yashsingh1/xdaforums huggingface dataset:
[Galaxy S II Q&A, Help & Troubleshooting] shri_chanakya:
what does paramter echo "100" > /sys/module/stand_hotplug/parameters/loadh1 means? I understood loadh0 and loadl0. Is it when the second core will switch on when screen is off?
[Galaxy S II Q&A, Help & Troubleshooting] Many40:
About hotplug tunables you can read here: http://xdaforums.com/showthread.php?p=24233069
[Galaxy S II Q&A, Help & Troubleshooting] colaxs:
Unable to access External SD Card

Hello Everyone

I have downloaded the Resurrection Remix Rom JB version 3.06 on my Samsung Galaxy S2.

Everything is working fine on the Siyah Kernel 4.1

However, i have a weird problem accessing my 32 GB MicroSD card on my PC.

Under ExTweaks, I have enabled the "Force Mass Storage" mode.

But when I connect my phone to my Windows XP PC, only the Internal SD card shows up. The external SD card shows up in Windows explorer, but when I click on it, i get a "Please insert a drive" message.

I searched around and some suggested forcing a dual mount option. However, there is no such option in my Ex Tweaks settings application.

I hope someone can help me out with this.

Thanks
[Galaxy S II Q&A, Help & Troubleshooting] Mittaa:
Thanks :good:
[Galaxy S II Q&A, Help & Troubleshooting] joezy07:
Hi ! New to Siyah here.

f wanto to upgrade my kernel to latest Siyah (4.1.5) from 4.1.4, does my setting from ExTweaks back to default ?

Thanks
[Galaxy S II Q&A, Help & Troubleshooting] Many40:
No, they will stay unchanged.
[Galaxy S II Q&A, Help & Troubleshooting] m00ts:
Is it possible to brick my phone while flashing Siyah 4.1.5? I'm on stock 4.04 XWLPT and have rooted already and will be flashing via ODIN.
[Galaxy S II Q&A, Help & Troubleshooting] lyndonguti:
Nope
[Galaxy S II Q&A, Help & Troubleshooting] Many40:
You would have to be a magician to hardbrick your phone while flashing a kernel :). Just flash it, that is all. You of course need to remember the basics of flashing with PC odin (flash kernel as PDA and don't check any other additional options (leave them default))
[Galaxy S II Q&A, Help & Troubleshooting] Debadatta:
Nope, provided you set all the settings correctly and do not unplug your cable in anyway while the flashing is going on. Never ever unplug while flashing is going on, not even accidentally!!
[Galaxy S II Q&A, Help & Troubleshooting] m00ts:
Thanks guys for your quick responses and confidence boost!

Edit: Just installed Siyah 4.1.5 and everything ok! phew, thanks again guys.
[Galaxy S II Q&A, Help & Troubleshooting] waqax:
Why ExTweaks not working for me?

i have tried Siyah 4.1.5 and Siyah 4.1.2

ExTweaks is stuck at loading screen forever
[Galaxy S II Q&A, Help & Troubleshooting] topiratiko:
Did you reset extweaks in recovery.

Sent from my AT&T Samsung Galaxy SII

CM 9.1/Siyah 4.1.5/PegasusQ/Noop
[Galaxy S II Q&A, Help & Troubleshooting] Christiancs1969:
Give it root access

RR siyah
[Galaxy S II Q&A, Help & Troubleshooting] rav4kar:
hi robertobsc,

I had applied your recommendations for 5 steps and it did not help for either screen off or on, it ramped up and down pretty much on all steps, 200 through 1200. Then I changed it to 16 steps and applied your recomm. for 16 steps. Here on 16 steps with your tweaks, my screen off activities like listening to music, running something in background while screen if off have improved, it stays on 200mhz constantly for long, it's a big success. But with same 16 steps if I browse or just keep the screen on, it tends to spend more on 1200, not trying 800 or 1000, this results in quick battery drain, unfortunately I am not able to get screen shot of CPU Spy due to some issues with rom or key combinations!

do you suggest something to try out so that it balances out screen on and off and still be battery friendly? :good:
[Galaxy S II Q&A, Help & Troubleshooting] robertobsc:
Hi rav4kar,

My settings works for 16 steps, which I think are much better than 5. For 5 steps must do other settings. I think these are enough

inc_cpu_load = 90

dec_cpu_load = 60

pump_up_step = 1

pump_down_step = 1

up_sample_time = 40000

down_sample_time = 20000

screen_off_min_step = 5

ignore_nice_load = 1

LulzactiveQ or lulzactive itself are interactive governors. Meaning that they constantly check for load and they don't make any average formula, like pegasusq.

If your cpu are in max freq, that's because it must be in that freq at that particular moment. But all the frequencies are used.

The thing is battery life is not worse with it. I had a better battery life than with pegasus.

Just make a two day compare of lulzactiveq and pegasusq or other gov to see the effective difference.

Enviado de meu GT-I9100 usando o Tapatalk 2
[Galaxy S II Q&A, Help & Troubleshooting] :
I can't read and do not deserve any help ;)

Please delete this post!
[Galaxy S II Q&A, Help & Troubleshooting] jashy67:
Hey i ve flashed Siyah 1.4.5 n all works fine except that my external SD card is not mounted and the phone dont see it. I ve checked about in this thread but found nothing about, anyone knows this issue and how i can fix it?

thx in advance

Edit : well, i can have access to my SD card, but can t no more see my APK installed on SD card on drawer ...and they are all "grey" when i open "applications" :s
[Galaxy S II Q&A, Help & Troubleshooting] rav4kar:
robertobsc, thanks for all your help, I think I have found sweet spot for each parameter based on my usage patterns along with your tweaks for 16 steps.:highfive:
[Galaxy S II Q&A, Help & Troubleshooting] robertobsc:
Good to hear that!

Enviado de meu GT-I9100 usando o Tapatalk 2
[Galaxy S II Q&A, Help & Troubleshooting] Tungstwenty:
I have an upcoming surprise up my sleeve for this kind of stuff ;)
[Galaxy S II Q&A, Help & Troubleshooting] rav4kar:
Eagerly looking forward to that!! :highfive:
[Galaxy S II Q&A, Help & Troubleshooting] robertobsc:
Oooooooh, surprises.... always good!

Enviado de meu GT-I9100 usando o Tapatalk 2
[Galaxy S II Q&A, Help & Troubleshooting] rakeshishere:
Please don't do that again. It reminds me of this

http://www.youtube.com/watch?v=LKpnZ7cwWuY&feature=youtube_gdata_player

I love surprises too.. :)
[Galaxy S II Q&A, Help & Troubleshooting] luizlee86:
Can someone help me please?

I didn't notice it before, but when the screen dims, the touchky lights turn on... is that normal? Is there a way to disable it or disable the dim?

If it is not kernel related, sorry. But I think it is... =D
[Galaxy S II Q&A, Help & Troubleshooting] R3Map:
+1

I dont remember seeing it in 4.1.4, but it is definitely happening on 4.1.5
[Galaxy S II Q&A, Help & Troubleshooting] robertobsc:
I would like to share my best results with my S2 so far. Of course it isn't a xda record, but I never get this battery before (my device architecture isn't good in power savings).

I did everything I could with the phone, except playing. Browsed, mailed really a lot, Google played, even coded a shell script.

As can be seen, it's not true that staying more in max freq means not save battery.

My best earlier record was 3:15 in 50% with pegasus.

With lulzactiveq I got better performance with a better battery life.

(cpu spy picture was from one hour monitoring)

Enviado de meu GT-I9100 usando o Tapatalk 2
[Galaxy S II Q&A, Help & Troubleshooting] huwande1acruz:
Can you mind if you share your extweaks setting and also gov setting in setcpu? Mine got 3h+ in lulzactiveq with 3g on all the way.. thanks!

" In Cody, we trust "
[Galaxy S II Q&A, Help & Troubleshooting] Eclipse_Droid:
i am using stock LPT rom with latest siyah kernel.

The issue i am having with this setup is with my signal. Every so often the signal will cut out mid call, whilst on wifi tether or just randomly i will notice the signal bars disappear and there is just a circle icon with a cross through it. After a few seconds the signal recovers again and i am able to resume using the network.

I have reverted back to stock cfroot kernel with everything else the same and the problem is gone.

My question is. Is there anyone else experiencing issues like this? and if so any ideas what could be causing it? as i want to use siyah as my daily kernel as i make good use of the tweaks it offers, But at the moment i am forced to use stock again to prevent experiencing these issues.

cheers!
[Galaxy S II Q&A, Help & Troubleshooting] rav4kar:
Thanks robertobsc! But it seems you have max clocked it to 1Ghz, any under volt or stock voltage? If max set to 1Ghz and your tweaks for 16 steps used, what's the value for screen_off_min_step?
[Galaxy S II Q&A, Help & Troubleshooting] cooladityarai:
Hiii everone....

I m getting too much wierd battery stats wiyh siyah 4.1.4 & 4.1.5. I tried it on all roms RR 2.6.1, CM9.1 & stock XWLP7 and all are behaving like same. Tried to reset fuel gauze but same. I changed the kernel and problem was gone. But i cant live without Siyah.....so plz give me some solution.

Thanks
[Galaxy S II Q&A, Help & Troubleshooting] Many40:
It's really hard to help you with very limited information you provided ("....weird battery stats...."). I recommend to you to go to this THREAD, install BetterBatteryStats app and based on a guidance given in the 1st post save a dumpfile from the app. Then post the file in that thread. I'm pretty sure guys there will give you some reasonable solution.

Regards

---------- Post added at 10:23 PM ---------- Previous post was at 09:59 PM ----------

Hi, I assume he uses what he recommends - screen_off_min_step=14, what is in this case (for 16 freq steps) 200MHz.

I'm using also 16 steps but my frequency scalling range is 100MHz - 1GHz, so I decreased screen_off_min_step to 15 what in this case is 100MHz (min. scalling freq as well). It works quite well for me (no freezes).

Regards
[Galaxy S II Q&A, Help & Troubleshooting] rav4kar:
hi Many40, thanks! let me give it a try I never tried screen_off_min_step to 15 + 100MHz as min, always feared about freezing!
[Galaxy S II Q&A, Help & Troubleshooting] Tungstwenty:
Like many others, I have also experienced these exact symptoms for some time, and then decided to start tweaking settings individually in ExTweaks to see whether it would go away. In some previous versions, when others were complaining, I hadn't experienced issues.

BTW, does in also happen to you that if you activate airplane mode, you'll then need to wait a couple of minutes before that option starts responding again allowing you to re-enable mobile connection and gaining signal, without rebooting?

My current setup which is not causing any problems for a while now:

- Battery profile

- Gentle fair sleepers OFF

- CFS - Samsung defaults

- smooth scaling level: 1200

- No UV

- 16 steps (all)

- pegasusq governor

- 200-1200 freq

- No changes on GPU, Audio, Screen, BLN

- activated Android logger

- sio i/o scheduler

I also matched the RIL library to my modem:

- XWLPG (4.0.3) stock rom, odexed

- XXLPX modem

- XXLPX/NELP4 RIL library, as suggested by GetRIL

Also, even though I had experimented with XXLQ6 modem before, I hadn't changed the other RIL files (see this thread) so I didn't feel the need to update them to match my ROM / RIL.

Now that this is running stable for quite some time, I think I'll start modifying a few ExTweaks params one at the time for a while to see when does the problem come back:

- reducing min freq to 100

- CFS - linux or thunderbolt

...
[Galaxy S II Q&A, Help & Troubleshooting] robertobsc:
Sry, i couldn't post earlier.

Yes, I'm doing hundreds of different settings and tweaks for performance / battery, via init.d, extweaks, rom toolbox, and setcpu.

I think these are most relevant for battery.

Extweaks:

----------------------------

GENTLE_FAIR_SLEEPERS on

CFS ThunderBolt scripts

Smooth level 800

Min/max freq: 200/1000

-75 undervolt

Gpu boost lvl off

Gpu frequencies stock

Gpu voltages 800/850/900/950

BLN led voltage level 2800

Android logger off

Io scheduler sio

----------------------------

Undervolt by set cpu

CPU (9 steps) - 200Mhz - 800mV; 300Mhz -825mV; 400Mhz - 850mV; 500Mhz - 900mV; 600Mhz - 925mV; 700Mhz - 950mV; 800Mhz -950mV; 900Mhz - 1025mV; 1000Mhz - 1075mV

---------------------------

In rom toolbox:

NO_NORMALIZED_SLEEPER

NO_NEW_FAIR_SLEEPERS

---------------------------

Via init.d

# touch screen freq

LVL=`cat /proc/kallsyms|grep " level\.2"|awk '{print $3}'`;

kmemhelper -n $LVL -t int 14

# arch power on

chmod +w /sys/kernel/debug/sched_features

echo "ARCH_POWER" > /sys/kernel/debug/sched_features

----------------------------

My actual lulzactiveq settings:

cpu_down_rate:13

cpu_up_rate:13

debug_mode:0

dec_cpu_load:65

down_sample_time:25000

dvfs_debug:0

hispeed_freq:600000

hotplug_freq_1_1:700000

hotplug_freq_2_0:400000

hotplug_rq_1_1:400

hotplug_rq_2_0:320

hotplug_sampling_rate:40000

ignore_nice_load:1

inc_cpu_load:85

pump_down_step:1

pump_up_step:1

screen_off_min_step:14

up_sample_time:50000

--------------------------

Lots of cherrypicks from ThunderBolt scripts

--------------------------

As I said before, I've a lot of other tweaks, but these was more for battery.

Enviado de meu GT-I9100 usando o Tapatalk 2
[Galaxy S II Q&A, Help & Troubleshooting] readon1:
What's a good voltage for the gpu at 100mhz? The default one?
[Galaxy S II Q&A, Help & Troubleshooting] czacha234:
Hiya,

After I flashed Siyah 4.1.5 and setting "performance" profile in ExTweaks, I have lost happtic feedback/vibrations in my phone. Changing the settings in "system settings" doesnt give any effect. Is there any solution or that is how kernel and the profile works? Thanks for any suggestions.
[Galaxy S II Q&A, Help & Troubleshooting] Mario1968:
Thank you Tungstwenty, I'm still experiencing this bug, the last time yesterday, seems to me that the kernel can't recover from a signal loss, then when I'm on a poor signal zone (or absent one) when I moving out that zone, the phone remain without signal and for me the only cure is a reboot. Now I try your settings to view if fix it for me too.

Mario

Edit: I've used GetRIL some time ago to view if this app fix my issue, so I've the RIL aligned with the modem (XXLPX).

This is my profile from now on:

GPUFREQ1=66

GPUFREQ2=100

GPUFREQ3=133

GPUFREQ4=267

GPUVOLT1=850

GPUVOLT2=900

GPUVOLT3=950

GPUVOLT4=1050

GPUTHRESHOLD1UP=80

GPUTHRESHOLD2DOWN=30

GPUTHRESHOLD2UP=85

GPUTHRESHOLD3DOWN=50

GPUTHRESHOLD3UP=90

GPUTHRESHOLD4DOWN=80

min_bl=50

min_gamma=0

max_gamma=24

rate=100

enable_mask=3

chargecurrent=1

logger=on

secondcore=hotplug

scheduler=sio

scaling_governor=pegasusq

load_l1=20

load_h0=30

load_rq=20

min_rq=2

freq_min=200000

install_root=on

mov_hysti=5

suspend_freq=500000

user_gamma_adjust=0

blnww=off

cpustepcount=16

notification_enabled=off

notification_timeout=0

led_timeout_ms=1000

bln_effect=0

touchkey_brightness=3000

led_fadeout=on

led_on_touch=off

cpu_undervolting=1

smooth_level0=4

scaling_max_freq=1200000

scaling_min_freq=200000

usb_mode=default

GENTLE_FAIR_SLEEPERS=off

default_stats=off

mdnie_shortcut_enabled=on

cfs_tweaks=0

mali_touch_boost_level=1

soundgasm_hp=3

Inviato dal mio Galaxy S2 con Tapatalk2®

XWLPF Stock

Siyah 4.1.5

Jkay V14.1
[Galaxy S II Q&A, Help & Troubleshooting] rakeshishere:
The kernel needs more focus on stability and bug fixes instead of addition of new features which keeps breaking few things and introducing more problems.

When i mention stability, I'm not referring to UV/OC but any new features has to implemented in major versions/revisions of kernel

Just my 2 cents. :)
[Galaxy S II Q&A, Help & Troubleshooting] gorneman:
http://xdaforums.com/showpost.php?p=31756141&postcount=13207

liblight modified to prevent touchkeys led lightning up when brightness change in cm 9.1
[Galaxy S II Q&A, Help & Troubleshooting] topiratiko:
Many40 u in here?

Sent from my AT&T Samsung Galaxy SII

CM 9.1/Siyah 4.1.5/PegasusQ/Noop
[Galaxy S II Q&A, Help & Troubleshooting] Phalcore:
Hello, im trying to create 2ndrom in my S2. There is log when i try to "Wipe 2ndROM data/cache"

CWM-based Recovery v6.0.1.2-Siyah

Please wait...

Formatting 2ndROM data...

Creating 2ndROM data for the first time...

This will take long...

E:formar_volume: make_extf4fs failed on /mnt/.secondrom/.secondrom/data.img

Error formatting 2ndROM data!

Formatting 2ndROM cache...

Creating 2ndROM cache for the first time...

E:format_volume: make_extf4fs failed on /mnt/.secondrom/.secondrom/cache.img

Error formatting 2ndROM cache!
[Galaxy S II Q&A, Help & Troubleshooting] Many40:
Yes, I'm here. So, you need to make a init.d script (file name eg touchfreq) with following content:

/sbin/busybox sh
su
kmemhelper -n `grep "^$(cat /proc/kallsyms | grep ' mov_hysti$' | cut -c1-4).* level\." /proc/kallsyms | grep -o "level.*"` -t int 14

Additionally make sure that:

- script is placed in /system/etc/init.d folder

- permissions are set to 755

- file ownership and group membership are ROOT

- script doesn't contain any DOS line endings (use Notepad++ PC app for that)

- the las two digit "14" in this command sets touch freq to 200 MHz (with 16 frequency steps). This is what I'm using to save some more juice. In your case you need to change it to "8" means 800 MHz.

Enjoy. Regards

Ps Big thanks for Tungstwenty for providing me this command with kmemhelper.
[Galaxy S II Q&A, Help & Troubleshooting] Phalcore:
Anyone help me?
[Galaxy S II Q&A, Help & Troubleshooting] topiratiko:
I copied and pasted and changed 14 to 8 and changed perm to rwx rwx rwx. Its not working. Any ideas?

Edit. THINK I got it. What would value for 1ghz be? 6?

Sent from my AT&T Samsung Galaxy SII

CM 9.1/Siyah 4.1.5/PegasusQ/Noop
[Galaxy S II Q&A, Help & Troubleshooting] Many40:
Yes, but still if you have 16 freq steps. General rule is as follows: you count from the highest frequency to the lowest assigning the first freq value "0", the second lower "1" etc
[Galaxy S II Q&A, Help & Troubleshooting] nihilista:
Same problem here (otg cable with stick), but sometimes it switches back, some time it doesnt and if i try to manually reconnect it says "no sim", after reboot all fine again...
[Galaxy S II Q&A, Help & Troubleshooting] jegormeister:
do you have more than ~2GB of free space on internal storage?

Tapatalked
[Galaxy S II Q&A, Help & Troubleshooting] CamoGeko:
Need to have at least 3GB for a successful installation of 2nd ROM.

Spun from a newly RENOVATED One X running on NCX kernel.
[Galaxy S II Q&A, Help & Troubleshooting] karthikcs:
I had the same combo of xwlpt with Siyah. And had exact same issue. I changed radio to lq6. But problem still persisted. I used to get signal dropouts almost once a day.

I recently changed to CM10 with Siyah 4.1.5. The problem is gone.
[Galaxy S II Q&A, Help & Troubleshooting] Lady_Chloe:
I'm having a small problem with the latest version 4.1.5. I was using 3.5.2 before and it did not happen in that version.

Whenever I plug in the charger, the touch is shaky, you can touch and hold for example on the home screen and it will be shaking. I remember this happening in old kernel versions, then it went away but now it's back. Is there anything I could tweak to fix this issue or do I need to wait until GM fixes it?
[Galaxy S II Q&A, Help & Troubleshooting] R3Map:
What ROM are you on? I have noticed the same on CM10, but not on CM9. I also see people in the CM10 thread complaining about a jittery screen when on charge. Seems more like a ROM issue to me than a kernel issue.
[Galaxy S II Q&A, Help & Troubleshooting] topiratiko:
Thanks again bro. This improved smoothness on pegasusq it'll do until project butter arrives for sgs2

Sent from my AT&T Samsung Galaxy SII

CM 9.1/Siyah 4.1.5SE1/PegasusQ/Sio
[Galaxy S II Q&A, Help & Troubleshooting] bobdoblo:
Same on NeatROM and Wanamlite Sammy based ROMS both LPX running siyah 4.1.4
[Galaxy S II Q&A, Help & Troubleshooting] Christiancs1969:
Are you using stock charger ?

I don't have this trouble until I use my defy charger by mistake when I use Samsung stock charger its fine

RR 307 siyah
[Galaxy S II Q&A, Help & Troubleshooting] Mario1968:
Here with stock charger and stock XWLPF with Siyah 4.1.5 I have the same issue of bouncing screen when still touch the screen and became very strange typing with swipe the upper character of the keys because the touch are recognized as little swipe up/down.

Any trick to patch this? Maybe with init.d script?

Thanks in advance

Mario

Inviato dal mio Galaxy S2 con Tapatalk2®

XWLPF Stock

Siyah 4.1.5

Jkay V14.1
[Galaxy S II Q&A, Help & Troubleshooting] luizlee86:
Does anyone have a valid link to download Kernel Cleaning Script? The links I found are all broken...

I'm having some issues and I wanna try to run the KCS.

Thanks in advance!
[Galaxy S II Q&A, Help & Troubleshooting] Mario1968:
For you mate;)

https://www.dropbox.com/s/y8yjbeug2t1schs/Ultimate_Kernel_Cleaning_Script_v2.6.5.zip

Inviato dal mio Galaxy S2 con Tapatalk2®

XWLPF Stock

Siyah 4.1.5

Jkay V14.1
[Galaxy S II Q&A, Help & Troubleshooting] luizlee86:
Thanks a lot! I just found a G2Wiper too..

Well... for now it looks like the problems are gone. Will give it a time to see if everything is ok.

Thanks again!
[Galaxy S II Q&A, Help & Troubleshooting] Lady_Chloe:
I'm using the stock charger and running Spike pure ICS, which is based on stock Samsung roms. I have tried a blackberry and a Sony charger, with the same results. Also, certain range of Siyah kernel versions do not have this problem.
[Galaxy S II Q&A, Help & Troubleshooting] beckdo:
I have XWLPX stock rom, and former I had cd-root kernel. I flashed the siyah 4.1.5 kernel, after that my back "botton" doesn't work. What can I do?
[Galaxy S II Q&A, Help & Troubleshooting] droiduzr2:
Some help please.

I tried installing Siyah 4.1.5 but my phone will boot up and show the Siyah logo then just turn off or not boot into the rom. The screen goes blank.

I am running ResRemix 9.7 ICS 4.0.3

This is what I have done.

1. I installed Siyah via Odin = to boot up

2. install via cwm file= fail to boot up

I used the kernel script cleaner.

I also used fixed permissions with Siyah.

Any ideas why my phone will NOT boot into the ROM with Siyah installed?

thanks ( yes I tried to find info)
[Galaxy S II Q&A, Help & Troubleshooting] pilgrim011:
So, you are saying that everything is fine when you install Siyah via Odin (phone is booting), but when you install Siyah via CWM phone is not booting?

But, if you already installed Siyah using Odin, why are you reflashing the same kernel through CWM?
[Galaxy S II Q&A, Help & Troubleshooting] droiduzr2:
No.

I tried with Odin and CWM = same result, phone does not boot up. It gets to the Siyah logo screen then it goes black (or powers off)
[Galaxy S II Q&A, Help & Troubleshooting] pilgrim011:
Try this: restore your previous configiration (with nandroid) and reflash Siyah, but please, DO NOT use kernel cleaning scripts. They often delete some stuff from ROM and that missing stuff may prevent ROM from booting up.
[Galaxy S II Q&A, Help & Troubleshooting] droiduzr2:
I don't have a nandroid backup.

The first time I did it I did NOT use the kernel cleaning script so I tried that after and both failed.

It really is odd.
[Galaxy S II Q&A, Help & Troubleshooting] pilgrim011:
Wipe cache and dalvik cache?
[Galaxy S II Q&A, Help & Troubleshooting] droiduzr2:
I did that also.
[Galaxy S II Q&A, Help & Troubleshooting] bobdoblo:
Yes stock charger, phone is only 6 weeks old too.

The shakiness happens on the browser mainly.

Sent from a telephone
[Galaxy S II Q&A, Help & Troubleshooting] Christiancs1969:
It says in the manual that came with the phone that the could phone can become unstable if used while charging. Maybe only some people suffer with this prob for me it fine siyah 415

RR 307 siyah
[Galaxy S II Q&A, Help & Troubleshooting] ii7Stryker:
I don't know if it is a kernel issue but right after my battery reaches 10%, the cell gives one warning and then turns off. After starting it manually it stays ON till 1%.

I am on cm 9.1 and Siyah 4.1.2+ .
[Galaxy S II Q&A, Help & Troubleshooting] Sun90:
its not an issue but a safety feature ma8:)
[Galaxy S II Q&A, Help & Troubleshooting] ii7Stryker:
Thanks for replying, so my guess was right.

Anyway to way to decrease it to 5% ?
[Galaxy S II Q&A, Help & Troubleshooting] pilgrim011:
I think it depends on the ROM - my phone doesn't turn off till 0% on stock 4.0.3 and RR Remix 2.6.1. 4.1.5, of course.