Develop Bugs

Xperia Arc bootloops every 40-60 hours

Hello guys,
Since a month or a bit less my Arc bootloops every 40-60 hours, mostly while charging. It started without that I changed anything on the device like a new mod or so
It plays the bootanimation again and again and just a batterypull can fix it.
What I did so far:
- Reflashed it without wiping data, didn't help
Mods I applied:
- DooMKernel V15
- Statusbar widgets Indi V2
- Removed Junk Apps
- SuperCharger V6
Setup:
- Overclocked to 1.4GHz
- Underclocked to 122MHz, set it back to 245MHz today to see if it helps
- Undervolted -100mV
- Worked perfect like that for 4 months
I ran out of ideas on how to fix it and hope you guys can help me, as the bug is really annoying, I wake up if that happens at night while charging, which happens most of the time
If you have any idea, post it
Regards,
Flo
Sent from my iPad 2 using Tapatalk

Full wipe is recommended after sometime use personal opinion.
Sent from my MT15i using Tapatalk

Yeah, but I got tons of stuff on it that I don't want to lose.
And I did never do that on my X10 for 7 months and it was never a problem, then I got the Arc...
Sent from my iPad 2 using Tapatalk

Flo95 said:
Hello guys,
Since a month or a bit less my Arc bootloops every 40-60 hours, mostly while charging. It started without that I changed anything on the device like a new mod or so
It plays the bootanimation again and again and just a batterypull can fix it.
What I did so far:
- Reflashed it without wiping data, didn't help
Mods I applied:
- DooMKernel V15
- Statusbar widgets Indi V2
- Removed Junk Apps
- SuperCharger V6
Setup:
- Overclocked to 1.4GHz
- Underclocked to 122MHz, set it back to 245MHz today to see if it helps
- Undervolted -100mV
- Worked perfect like that for 4 months
I ran out of ideas on how to fix it and hope you guys can help me, as the bug is really annoying, I wake up if that happens at night while charging, which happens most of the time
If you have any idea, post it
Click to expand...
Click to collapse
Those are your problems right there. Try by removing overclock, then undervolt and if all else fails go back to stock kernel.

Ok, I'll try that.
But it was stable for 4 months, that's why I didn't touch that yet.
And I noticed when the CPU can't handle something, like 2GHz oc, the phone freezes for a min and restarts then in a normal reboot.
But I definitly try removing that after I know if the bug appears with the min cpu speed of 245MHz.
Sent from my iPad 2 using Tapatalk

Try the 1.6 ghz kernel from doomlord. It is possible that your cpu us a little fried with the 2ghz boot. Might just be more preferred then removing overclock, also i noticed that 1.4 doesn't really give give than 1.3. and only switch to higher values when you REALLY need them
Sent from my LT15i using xda premium

Thought the 1.6GHz kernel is for devices that don't boot wth the 2GHz version which works perfect on mine, it even runs @ 2GHz for a while.
Sent from my LT15i using XDA Premium App

Flo95 said:
Thought the 1.6GHz kernel is for devices that don't boot wth the 2GHz version which works perfect on mine, it even runs @ 2GHz for a while.
Click to expand...
Click to collapse
That doesn't mean that it can handle it. Prolonged stress to the processor can cause damage, so the FIRST thing to check when you see odd behavior is this (kernel, overclock, underclock, undervolt).

I won't stress test it @ 2GHz, don't want to burn it ^^
If it isn't fixed with 245MHz min speed I'll flash the 1.6GHz kernel and check it.
Otherwise I'll flash the stock one back, if it still happens then I ask for a exchange Arc. (It has the crack in the case, too)
Sent from my LT15i using XDA Premium App

Flo95 said:
I won't stress test it @ 2GHz, don't want to burn it ^^
If it isn't fixed with 245MHz min speed I'll flash the 1.6GHz kernel and check it.
Otherwise I'll flash the stock one back, if it still happens then I ask for a exchange Arc. (It has the crack in the case, too)
Sent from my LT15i using XDA Premium App
Click to expand...
Click to collapse
For the Arc (LT15) anything above 1 GHz is potentially damaging, just saying.
The spike during boot is not much of a big deal, but running it constantly at 1,4 for example, could cause issues.
So be careful. And I don't think anyone will give you a new Arc because you can't overclock enough the one you have!

It's totally stable @ 1.4GHz and runs at lower voltage than stock 1GHz, so there shouldn't be any damage.
If the CPU (is damaged or) can't handle sth the phone freezes for a min and restarts then, never had that @ 1.4GHz.
I don't want a new Arc for more oc, just in case I can't fix the bootloop issue. For oc mine is enough for me
Sent from my LT15i using XDA Premium App

Flo95 said:
It's totally stable @ 1.4GHz and runs at lower voltage than stock 1GHz, so there shouldn't be any damage.
If the CPU (is damaged or) can't handle sth the phone freezes for a min and restarts then, never had that @ 1.4GHz.
I don't want a new Arc for more oc, just in case I can't fix the bootloop issue. For oc mine is enough for me
Sent from my LT15i using XDA Premium App
Click to expand...
Click to collapse
If it were "totally stable", you wouldn't have started this thread though...
And what you describe is not the only indicator that the CPU can't handle your settings. Actually, bootloops are quite common for all sort of overclock and undervolt related issues.
Again, try running the phone at 1 GHz and see if the bootloops still occur.
If yes, try going back to stock kernel and observe again.
It's the only way to see if something is really the matter with the hardware.

Yes, well, totally stable was related to using it, works perfect then.
Just after the timegrame it restarts while charging and while charging it doesn't bump up the CPU speed like when doing heavy tasks like browsing. That's why I am so confused, the 50 hours are the time when it happens, if it would be uv or oc related it should happen before that 50 hours timeframe, shouldn't it?
Exam tomorrow, on Wednesday or the day after I should have time and then I flash the stock kernel again.
Atm it runs perfect for 30 hours now with 245-1401MHz, uv -100mV and did heavy usage today.
Why happens stuff like that when you're busy with school, damn
But thanks for your help untill now.
Sent from my iPad 2 using Tapatalk

Update:
It's running for 62 hours now, with 245-1401MHz, seems like the 122MHz caused it, but not sure, it gotta survive some more days to be totally sure.
But why caused 122MHz bootloops after a long time where it was stable?
So happy, that I don't need a new device, if it keeps stable
Thanks again for your help
Sent from my iPad 2 using Tapatalk

Another - bad - update:
After ~75 hours of uptime I updated some apps, got a few FCs and then it bootlooped, I remove the oc now...
Maybe it needs more voltage after some time of use with oc?
EDIT:
Damn, I really can feel the loss of the 400MHz, fresh started phone lags, never had that with oc.
Horrible
Ok, that's because of a background progress I guess. 20Mflops @ 1GHz and 29 @ 1.4GHz
EDIT 2:
Increased the voltages +25mV, hope that helps, last step before flashing stock kernel.
Most speeds are undervolted -75mV now, but some are @ -175mV like 800-1024MHz now, had -200mV from one of the CM7 kernels before.
Using it @ 122-1401MHz now.
Voltages:
MHz mV
122 825
245 825
368 825
460 875
576 925
652 975
768 975
806 1025
921 1025
1024 1025
1113 1075
1200 1125
1305 1175
1401 1175

That did the trick.
Happy user again
But it's strange that I had to increase the voltages imo
Anyways, works perfect again.
Thread can be closed

whoops missed page 2 sorry
Pvy.

[Q] R800x, Post your Overclock CPU speeds below....

OK, so I currently have my PLAY set to 1.2ghz. My first android phone I OCd from 600mhz to 1ghz and one day while playing a game I heard a loud pop noise, then my phone shut off and that was that... toast. So I have been extremely leary of overclocking now. I am aware there are users who have OCd their phone to 1.4+
My question is how safe is when I use No frills to OC is it ramping up the volts to get that extra power. Also according to the Snapdragon layout it lists the S2 in our phones as capable of 1-1.5ghz... does this mean I could technically go up to 1.5 and be OK? I have a large 3600mha mugen battery, so thats not an issue, but what I am afraid of is popping my phones brains out...
http://en.wikipedia.org/wiki/Snapdragon_(system_on_chip)
Look at Snapdragon S2 section
MSM8255
Also, it sayd for phones that use the above chip.. GSM only for Xperia PLAY... if that is the case does that mean R800x users are on a differerent chip? And if so what chip is it? Thanks in advance.

jgregoryj1 said:
OK, so I currently have my PLAY set to 1.2ghz. My first android phone I OCd from 600mhz to 1ghz and one day while playing a game I heard a loud pop noise, then my phone shut off and that was that... toast. So I have been extremely leary of overclocking now. I am aware there are users who have OCd their phone to 1.4+
My question is how safe is when I use No frills to OC is it ramping up the volts to get that extra power. Also according to the Snapdragon layout it lists the S2 in our phones as capable of 1-1.5ghz... does this mean I could technically go up to 1.5 and be OK? I have a large 3600mha mugen battery, so thats not an issue, but what I am afraid of is popping my phones brains out...
http://en.wikipedia.org/wiki/Snapdragon_(system_on_chip)
Look at Snapdragon S2 section
MSM8255
Also, it sayd for phones that use the above chip.. GSM only for Xperia PLAY... if that is the case does that mean R800x users are on a differerent chip? And if so what chip is it? Thanks in advance.
Click to expand...
Click to collapse
We're on the MSM8655 instead of the 8225. iirc, the difference is that it's cdma oriented as opposed to gsm
Each chip is different in what it can handle, so your best bet is to test it out, slowly. When your system starts to act funky, step down the voltage/speed levels.
Pax
Ps. Tried running mine @ 2 ghz once and was promptly rewarded with a random reboot. It takes some time, but with mine I've figured out our can run 1.6 with no issues (I tend to keep it at to stock levels because my battery sucks )
Sent from my R800x using Tapatalk 2

paxChristos said:
We're on the MSM8655 instead of the 8225. iirc, the difference is that it's cdma oriented as opposed to gsm
Each chip is different in what it can handle, so your best bet is to test it out, slowly. When your system starts to act funky, step down the voltage/speed levels.
Pax
Ps. Tried running mine @ 2 ghz once and was promptly rewarded with a random reboot. It takes some time, but with mine I've figured out our can run 1.6 with no issues (I tend to keep it at to stock levels because my battery sucks )
Sent from my R800x using Tapatalk 2
Click to expand...
Click to collapse
K, thank you Pax for the feedback.

Just thought I would open this to everyone on R800x, interested if people could point there OC status below.
Mine is still on 1.2ghz. with Performance and BFQ

Highest I can go is 1.6, but I keep it around stock or slightly underclocked, with SetCPU profiles that increase to 1.2 for games and internet apps. smartassv2 and sio for governor and scheduler.

I heard that underclocking can end up reducing battery life over time. Is there truth to this or is it just a myth?

1.6Ghz and Performance when the screen is on.
Stock when the screen is off.
Battery last all day, but I don't use heavily.
Sent from my R800x using xda app-developers app

Solar.Plexus said:
I heard that underclocking can end up reducing battery life over time. Is there truth to this or is it just a myth?
Click to expand...
Click to collapse
There's a large number of things that can adversely affect battery life, but by the time it becomes a problem, you'd most likely be on a new phone, anyway.
Sent from my SCH-I500

I tried my r800x at 1.6ghz (running Cyanogenmod 9 with stock kernal), and I was stuck in a boot loop that I had to fix through CWM Recovery. I am now running stable at 1.4ghz.

Yeah I'm on my 2nd xplay after I tried to oc to 1.6. My phone got extremely hot so I pulled the battery to let it cool. Upon booting my touch screen was non responsive. I don't ever go past 1.4 now.
Sent from my Xperia Play

Umm I got a r800x and the Max I can clock too is 1GHz but I see people up to 1.6 how do you do that?
Sent from my GBTweaked R800x using tapatalk 2

crazymonkey05 said:
Umm I got a r800x and the Max I can clock too is 1GHz but I see people up to 1.6 how do you do that?
Sent from my GBTweaked R800x using tapatalk 2
Click to expand...
Click to collapse
Custom kernel such as LuPuS or DooMKerneL

1.6 min and max. SIO, with performance governor, then I switch it after 30% and lower to powersave sio, 804-416 Max or whatever those numbers are.
Sent from my R800x using xda app-developers app

savage24x said:
1.6 min and max. SIO, with performance governor, then I switch it after 30% and lower to powersave sio, 804-416 Max or whatever those numbers are.
Sent from my R800x using xda app-developers app
Click to expand...
Click to collapse
Good luck with avoiding frying your phone

R800a 1.4 GHz, sio, ondemand, with Lupus GB v5 + Xperia NXT

My play can stable oc to 1.8ghz
Sprint Samsung Galaxy S II Epic 4G Touch w/ Stock 4.0.4
Xperia Play R800X w/ supercharged stock 2.3.3 and doomkernel

Running the LuPuSv7 Kernel on AOKP Milestone 6.
Max CPU: 1612MHz
Min CPU: 249MHz
Scaling Governor: Superbad
~Set to Boot~
Runs SUPER smooth!
Battery performance; half of the day under heavy use/gaming, up to 2.5 days when I'm only calling and texting.

Undervolting CPU - More battery...

Is it worth it?
How do I go about testing the stability of the phone ( I don't want to reduce clock speed )

If you want your phone to work perfectly without loosing speed it's not worth it ( change wouldn't be noticeable )

Fears said:
If you want your phone to work perfectly without loosing speed it's not worth it ( change wouldn't be noticeable )
Click to expand...
Click to collapse
Does undervolting really lower performance? You're sure you're not thinking about under clocking?
Sent from my HTC One X using Tapatalk 2

ben-fisher-bro said:
Is it worth it?
How do I go about testing the stability of the phone ( I don't want to reduce clock speed )
Click to expand...
Click to collapse
I predict a "my HOX isn't working right, I blame HTC" thread shortly after you try this.
But really, what are your expected gains from doing this?

Tingelholm said:
Does undervolting really lower performance? You're sure you're not thinking about under clocking?
Sent from my HTC One X using Tapatalk 2
Click to expand...
Click to collapse
If you're not sure about what you are doing it won't lower performance it will probably result in a lot of crashing and error messages, I personally think it's not worth it for the amount of battery you could gain ( few minutes )

Fears said:
If you're not sure about what you are doing it won't lower performance it will probably result in a lot of crashing and error messages, I personally think it's not worth it for the amount of battery you could gain ( few minutes )
Click to expand...
Click to collapse
Well, I have had it undervolted with -150mv in a week or something and I haven't experienced any errors and crashes. I don't have it for the battery, but for the temps.
Sent from my HTC One X using Tapatalk 2

I've been under voting my s3 747m for over two weeks now, between 75 to 300mv lower, at 1.89 I'm running at 1200mv, although I'm only running it at 1.5.
To test it I use Stability Test app, on scaling for 3 hour runs, it will stress all frequencies.
If you find a crash you increase the voltage at that frequency, BUT, the best way to test it, instead of using scaling test, use the burn in one, but manually set your speed and let it stress test XX frequency for a long period, this Is where I found the most of my crashes.
This isn't an easy or a quick job, it'll require a good weekend of mucking around. I have all my speeds down to 5mv increments instead of the stock 25 the apps give you.
But so far, I don't get voltage related crashes, only the random KP caused by cm10 bugs.
If people are interested in the voltages for this phone I could post them
Sent from my SAMSUNG-SGH-I747 using xda premium

I'm uv @ 1137 and oc @ 1.6 using arhd 9.1.0 faux 006u kernel and the phone is running better than ever
I use mhl hdmi with sixaxis and the battery used to die in a hour and it got really hot but now I played for a hour before work and it used 40% battery and it was warm but not overheating
But before u go playin around with things look into it all cores are different and behave different
This thread will tell u everything it even has a gragh on wot chips can do what
http://forum.xda-developers.com/showthread.php?t=1815466
Sent from my HTC One X using xda premium

Sent from my HTC One X using xda premium

Undervolting Damage?

Can undervolting, in any way, make ure phone heat up more or loose more battery?
/==(CyberScopes)==\

I undervolted 50mV and my phone is still okay

Wats the best undervolting level?
/==(CyberScopes)==\

I don't think it will damege the hardware, but the software may not boot due to the CPU not having enough energy to process all the bits of data there for having to restore a nandroid or ftf. But I don't know about a safe voltege as I am on a stock kernel and locked bootloader
Sent from my GBTweaked v7.1 r800x using Tapatalk 2

Doomlord said -100mv is stable for him. But I not dare so I go till -50mV

If i try undervolting, my battery life goes to hell.
Its different from phone to phone.
Sent from my R800i using xda app-developers app

Ive got -100mv and i cant tell if its givin more or less batt.
/==(CyberScopes)==\

Undervolting will never harm the phone, though it may prevent it from booting (if the undervolt is set on boot), or make the phone sporadically freeze/reboot. Some frequencies can undervolt more than others, and each phone's tolerance will vary as well. I've been able to go down -225mV on the 1024MHz frequency (or even -250mV on 1017MHz), though that's the farthest any of them has gone.

Yeah I've heard of overclocking causing damage, but never undervolting. It may cause some issues, but actual damage? I don't think so.

-Undervolting should GAIN BATTERY.
-Going too low might make your device freeze or not boot.
-Because of the way that you are actually taking away the energy this actually makes the phone slightly cooler.
- I myself don't like messing up with the voltages, there shouldn't be a very huge battery difference (Only about 1-6%) and I prefer stability.
-If you are still thinking of doing so then use a CPU stress app and test on every single step that you go down by for at least 20 minutes.
Sent from my R800i using xda app-developers app

Anybody know any good undervoltages for 1.6ghz overclock? I need to overclock this high to get my games going.

chery2k said:
Anybody know any good undervoltages for 1.6ghz overclock? I need to overclock this high to get my games going.
Click to expand...
Click to collapse
I'm able to set 1.6GHz to 1200mV stable, but it varies from phone to phone. (1200mV is the same as stock 1GHz voltage btw )

is undervolting really necessary?

CyberScopes said:
is undervolting really necessary?
Click to expand...
Click to collapse
No as I earlier explained it only saves about 5% battery and heat.
Sent from my Xperia Play using xda app-developers app

sewer56lol said:
-Undervolting should GAIN BATTERY.
Click to expand...
Click to collapse
That's what you want it to do, and that is the usual result of moderate undervolting, but that is not always the result.
The phone checks itself (similar to parity checks). Excessive undervolt can make the phone cpu do the same thing over and over until it comes out right

electricpete1 said:
That's what you want it to do, and that is the usual result of moderate undervolting, but that is not always the result.
The phone checks itself (similar to parity checks). Excessive undervolt can make the phone cpu do the same thing over and over until it comes out right
Click to expand...
Click to collapse
undervolted -100 my HTC desire HD. Phone got rather hot.
Switched back immediatelly...
Why's that?

Odp: Undervolting Damage?
cimdahers said:
undervolted -100 my HTC desire HD. Phone got rather hot.
Switched back immediatelly...
Why's that?
Click to expand...
Click to collapse
It could have happened because your phone has gone to the highest possible frequency, I'm not sure about it though.
How do I change the voltage in android without having to edit the kernel?
Wysłane z mojego R800i za pomocą xda premium

I agree that the safest level of undervolting is -50 or even -75 but anything beyond -100 would make the device restart when it hits the min clock speed.

Can somebody give me tutorial how to undervolting custom kernel? When using/try doomkernel n lupus still can't see a chance to uv. N i don't want to use setxperia.
Sent from my R800a using Tapatalk 2

[Q] CPU Temperature exceeding 80°C! How dangerous?

Hi guys,
I understand that some heat when running resource intensive applications and games is to be expected but I believe I've passed into the danger zone, so to speak. When playing XCOM my CPU temperature quickly exceeds 80°C. From my googling on the matter I have come to assume that a temperature as high as 80°C is dangerous for the hardware of the device, but I have had trouble finding upper threshold limits for the model itself.
I guess my questions are as follows:
1) How damaging would running the CPU at 80°C for an extended duration (1hr +) be?
2) What would you consider the max acceptable CPU temperature to be?
3) Assuming it is as bad as thought, what are my options to reduce the CPU temperature, short of avoiding the problem applications? Underclocking seems to be a common suggestion, but I get the feeling that XCOM, or similarly taxing applications, may just fail to run or become incredible sluggish under such constraints.
My device is rooted and running Lean Kernel v2.4 along with the w03Slim ROM. Found here: http://forum.xda-developers.com/showthread.php?t=2638116
I've done similar test runs in the Temasek kernel with the recommended configurations through Trickster Mod and there is no difference, the CPU still exceeds 80°C when playing XCOM. After a week or so of googling, searching the forums, and digging through device manuals I feel like I'm spinning my wheels.
Any insight or advice you all might have is greatly appreciated.

Solved!
http://forum.xda-developers.com/showpost.php?p=52464294&postcount=2495
Sent from my SM-N900T using XDA Premium 4 mobile app

Does not exceeds to 80c now?

You can try a custom kernel, i would recommend you BioShock kernel, with conservativex, max freq 2.2 ghz and undervolt 25 mV... No more over warming for me, great performance and battery life
Sent from my TWEAKED KITKAT note 3 powered by BioShock kernel

dramitt_live said:
You can try a custom kernel, i would recommend you BioShock kernel, with conservativex, max freq 2.2 ghz and undervolt 25 mV... No more over warming for me, great performance and battery life
Sent from my TWEAKED KITKAT note 3 powered by BioShock kernel
Click to expand...
Click to collapse
Agree with this post, conservativex is a great governor to keep your cpu in check and not over throttle itself, also check out my thread I made here awhile back and apply the 8th post down. It really helped keep the temp down on my phone when playing graphically intensive games like dead trigger 2,riptide gp2 etc. Also if you have trickster mod or faux clock(really recommended) you can scale down your max frequency, that should really help keep it cooler and you won't see much of a performance drop (if any) while gaming or heavily using your phone.
Sent from my SM-N900T using xda premium

d12unk13astard said:
Agree with this post, conservativex is a great governor to keep your cpu in check and not over throttle itself, also check out my thread I made here awhile back and apply the 8th post down. It really helped keep the temp down on my phone when playing graphically intensive games like dead trigger 2,riptide gp2 etc. Also if you have trickster mod or faux clock(really recommended) you can scale down your max frequency, that should really help keep it cooler and you won't see much of a performance drop (if any) while gaming or heavily using your phone.
Sent from my SM-N900T using xda premium
Click to expand...
Click to collapse
Does it works with KitKat?
Sent from my TWEAKED KITKAT note 3 powered by BioShock kernel

dramitt_live said:
Does it works with KitKat?
Sent from my TWEAKED KITKAT note 3 powered by BioShock kernel
Click to expand...
Click to collapse
Yes I have applied it on kk roms too, phone idles and runs much cooler after applied.
Sent from my SM-N900T using Tapatalk

d12unk13astard said:
Yes I have applied it on kk roms too, phone idles and runs much cooler after applied.
Sent from my SM-N900T using Tapatalk
Click to expand...
Click to collapse
Sounds great.. But i have a question.. Some settings are for ondemand based govs wich are unstable with kk... So would you recommend to try this with interactivex? Or wich one. TIA
Sent from my TWEAKED KITKAT note 3 powered by BioShock kernel