[Q] A few Qs regarding rooting and custom ROM - Galaxy S6 Q&A, Help & Troubleshooting

I read in the CF Auto root thread that running a custom recovery causes the S6 to not enter deep sleep, this put me off rooting my device.
My Qs are:
If I root using CF and flash KTOONZ kernel will that fix the deep sleep problem?
Are there any other little quirks I should know before flashing anything?
Do Roms for G920F work on G920i?
Cheers!

I think most roms and kernels now have fixed the deep sleep problem, and I have found that most of the custom roms support the "i" model.

Related

leedroid 5.1.1 auto restart issues

I just flashed a custom ROM to my Desire HD and it is auto restarting very often. I researched but couldn't really found anything useful. How can I fix it ?

[Q] Wake issue

My TF101 just recently started showing some wake issues, specifically a non-responsive touch screen and no wifi connection.
It is rooted and I installed a couple of custom roms and the KAT kernel.
First time noticing those issues was with the custom roms, so I decided to revert back to stock, with the backup I made. I also reflashed the stock kernel.
Does anybody have had these problems and knows how to fix them?

Bluetooth not turning on

I have root my S4 (I9505) and also transformed it to S5 and after a few days the Bluetooth is not turning on (I have stock/official rom).
Any help please?
anorthosis said:
I have root my S4 (I9505) and also transformed it to S5 and after a few days the Bluetooth is not turning on (I have stock/official rom).
Any help please?
Click to expand...
Click to collapse
What specifically installed on the device?
Tamerlan2009 said:
What specifically installed on the device?
Click to expand...
Click to collapse
http://www.androidpit.com/how-to-transform-your-galaxy-s4-into-an-s5
anorthosis said:
http://www.androidpit.com/how-to-transform-your-galaxy-s4-into-an-s5
Click to expand...
Click to collapse
put the default settings
Ok thanks. I will try it.
I'm facing the same problem too... last week only i rooted my phone and installed CWM recovery...then i installed Custom Rom's like Hassan ROM, Omega ROM, Cyanogenmod 11 Rom, Pacman ROM etc etc just to check various Rom's and their features out.....At first i installed only one ROM at a time and den also dual booted two ROM's by romswitcher...While i was checking my phone once i discovered that my phone's Bluetooth is not turning ON...The toggle is only becoming light green and also from the settings its only showing turning Bluetooth On but it's unable to turn bluetooth On.....Now i googled my problem and read across various forums for solution...I tried various things also flashed my firmware to stock samsung but still bluetooth does not turn On...also i flashed with stock samsung firmware of feb and march 2014 and updated my phone over OTA but still the problem persists....i even installed latest perseus kernel while rooted but still could not turn my bluetooth ON.
I would be very grateful if someone can help me solve my problem and help me Switch ON my bluetooth as it is very needed aspect for my daily use.
My Version of S4 is i9500 with android kitkat 4.4.2. Also all my other features are working normally on custom ROM's too.
suhasdutta said:
I'm facing the same problem too... last week only i rooted my phone and installed CWM recovery...then i installed Custom Rom's like Hassan ROM, Omega ROM, Cyanogenmod 11 Rom, Pacman ROM etc etc just to check various Rom's and their features out.....At first i installed only one ROM at a time and den also dual booted two ROM's by romswitcher...While i was checking my phone once i discovered that my phone's Bluetooth is not turning ON...The toggle is only becoming light green and also from the settings its only showing turning Bluetooth On but it's unable to turn bluetooth On.....Now i googled my problem and read across various forums for solution...I tried various things also flashed my firmware to stock samsung but still bluetooth does not turn On...also i flashed with stock samsung firmware of feb and march 2014 and updated my phone over OTA but still the problem persists....i even installed latest perseus kernel while rooted but still could not turn my bluetooth ON.
I would be very grateful if someone can help me solve my problem and help me Switch ON my bluetooth as it is very needed aspect for my daily use.
My Version of S4 is i9500 with android kitkat 4.4.2. Also all my other features are working normally on custom ROM's too.
Click to expand...
Click to collapse
Did you fully cleaned your phone before coming back to stock ?? i had one this problem and all i did was full wiping the phone /Data + /System etc and flashing a stock samsung rom and everything was working well
Rami_Debab said:
Did you fully cleaned your phone before coming back to stock ?? i had one this problem and all i did was full wiping the phone /Data + /System etc and flashing a stock samsung rom and everything was working well
Click to expand...
Click to collapse
yes i did full wiping including cache partition, boot, sysytem, data, sdcard, cache, and dalvik cache also...after that i installed back my stock firmware....the phone came back to original mode with OTA working well and totally unrooted but still bluetooth didn't switched on!
Flash modem
suhasdutta said:
I'm facing the same problem too... last week only i rooted my phone and installed CWM recovery...then i installed Custom Rom's like Hassan ROM, Omega ROM, Cyanogenmod 11 Rom, Pacman ROM etc etc just to check various Rom's and their features out.....At first i installed only one ROM at a time and den also dual booted two ROM's by romswitcher...While i was checking my phone once i discovered that my phone's Bluetooth is not turning ON...The toggle is only becoming light green and also from the settings its only showing turning Bluetooth On but it's unable to turn bluetooth On.....Now i googled my problem and read across various forums for solution...I tried various things also flashed my firmware to stock samsung but still bluetooth does not turn On...also i flashed with stock samsung firmware of feb and march 2014 and updated my phone over OTA but still the problem persists....i even installed latest perseus kernel while rooted but still could not turn my bluetooth ON.
I would be very grateful if someone can help me solve my problem and help me Switch ON my bluetooth as it is very needed aspect for my daily use.
My Version of S4 is i9500 with android kitkat 4.4.2. Also all my other features are working normally on custom ROM's too.
Click to expand...
Click to collapse
If you flash omega ROM and follow instructions correctly you have to flash modem which is not part of the main ROM
Geoxx said:
If you flash omega ROM and follow instructions correctly you have to flash modem which is not part of the main ROM
Click to expand...
Click to collapse
yups have flashed modem too from omega files
suhasdutta said:
yups have flashed modem too from omega files
Click to expand...
Click to collapse
Try The Solution I Gived You In Omega Thread
Let me Know iF iT Works
Sent From My MobiLe Phone

How to figure out what is causing heat and battery usage (CPU and Battery usage)

Hello. I have the GS5. For over three months it overheats like hell. Why because I did the firmware update and it all started with this.
TL;DR: I need an app or program that shows detailed percentage of usage and temperatures of apps. It would be great if you can find a real-time monitoring one like on PCs. My phone is rooted so feel free to recommend any app that suit my needs.
It overheats so much that I can barely able to hold the phone because it slips through so easily from my hand (nope my hands are not dirty, I wash them with lots of soaps ).
I bought a case and it is still somewhat hard to hold the phone with one hand but the case surely helped. Can use it with two hands but was able to use with one hand without any problems so why should I accept this right?
The cpu is around 40 Celsius at idle to very low usage. The battery is around 28 Celsius at idle. The room temps is 26 Celsius.
After using my phone for about fifteen mins, the battery is going up to 36-38 Celsius. The cpu is around 50 Celsius. Not playing games at all, just surfing on the web and installing one to two apps from Android Market. Do you think it is normal or excessive? I fell the heat in my hands. It was not been like this before the firmware update.
Although I did all wipes and flash the whole rom from scratch (even ticked Nand Erase All), my problem still persists so I am out of ideas. Maybe I can buy a new battery and a charger but I would like to make sure that the problem is not causing by software. Thank you.
karasahin said:
Hello. I have the GS5. For over three months it overheats like hell. Why because I did the firmware update and it all started with this.
TL;DR: I need an app or program that shows detailed percentage of usage and temperatures of apps. It would be great if you can find a real-time monitoring one like on PCs. My phone is rooted so feel free to recommend any app that suit my needs.
It overheats so much that I can barely able to hold the phone because it slips through so easily from my hand (nope my hands are not dirty, I wash them with lots of soaps ).
I bought a case and it is still somewhat hard to hold the phone with one hand but the case surely helped. Can use it with two hands but was able to use with one hand without any problems so why should I accept this right?
The cpu is around 40 Celsius at idle to very low usage. The battery is around 28 Celsius at idle. The room temps is 26 Celsius.
After using my phone for about fifteen mins, the battery is going up to 36-38 Celsius. The cpu is around 50 Celsius. Not playing games at all, just surfing on the web and installing one to two apps from Android Market. Do you think it is normal or excessive? I fell the heat in my hands. It was not been like this before the firmware update.
Although I did all wipes and flash the whole rom from scratch (even ticked Nand Erase All), my problem still persists so I am out of ideas. Maybe I can buy a new battery and a charger but I would like to make sure that the problem is not causing by software. Thank you.
Click to expand...
Click to collapse
Please provide further information in regard to your device e.g. ROM, kernel etc.
noc.jfcbs said:
Please provide further information in regard to your device e.g. ROM, kernel etc.
Click to expand...
Click to collapse
Sure. I haven't touched to kernel yet but I have a custom rom installed. I just installed it yesterday. Was using stock rom of Lollipop 5.0 of my country before. I also tried the UK rom (BTU) but all the same.
karasahin said:
Sure. I haven't touched to kernel yet but I have a custom rom installed. I just installed it yesterday. Was using stock rom of Lollipop 5.0 of my country before. I also tried the UK rom (BTU) but all the same.
Click to expand...
Click to collapse
Despite only little information available, I assume the issue is kernel related. Had you e.g. overclocked and over-voltaged? Most likely not as you were on stock.
Your custom ROM certainly came with its own, new kernel. I suggest to monitor the overheating first as you just recently flashed the custom ROM. However, you can also play with the kernel settings (my current one has its own control-apk, or by using e.g. an apk called "Kernel Adiutor") to see what's best serves your requirements. If you're not happy with the custom ROM's kernel, you can flash a custom kernel but check compatibility first. And remember, when you're on a custom kernel every time you flash the custom ROM you'll have to re-flash the kernel.
Here's a real good guide regarding CPU governors, I/O schedulers and more:
http://forum.xda-developers.com/general/general/ref-to-date-guide-cpu-governors-o-t3048957
noc.jfcbs said:
Despite only little information available, I assume the issue is kernel related. Had you e.g. overclocked and over-voltaged? Most likely not as you were on stock.
Your custom ROM certainly came with its own, new kernel. I suggest to monitor the overheating first as you just recently flashed the custom ROM. However, you can also play with the kernel settings (my current one has its own control-apk, or by using e.g. an apk called "Kernel Adiutor") to see what's best serves your requirements. If you're not happy with the custom ROM's kernel, you can flash a custom kernel but check compatibility first. And remember, when you're on a custom kernel every time you flash the custom ROM you'll have to re-flash the kernel.
Here's a real good guide regarding CPU governors, I/O schedulers and more:
http://forum.xda-developers.com/general/general/ref-to-date-guide-cpu-governors-o-t3048957
Click to expand...
Click to collapse
So I think I should update kernel on this custom rom with a new one? Because the OP says that flash hispasian kernel after flashing his rom. I haven't do that yet, nor I have experience about it. I believe I have a custom rom with stock kernel right now. I don't think it is related to custom rom. It overheats like I was on stock rom. Could be kernel. Can kernel be updated through the firmware update? It may explain why it starts to overheating after that. No, I haven't overclocked and over-voltaged the cpu. Maybe it came overclocked or over-voltaged with this custom rom but it isn't described.
karasahin said:
So I think I should update kernel on this custom rom with a new one? Because the OP says that flash hispasian kernel after flashing his rom. I haven't do that yet, nor I have experience about it. I believe I have a custom rom with stock kernel right now. I don't think it is related to custom rom. It overheats like I was on stock rom. Could be kernel. Can kernel be updated through the firmware update? It may explain why it starts to overheating after that. No, I haven't overclocked and over-voltaged the cpu. Maybe it came overclocked or over-voltaged with this custom rom but it isn't described.
Click to expand...
Click to collapse
I suggest to surf your custom ROM's thread and to figure out, which kernels can go with this ROM and which are the experiences of other users with the respective kernel.
Firmware updates (I assume you mean now updates of your ROM) won't solve your problem because with the update comes its own kernel i.e. you need to flash afterwards the kernel you want again.
I always flash my custom kernel through recovery. As recovery, I personally recommend TWRP in its latest version (as you see in my signature block, I'm using TWRP v3.0.2). An in my opinion very good tool, to install (actually flash through your current recovery) TWRP is via an App (apk) called "Flashify".
After you've flash TWRP and rebooted, google how to flash a kernel or search XDA for my postings. I think I already describe somewhere how to do so.
noc.jfcbs said:
I suggest to surf your custom ROM's thread and to figure out, which kernels can go with this ROM and which are the experiences of other users with the respective kernel.
Firmware updates (I assume you mean now updates of your ROM) won't solve your problem because with the update comes its own kernel i.e. you need to flash afterwards the kernel you want again.
I always flash my custom kernel through recovery. As recovery, I personally recommend TWRP in its latest version (as you see in my signature block, I'm using TWRP v3.0.2). An in my opinion very good tool, to install (actually flash through your current recovery) TWRP is via an App (apk) called "Flashify".
After you've flash TWRP and rebooted, google how to flash a kernel or search XDA for my postings. I think I already describe somewhere how to do so.
Click to expand...
Click to collapse
I mentioned firmware updates because I was wondering if stock (Samsung) rom firmware update did break something in stock kernel. Is it possible? I'm %99 positive this happened after the latest firmware update. I mainly flashed this custom rom to get rid of overheating problem but the problem persists.
I just flashed HispAsian kernel, which the creator of this custom ROM recommended, through TWRP and works fine for now. But nothing's changed about overheating.
karasahin said:
I mentioned firmware updates because I was wondering if stock (Samsung) rom firmware update did break something in stock kernel. Is it possible? I'm %99 positive this happened after the latest firmware update. I mainly flashed this custom rom to get rid of overheating problem but the problem persists.
I just flashed HispAsian kernel, which the creator of this custom ROM recommended, through TWRP and works fine for now. But nothing's changed about overheating.
Click to expand...
Click to collapse
Look into the kernel settings as mentioned in post #4 (http://forum.xda-developers.com/showpost.php?p=67135599&postcount=4).
Before you change anything I suggest to educate yourself via the thread mentioned in that post, too.
noc.jfcbs said:
Look into the kernel settings as mentioned in post #4 (http://forum.xda-developers.com/showpost.php?p=67135599&postcount=4).
Before you change anything I suggest to educate yourself via the thread mentioned in that post, too.
Click to expand...
Click to collapse
I actually don't care about custom roms. As long as I can find a solution for stock roms I would return to them. Could you please give me your solution for stock roms?
karasahin said:
I actually don't care about custom roms. As long as I can find a solution for stock roms I would return to them. Could you please give me your solution for stock roms?
Click to expand...
Click to collapse
It's always your decision and desire. I think everything said also applies to stock ROM. Check your kernel settings and manipulate to your needs. Some tools were mentioned before.
noc.jfcbs said:
It's always your decision and desire. I think everything said also applies to stock ROM. Check your kernel settings and manipulate to your needs. Some tools were mentioned before.
Click to expand...
Click to collapse
It is too complicated for me. If you could just point how to downlock the CPU's clock speed then I can try and see if it works to prevent overheating.
Also let's say I decide to return to stock rom. Will current kernel replace with stock one?
karasahin said:
It is too complicated for me. If you could just point how to downlock the CPU's clock speed then I can try and see if it works to prevent overheating.
Also let's say I decide to return to stock rom. Will current kernel replace with stock one?
Click to expand...
Click to collapse
I'm not familiar with your phone (wasn't it a Samsung Galaxy S5) or your stock ROM (Lollipop?). I suggest that you address your questions in the GSG5 forum, where the gurus for your phone rest. Sorry for that.
Anyhow, I added two screenshots of the apk "Kernel Adiutor" (first two), and two of AGNi control, which came with my kernel. As you see both of them support manipulation of kernel settings.
IRT your last question: I'm convinced flashing stock ROM is also replacing current kernel. ...but as said: GSG5 forum.

samsung s2 hd lte (shv e120s) lolipop rom (cm 12) problem

I have samsung s2 hd lte ( SHV E120S ) which had ice cream sandwich rom
Baseband version:E120SKSLL6
While searching for roms i found both kitkat and lolipop cynogenmod custom rom...cm 11. And cm12.1. ...
Installing those custom rom i found some problems
In kitkat. ::wifi was not turning on but bluetooth , mobile data was fine.
In lolipo cm12 :::
1) wifi was not turning on same as in kitkat rom . Also Bluetooth and mobile data were fine..
2) when i put device in sleep device auto rebooted . that is when i pressed power button for lock or double tapp on satus bar to make device sleep or whenever screen turned off due to inactivity it rebooted..
Device to sleep....reboot
I tried running in safemod. It doesnot work.
But i had another custom jellybean rom .when i flashed it wifi worked . so it is sure it is not hardware problem..
Please i need help? has anyone able to solve it.. I want to have lolipop rom in my device ...so any suggestions?????
pathakarjun2010 said:
I have samsung s2 hd lte ( SHV E120S ) which had ice cream sandwich rom
Baseband version:E120SKSLL6
While searching for roms i found both kitkat and lolipop cynogenmod custom rom...cm 11. And cm12.1. ...
Installing those custom rom i found some problems
In kitkat. ::wifi was not turning on but bluetooth , mobile data was fine.
In lolipo cm12 :::
1) wifi was not turning on same as in kitkat rom . Also Bluetooth and mobile data were fine..
2) when i put device in sleep device auto rebooted . that is when i pressed power button for lock or double tapp on satus bar to make device sleep or whenever screen turned off due to inactivity it rebooted..
Device to sleep....reboot
I tried running in safemod. It doesnot work.
But i had another custom jellybean rom .when i flashed it wifi worked . so it is sure it is not hardware problem..
Please i need help? has anyone able to solve it.. I want to have lolipop rom in my device ...so any suggestions?????
Click to expand...
Click to collapse
It's a bug, everything that isn't working right is called bug.
Report this issue to the rom developer.
He the who made it and the one who can fix it
Thunderoar said:
It's a bug, everything that isn't working right is called bug.
Report this issue to the rom developer.
He the who made it and the one who can fix it
Click to expand...
Click to collapse
But same bug cannot be on all roms...i almost tried 3 kitkat cynogenmod and 3 cynogenmod cm12 lolipop rom ...Also tried hellkat kitkat 4.4.4 ...
But all had wifi problem. Wifi could not be turned on while mobile data and bluetooth was working fine..
Is it a problem caused by baseband version? Is baseband of my phone need to be upgraded?
pathakarjun2010 said:
But same bug cannot be on all roms...i almost tried 3 kitkat cynogenmod and 3 cynogenmod cm12 lolipop rom ...Also tried hellkat kitkat 4.4.4 ...
But all had wifi problem. Wifi could not be turned on while mobile data and bluetooth was working fine..
Is it a problem caused by baseband version? Is baseband of my phone need to be upgraded?
Click to expand...
Click to collapse
No, you don't have to upgrade it, all what's happening is a software problem, all the devs maybe take the same device tree to create the rom, and because of that, all the rom you've tried had the same problem.
Thunderoar said:
No, you don't have to upgrade it, all what's happening is a software problem, all the devs maybe take the same device tree to create the rom, and because of that, all the rom you've tried had the same problem.
Click to expand...
Click to collapse
Can it be solved ?
pathakarjun2010 said:
Can it be solved ?
Click to expand...
Click to collapse
Only the dev who can solve it, if the dev doesn't have experience in debugging rom,
Then idk if it can be solved..
Does no one knows how to fix it??
Well after lot of searches it was a problem of kernel of the custom roms..
............There are several users who complain about Wifi not working after kernel (boot.img) flash.
This is mostly due to Wifi modules are not inside boot.img but they are inside NIGHTLY (/system/lib/modules) zip.
If kernel version is version X but modules inside nightly are of version Y, wifi will not work.
If you integrate wifi module in boot.img (kernel) instead of nightly zip, this issue should possibly resolve on its own..........
But anyone here knows how to integrate wifi module in boot.img????????? Need answers;;;;;;;

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