would be remedied by a factory reset and reinstalling all the apps. I don't see any reason why you'd need to be s-off to flash back to a nandroid backup of 4.4. The only possible issue I could imagine you having would be compatibility issues with firmware, and I think that would require you to be s-off to revert back to, but I think 4.4.4 should work with 5.0 firmware. Can't say for certain though since I'm on Verizon and I'm not sure what carrier you're on, but I'm running 5.0.1 on 4.4.4 firmware. I've run several Sense 6 5.0.1 ROMs and they have been just as fast and even more battery efficient than 4.4.4.

You could always flash a Kit-Kat ROM while you wait for Google to address those bugs with the next release. You don't have to S-Off to go back to the older firmware if you don't want to.
If you want to stay stockish, I recommend Maximus HD.

My phone is turning worst and worst, now i can't even screenshot due to luck of storage it says. So I don't have to s-off to roll back ? All these issues are due to Android L or could it be becoz of me, I flash old TWRP ( 2.7). One more things, I do I flashed my local font on HTC ? I use all fontchangers and I even flash it via fastboot but it doesn't seem overwrite. I can't install busybox too.

minkutha said:
My phone is turning worst and worst, now i can't even screenshot due to luck of storage it says. So I don't have to s-off to roll back ? All these issues are due to Android L or could it be becoz of me, I flash old TWRP ( 2.7). One more things, I do I flashed my local font on HTC ? I use all fontchangers and I even flash it via fastboot but it doesn't seem overwrite. I can't install busybox too.
Click to expand...
Click to collapse
Most of your issues are not Android L related but more on user side. Make a backup of your current ROM on ext_sd, make a backup of your internal storage to ext_sd or PC.
Change your TWRP version to 2.8.5.0
In TWRP select WIPE then FORMAT DATA - yes
Reboot recovery
Restore your backup

ckpv5 said:
Most of your issues are not Android L related but more on user side. Make a backup of your current ROM on ext_sd, make a backup of your internal storage to ext_sd or PC.
Change your TWRP version to 2.8.5.0
In TWRP select WIPE then FORMAT DATA - yes
Reboot recovery
Restore your backup
Click to expand...
Click to collapse
I can't download 2.8.5 it aint moving after 99% :S

minkutha said:
I can't download 2.8.5 it aint moving after 99% :S
Click to expand...
Click to collapse
How ? Have you managed that ?

for me on lollipop on the m8. lot of features did not seem to work. like the nfc, screen rotation, g sensor, flashlight, and proximity sensor. so i tried to goto a custom rom and it still didnt work. anyone else have this problem?

For lag removing, disable Nu player in developper options.
As per the rest.. my M8 kicks ass using completely stock lollipop 5.0.1
No lags, no FCs, no misbehaving.
Sent from my HTC One using XDA Free mobile app

No issues here since I jumped to Lollipop. Then again, I'm technically not stock. I'm on Viper Rom.

ckpv5 said:
Most of your issues are not Android L related but more on user side. Make a backup of your current ROM on ext_sd, make a backup of your internal storage to ext_sd or PC.
Change your TWRP version to 2.8.5.0
In TWRP select WIPE then FORMAT DATA - yes
Reboot recovery
Restore your backup
Click to expand...
Click to collapse
I tried that and it still lagging on keyboard then I flashed Revolution HD and same issue. Lately, I found out that comes from Fb messenger, I keep in app sound alerts off and now my keyboard is flawless. I'll just wait for 5.0.2 to go back to stock.
ckpv5 said:
How ? Have you managed that ?
Click to expand...
Click to collapse
Yes bro, I updated it from TWRP Manager.

anjesh12 said:
for me on lollipop on the m8. lot of features did not seem to work. like the nfc, screen rotation, g sensor, flashlight, and proximity sensor. so i tried to goto a custom rom and it still didnt work. anyone else have this problem?
Click to expand...
Click to collapse
For me, its all becoz of TWRP 2.7. TWRP 2.8.5 going smooth on lolipop M8.

Marshmallow upgrade G3-D855

Hi,
After something like 3 years of using G3 installed with android i can see the phone is getting a bit too slow.
The phone is currently installed with stock ROM android 5 (version 21a-SEA-xx) which was installed via FOTA. But at some point it stopped finding updates. Now I can see LG did release android 6 for the G3, although I didn't get.
LG PC Suite, found version 30b.
I can see there are also 30d and 30f, and maybe some other as well.
Are these consecutive versions (meaning 30f is a later version with some bug fixes or improvements ), or just same version for different D855 phones with different hardware or something like that?
Is flashing this ROM with LG PC Suite, is an upgrade or "clean install".
My main incentive for reinstalling is performance. I want to clean everything. All the junk left by OS an apps.
I assume a clean install will actually do better job in the respect.
Is that true?
will this process (installing with PC Suite) will erase everhing from the phone (pics, documents, etc)?
tx
O.

@OJNSim: it's not, what you asked, but before you put time to get an old system +bloat, read 1st post of Clean ROM: based on latest O-firmware, debloated, useful extra's.

rp158 said:
@OJNSim: it's not, what you asked, but before you put time to get an old system +bloat, read 1st post of Clean ROM: based on latest O-firmware, debloated, useful extra's.
Click to expand...
Click to collapse
Hi,
I only thing I understand is that you recommend flushshig this rom.
what do you mean by "it's not"?

@OJNSim: my recommendation is not, what you asked. You asked for reflashing stock-ROM.

Rooted T-800 (wifi model), looking to update to Android Nougat or Later

So I had rooted my Tab S back in 2016 or so (if you check the forums here you'll see my posts for this...). Have had that working for a while now. It tripped the Knox (I didn't personally care about this) except now I want to install a couple streaming apps on the tablet and the OS is too old to handle it
I had loaded TWRP onto the Tab S and rooted it with Lollipop stock ROM and loaded it with SuperSU. It has worked like a charm up till now, issues with Link2SD notwithstanding (I have ZERO intentions of going back to that app).
My question is: what do I need to do to install the newest possible version of Android that the tablet can take? I know it's an older tablet now but I still use it for reading and other stuff, and I'd like to keep it alive a bit longer by installing a new Android OS and ROM on it.
(aside: I did remove a bunch of stuff once I rooted it, so I am not sure how much this may interfere with any attempt to update it to a newer version of Android)
(aside #2: I never updated SuperSU through the app store as I was afraid it would break the root process, so I left that app alone and eventually it stopped showing up in my update list on google play. I'd have to check the tablet to see what version of it I have installed at present)

Funny, I just updated my Tab S this weekend. Same as you, was running into apps that no longer support older OS. I updated mine to Lineage 14.1 version. So far working fine. I know there is a newer version but after reading the threads, this version seemed to be reported as working better. Just follow the instructions in the thread to upgrade.

cbb77 said:
Funny, I just updated my Tab S this weekend. Same as you, was running into apps that no longer support older OS. I updated mine to Lineage 14.1 version. So far working fine. I know there is a newer version but after reading the threads, this version seemed to be reported as working better. Just follow the instructions in the thread to upgrade.
Click to expand...
Click to collapse
Hey thanks for your reply!
Do you need to update the android version to get Lineage OS installed?

No you do not. You just have to update the bootloader. Instructions are in the thread on how to as well as to have to confirm.

Hi again,
Sorry could you point me in the direction of said thread?

cbb77 said:
No you do not. You just have to update the bootloader. Instructions are in the thread on how to as well as to have to confirm.
Click to expand...
Click to collapse
Wait I think I found it. Was this it?
https://forum.xda-developers.com/galaxy-tab-s/development/rom-lineageos-14-1-sm-t800-t3545080

bsquared938 said:
Wait I think I found it. Was this it?
https://forum.xda-developers.com/galaxy-tab-s/development/rom-lineageos-14-1-sm-t800-t3545080
Click to expand...
Click to collapse
Yes, that is the correct thread.

cbb77 said:
Yes, that is the correct thread.
Click to expand...
Click to collapse
Perfect. Will also update this table to give it a further lease on life .
Thanks man!

cbb77 said:
Yes, that is the correct thread.
Click to expand...
Click to collapse
@cbb77
Cannot find the Lineage OS ROM image, I think it may have been removed from their site given the age.
Do you have a working download link for this?
Edit: please ignore post, I found it as soon as I posted this -.-

T800 https://download.exynos5420.com/LineageOS-14.1-Deathly/chagallwifi/
Pretty bood performance and battery,also GPU OC.Load this with Gapps.

Trung Gs said:
T800 https://download.exynos5420.com/LineageOS-14.1-Deathly/chagallwifi/
Pretty bood performance and battery,also GPU OC.Load this with Gapps.
Click to expand...
Click to collapse
I assume I have to load the marshmallow bootloader before I do anything?

bsquared938 said:
I assume I have to load the marshmallow bootloader before I do anything?
Click to expand...
Click to collapse
Personally I like the Resurrection Remix rom. https://forum.xda-developers.com/ga...om-resurrection-remix-n-sm-t800-wifi-t3606243
Just do the standard stuff. You've got TWRP installed, so you're most of the way there. Back up whatever you want to back up, and then:
1. Wipe System, Data, Cache, and Dalvik Cache.
2. Install OS.
3. Install Magisk (if you want to use Magisk for your rooting needs. It seems to be the popular root tool now. It's pretty boss.)
4. Reboot into system, then back into recovery, and:
5. Install GApps or whatever. I like NanoDroid myself. It's the alternative to GAPPS. There are a few odd programs that just plain won't work with it yet, but the official Google apps have an annoying habit of wasting processing power on pointless background nonsense, so I prefer the alternative. Also there's an Xposed module that improves compatibility. https://nanolx.org/nanolx/nanodroid

Hmm I'll take a look at this other ROM
Currently, I have a rooted stock ROM (SuperSU ad root manager), and interested in moving to a custom ROM that is well supported
My only 2 concerns before starting are:
1) Do I need to update SuperSu
2) Do I need to update the bootloader before doing anything else (even the ROM that you suggested @FailSafeNow ? )

Anyone who was wondering what happened:
Process I used (done 2 days ago as of this post):
0) transferred all relevant files to device for the operation, backed up stuff I wanted
1) Updated bootloader to marshmallow via ODIN
2) Updated TWRP to 3.x (forgot exact version) from within TWRP
3) Wiped system + data + cache (I could have probably wiped internal memory but there wasn't much there anyways)
4) Installed Lineage OS 14.1 and Nano Gapps from within TWRP (in that order)
( full disclosure: I had wrong Gapps .zip file the first time and had to get the right one afterwards)
While I had the superSU package, I decided not to root the tablet again. I don't think I need the customization that root offers this time around especially since Lineage OS is already so lightweight compared to the stock ROM I just replaced...
Thanks all for your help!!
Over and out
Thanks all! Nice super fast tablet with amazing battery life now

bsquared938 said:
Anyone who was wondering what happened:
Process I used (done 2 days ago as of this post):
0) transferred all relevant files to device for the operation, backed up stuff I wanted
1) Updated bootloader to marshmallow via ODIN
2) Updated TWRP to 3.x (forgot exact version) from within TWRP
3) Wiped system + data + cache (I could have probably wiped internal memory but there wasn't much there anyways)
4) Installed Lineage OS 14.1 and Nano Gapps from within TWRP (in that order)
( full disclosure: I had wrong Gapps .zip file the first time and had to get the right one afterwards)
While I had the superSU package, I decided not to root the tablet again. I don't think I need the customization that root offers this time around especially since Lineage OS is already so lightweight compared to the stock ROM I just replaced...
Thanks all for your help!!
Over and out
Thanks all! Nice super fast tablet with amazing battery life now
Click to expand...
Click to collapse
I know this is a somewhat old thread. I have a T800 myself and am looking for a ROM. Want to try Lineage OS 14.1 like you have tried. Was curious as to whether you still have it and if you still liked it? If so, what version are you running now and how is your battery life compared to stock? Thanks so much! :good: