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[Q] Random Reboot with +1.5Ghz OC Kernels

Ok, sorry if this seems like a stupid question but... I have flashed/tested all of the Tiamat Kernels onto my xoom and it seems that I can only run the 1.4 Ghz Kernel with no random reboots. So I thought that if i download the higher 1.5Ghz or the 1.6Ghz and just under-clock it to 1.4Ghz that should stop it from doing random reboots, but sadly it doesnt and I still get random reboots even with Setcpu Under-clocking it to 1.4Ghz. Now is this typical or am I missing or misunderstanding something? Is there a reason why I cant use the higher Kernels and Under-clock them to 1.4Ghz and get no random reboots? I am only asking because I flashed the Riptide and under-clocked it to 1.4Ghz and it really made my xoom feel much faster and nicer in my hands and would love to keep using the Riptide Kernel.
Thanks in advance,
-Dez

I have the same issues and have been wondering the same thing.

I have similar , with 1.6 with ums
only flashed to get ums , and had a few crash/reboots for the first time since i bought my xoom about a month ago.
what i could do with is a stock speed kernal with all the bells on !

nexan21 said:
I have similar , with 1.6 with ums
only flashed to get ums , and had a few crash/reboots for the first time since i bought my xoom about a month ago.
what i could do with is a stock speed kernal with all the bells on !
Click to expand...
Click to collapse
I too have noticed this, after reading your post I tried keeping the Kernels but with no OC and left it at 1.0Ghz and it still has random reboots. So is there something in the Higher Kernels that are causing it to be unstable regardless of what Ghz you clock it to?

watch setcpu at times. It doesn't matter what you set the clock at in setcpu it will still go to the max clock the kernel allows. I am not sure if it is a bug with setcpu or if it is just the way the kernel works. If you reboot your Xoom when setcpu is at 1ghz, then go and play with the xoom after reboot for awhile. Go back into setcpu and look under the info tab. You will see that the cpu has indeed been running the higher clocks then 1ghz at times. It doesn't run those higher clocks much but it does. Which is most likely why you are getting lockups or reboots. My Xoom seems to love the 1.5ghz kernel but hates the 1.6ghz one.

Funny I was on the same boat. Started out with 1.6...reboots. went to 1.4 no problems. Tried riptide. Got app force closes. Now on 1.5...stable once again. The thing is im not even using OC on any of them
Sent from my SGH-T959 using Tapatalk

tribalb said:
Funny I was on the same boat. Started out with 1.6...reboots. went to 1.4 no problems. Tried riptide. Got app force closes. Now on 1.5...stable once again. The thing is im not even using OC on any of them
Sent from my SGH-T959 using Tapatalk
Click to expand...
Click to collapse
The oc is in the kernal i think , i dont have setcpu installed but cpu still at times peaks at the max 1.504 ghz ac ording to
"Temp+cpu"
https://market.android.com/details?id=com.sanels.tempcpuv2&feature=more_from_developer

Hammerhead ROM with OCGPU - Stable at 1.6 GHZ

Morning all,
I am running the Hammerhead ROM with the OC GPU kernel. I have been able to run at 1.6 GHZ with no issues. When I push it to 1.7 GHZ I get alot of browser closes, hangs, and reboots.
Has anyone been able to run reliably at 1.7 GHZ with the OC GPU kernel, and if so are you doing anything special with voltages to get this to run reliably?
Thanks,
Steve

stevefxp said:
Morning all,
I am running the Hammerhead ROM with the OC GPU kernel. I have been able to run at 1.6 GHZ with no issues. When I push it to 1.7 GHZ I get alot of browser closes, hangs, and reboots.
Has anyone been able to run reliably at 1.7 GHZ with the OC GPU kernel, and if so are you doing anything special with voltages to get this to run reliably?
Thanks,
Steve
Click to expand...
Click to collapse
Each device and each Tegra chip are slightly different..some will run that fast without any problem, some can do it in bursts, while others will crash before you close SetCPU. It often has very little to do with settings.

I had the same issue as you. At 1.6, it has never rebooted, but at 1.7 it very consistently reboots or forces a close.

qsg001 said:
I had the same issue as you. At 1.6, it has never rebooted, but at 1.7 it very consistently reboots or forces a close.
Click to expand...
Click to collapse
I am going to fool around with voltages and see if I can get 1.7 Ghz to stabilize.

same here.. i had no reboots but some force closes when i really push the device with 1.7 ghz ( tiamat kernel&3.2) ... if depends on the load of the cpu i guess.. when i run quadrant test continuously it works without a problem even a non-stop half hour.. but when i open 15+ pages in theb browser it freezes and sometimes forse closes.. i assume the voltage management is not stable or enough for 1.7 ghz .. when its 1.6 its perfect.. ( to be honets none of this gpu and cpu overclocks are really necessary and effecting my everyday usage, its already a very fast and good device)

Hi guys!
Which app are you using to control the clock?

Schellin said:
Hi guys!
Which app are you using to control the clock?
Click to expand...
Click to collapse
SetCPU is the best for the Xoom, imho.
Sent from my GT-I9000 using XDA Premium App

Sorry man. It's been said before about the tegra and other procs, it's all luck of the draw. I am one of the lucky ones who can get stable at 1.7ghz but it won't work for everyone. I wish there was an easy fix that would make this work for you.

[Q] what is a safe overclock speed +temp?

well I just got my xoom and its overclockable to like 1.6ghz but I wannna make sure my device life won't go down, also what are good temps what should I try to keep the temperature under. Simply what temps are you guys getting
Thanks guys

Most people stay under 1.7 ghz because the processor becomes unstable (rebooting, freezing up, etc.). There has been zooms that don't overclock very well above 1.5 ghz so you will have to play with it and see what works well for you. If you get freezing, and rebooting then just dial it back until you get the sweet spot. As far as temp, unless you are a extreme power use you should not see temp's 100 degrees, I am a power user and rarely get above 98 degrees. Hope this helps?
Sent from my Xoom

johnny0911 said:
Most people stay under 1.7 ghz because the processor becomes unstable (rebooting, freezing up, etc.). There has been zooms that don't overclock very well above 1.5 ghz so you will have to play with it and see what works well for you. If you get freezing, and rebooting then just dial it back until you get the sweet spot. As far as temp, unless you are a extreme power use you should not see temp's 100 degrees, I am a power user and rarely get above 98 degrees. Hope this helps?
Sent from my Xoom
Click to expand...
Click to collapse
Alright thanks buddy I'm currently at 1.2 and I'm in the 90s browsing and using YouTube
Oh what do you use for temp oh and also are you over clocked? Oh but I'm stable at 1.6 so idk how high to set it, what your opinion?

1.2 and your temp is at 90? I think your reading it wrong or something. I have mine at 1.6 and use it all day (even playing games) and it does not get to 90. What kind of case do you have it in? What rom/kernel are you using?

jucery said:
Alright thanks buddy I'm currently at 1.2 and I'm in the 90s browsing and using YouTube
Oh what do you use for temp oh and also are you over clocked? Oh but I'm stable at 1.6 so idk how high to set it, what your opinion?
Click to expand...
Click to collapse
no case using the new tiamat for xoom 2.2.2 it completely stable at 1.6 GHz but temps stay around 90-100 when using heavily. ambient temp is like 75, when i let it rest and its just locked its like 75-80

i run around 1.5 daily... with 1.6 for benchies...
temps are VERY cool for my tab... honestly it is astounding... my phone gets way hotter

jucery said:
no case using the new tiamat for xoom 2.2.2 it completely stable at 1.6 GHz but temps stay around 90-100 when using heavily. ambient temp is like 75, when i let it rest and its just locked its like 75-80
Click to expand...
Click to collapse
90 to 100? I have a otterbox defender case that completely encases my xoom, oc to 1.6, also on moray 2.2.2 and I have work really hard to get a temp of 98. Download battery monitor widget from the market (free or paid one) and see what your temp is. I think you are running a little hot.
Also, are you using a app to overclock or the built in setting under tiamat settings?
Sent from my Xoom

joshndroid said:
i run around 1.5 daily... with 1.6 for benchies...
temps are VERY cool for my tab... honestly it is astounding... my phone gets way hotter
Click to expand...
Click to collapse
Same here.
Sent from my Xoom

Another thing to check is your governor and wht is is set to (interactive, userspace, proformance, etc) if you have it set to proformance, you're gov will keep you at 1.6 all the time and could cause heat issues. Download a app called android system info (free in the market) and check your CPU info. I have provided a screenshot of what it looks like.
As you can see I'm at 1.2ghz only 21% of the time and 216, 58%.
https://dl-web.dropbox.com/get/Public/P20111026155145.png?w=640402e6
Sent from my Xoom

johnny0911 said:
90 to 100? I have a otterbox defender case that completely encases my xoom, oc to 1.6, also on moray 2.2.2 and I have work really hard to get a temp of 98. Download battery monitor widget from the market (free or paid one) and see what your temp is. I think you are running a little hot.
Also, are you using a app to overclock or the built in setting under tiamat settings?
Sent from my Xoom
Click to expand...
Click to collapse
Build in Tiamat setting, will download the app wait up

johnny0911 said:
Another thing to check is your governor and wht is is set to (interactive, userspace, proformance, etc) if you have it set to proformance, you're gov will keep you at 1.6 all the time and could cause heat issues. Download a app called android system info (free in the market) and check your CPU info. I have provided a screenshot of what it looks like.
As you can see I'm at 1.2ghz only 21% of the time and 216, 58%.
https://dl-web.dropbox.com/get/Public/P20111026155145.png?w=640402e6
Sent from my Xoom
Click to expand...
Click to collapse
Yeah i just came back from work my xoom was sitting at around 72 F without using it, do you Recommend using tiamat setting or setcpu or anything else. thanks +1

jucery said:
Yeah i just came back from work my xoom was sitting at around 72 F without using it, do you Recommend using tiamat setting or setcpu or anything else. thanks +1
Click to expand...
Click to collapse
I use the tiamat settings, I have not seen any reason to use anything else. 72 degrees is good when not in use for some time.
Sent from my Xoom

use the tiamat settings. I dont have my xoom in front of me but i keep it set on "on demand" i think. You xoom is running hot. I would lower it OC until you find the sweet spot for your heat issue. I think your xoom will run fine but you will start to kill the "life" of the xoom IMO.

NissanNick said:
use the tiamat settings. I dont have my xoom in front of me but i keep it set on "on demand" i think. You xoom is running hot. I would lower it OC until you find the sweet spot for your heat issue. I think your xoom will run fine but you will start to kill the "life" of the xoom IMO.
Click to expand...
Click to collapse
I think the reason he is running hot is do to his governor settings, when I first started playing with overclocking I noticed my xoom would run hotter when I would increase the preformance. But I agree if he is running 90 to 100 degrees regularly, there is a problem somewhere.
Sent from my Xoom

I have my Xoom overclocked to 1.2 and when I give it on 1.4 it becomes pretty unstable. Temp is always ok. So angry I can't have higher OC. :/

DomButcher said:
I have my Xoom overclocked to 1.2 and when I give it on 1.4 it becomes pretty unstable. Temp is always ok. So angry I can't have higher OC. :/
Click to expand...
Click to collapse
What rom and kernel are you using?
Sent from my Xoom

[email protected]
Temps is near 80, sometime it goes to 90-95 but that when I play some game/watch movie. Its pretty stable, never crashed and I ran a stress test from 100% to 0%.
Sent from my Xoom using xda premium

DomButcher said:
I have my Xoom overclocked to 1.2 and when I give it on 1.4 it becomes pretty unstable. Temp is always ok. So angry I can't have higher OC. :/
Click to expand...
Click to collapse
It's not really a race...the cpu is only rated to 1GH so anything you can squeeze out above that and still remain stable is gravy, don't you think? In Xoom as in life--YMMV.

[Q] How to test if an OC works on the TF?

I loaded the Blades 2 kernel on my TF along side the Revolver ROM.
How can I tell if the OC is safe and working? I am not sure if you stress test it or anything like you do on a Windows PC type device..

acdcking12345 said:
I loaded the Blades 2 kernel on my TF along side the Revolver ROM.
How can I tell if the OC is safe and working? I am not sure if you stress test it or anything like you do on a Windows PC type device..
Click to expand...
Click to collapse
I've found that, in overclocking several Android devices, more often than not if you have an unstable OC, the device will either fail to boot, or will crash constantly. If it's not doing that, you're likely fine.

Um, you're not OCed yet. You need to install setcpu or cpu master and crank up the clock. Clemsyn or Blades gives you the option to OC. It doesn't just OC for you.

lol, and learn from my mistake: when overclocking, don't check the option of "set on boot" untill you have tried overclocking at the Ghz level that you want to use. Believe me, you don't want a bootloop that can only be solved by flashing or restoring from a backup.

acdcking12345 said:
I loaded the Blades 2 kernel on my TF along side the Revolver ROM.
How can I tell if the OC is safe and working? I am not sure if you stress test it or anything like you do on a Windows PC type device..
Click to expand...
Click to collapse
I have done extensive overclocking and undervolting.
Set your OC and voltage settings. Then use setcpu or pimpmycpu min and max to your highest OC MHz.
Then play 1 round of Dungon Defenders. If you make it through that then open the camera.
Repeat this on every MHz from top to bottom. If you are unstable at a frequency then increase your voltage slightly (like 10 - 20 mV) and try again.
If you are stable and want to get a little bit better battery do the same thing but lower the mV until dungeon defenders crashes.
Then start to increase it until you are stable.
If your tablet reboots your way low on mV
If it freezes your low on mV
If the widgets act funny, and/ or disapear every once in awhile your in the right ball park
If everything works except your camera freezes you are very close
Some kernels have more aggressive GPU timings which you can't really change so you might want to try another's kernel if you can't get stable.

Well, it seems that I can't go higher than the 1.2 GHZ. If I go any higher, I get some weird freezes and reboots.
Now I saw the post above but I dont see where I can adjust the different voltages, etc..Maybe I am not using the right program?

acdcking12345 said:
Well, it seems that I can't go higher than the 1.2 GHZ. If I go any higher, I get some weird freezes and reboots.
Now I saw the post above but I dont see where I can adjust the different voltages, etc..Maybe I am not using the right program?
Click to expand...
Click to collapse
What program are you using? Try SetCpu or Pimpmycpu

baseballfanz said:
What program are you using? Try SetCpu or Pimpmycpu
Click to expand...
Click to collapse
SetCPU is what I loaded

acdcking12345 said:
I loaded the Blades 2 kernel on my TF along side the Revolver ROM.
How can I tell if the OC is safe and working? I am not sure if you stress test it or anything like you do on a Windows PC type device..
Click to expand...
Click to collapse
Are you referring to this kernel?
I'm wondering because I have never heard about a "Blades 2" kernel.
EDIT: Nevermind, I figured it out. This is what Revolver Parts calls Blades' 10-01-2011 kernel.

Blades uses some aggressive GPU timings in some of his kernels. You may want to try Clemsyn 22 if you want to try and go above 1.2 GHz.

how can i get the best out of my new charge?

I have installed rooted stock FP1 with voodoo lagfix and the PBJ 5/24 kernel installed... what else should i do to speed this puppy up....

I would recommend the tweaked rom.
Sent from my handheld Linux computer using electromagnetic radiation.

I recommend not making a new thread just for this.
Sent from my SCH-I510 using xda premium

What launcher is in tweaked Rom.. I love touch wiz... Which is why im asking... Also what the best overclock app to use.. is it setcpu?
Sent from my SCH-I510 using Tapatalk 2

miguel11691 said:
What launcher is in tweaked Rom.. I love touch wiz... Which is why im asking... Also what the best overclock app to use.. is it setcpu?
Sent from my SCH-I510 using Tapatalk 2
Click to expand...
Click to collapse
Wow that's a first but yeah tweaked has tw launcher ad default. Also voltage control is free and works fine for oc/uv.
Sent from my handheld Linux computer using electromagnetic radiation.

SetCPU works for OC/UV, but I find it much less intuitive than Voltage Control.

JihadSquad said:
Wow that's a first but yeah tweaked has tw launcher ad default. Also voltage control is free and works fine for oc/uv.
Sent from my handheld Linux computer using electromagnetic radiation.
Click to expand...
Click to collapse
what is a first.... and does someone have th ebest settings for VC.. i just always overlcocked... never messed with voltage

miguel11691 said:
what is a first.... and does someone have th ebest settings for VC.. i just always overlcocked... never messed with voltage
Click to expand...
Click to collapse
Someone liking TouchWiz
100MHz: -100
200MHz: -100
400MHz: -100
800MHz: -75
1000MHz: -50
Those seem to be good starting points for most people...most phone seem to be stable at that. You can continue experimentally reducing it from there. Some processors handle it better than others (mine can go lower than that pretty much across the board but some can't). The worst that happens is that it's unstable and randomly reboots...you aren't going to permanently hurt it by undervolting.
For higher frequencies, it's more down to experimentation. When you get into the overclocking ranges, it gets really individual to the processor.

wow, I thought nobody liked TouchWiz.
My setup:
-Tweaked ROM
-PBJ kernel (NOT using EXT4...it always makes my phone run very sluggishly)
-The SQL cleanup script found here: http://rootzwiki.com/topic/25072-sqlite3-phone-is-snappier-than-ever/ (I really have nothing but anecdotal evidence but I'm overly convinced that this helps)
-Autokiller memory manager app set to the "Strict" preset. imnuts's new kernel (524) makes similar changes to the values that AKM changes, but "Strict" is slightly higher (60/70/80 vice 50/60/70) and I find it to work better for my phone. The next highest setting seems to be working too much to kill things off, which also slows down the device. This seems to be the happy medium for my phone, YMMV.
-Overclocked to 1.2 using Voltage Control. This doesn't seem to effect my regular operations but I do notice a difference with more intense games (which I don't use very often). I can't go higher than 1.2 and my UV settings are more conservative than those listed in this thread.
-ADWex (the paid one) is the smoothest launcher I've used. I kept hearing this for the longest time but my experience with the trial version was the opposite. Turns out, they are totally different. Give it a shot. ADW has some neat features, too.
-Also make sure you go through and debloat as far as you can. For instance, I only use gmail but the stock email app will always run in the background and eat up RAM...so I uninstalled it. Since I don't use things like the TW launcher or the TW calculator (Realcalc is a better, free alternative), they're gone, regardless of whether it makes a difference to my experience. I'm also a FB user and the official FB app will eat RAM in the background regardless of your sync and alert settings. Friendcaster won't, so I use it (disclosure: I only have the app so I can share things like photos. For status updates and browsing I just use the mobile site in the browser). People will argue, especially when the topics of task killers comes up, that Android handles its own memory management great. It largely does, but this phone is very susceptible to bogging down when you get to the upper limits of RAM usage. That's why I believe changing the minfree values in AKM is so important, an improvement that is maximized by getting rid of superfluous RAM eating processes. Obviously, the more crap you have on your homescreen, the more resources it takes to run your homescreen. Do what you're comfortable with.
My phone is running really well for me right now. I hope you can get the same enjoyment out of yours.

Thanks a lot...
Sent from my SCH-I510 using Tapatalk 2

BleedsOrangeAndBlue took my recommendation to install sqlite but i actually use different OC/UV settings:
100mhz -200
200mhz -150
400mhz -125
800mhz -100 (i'm underclocked at 800 right now and have no issues besides games)
1000mhz -75
1200mhz -50
also I recommend tweaked2.1 because the included tweaktools script comes with a lot of good kernel tweaks like darkly zip-align and renice which speed up application use
also use an auto cache cleaner with the sqlite cleaner because that lowers lag as well

My setup: 100Mhz -200
200Mhz -100
400Mhz - 75
800Mhz -125
1000Mhz - 50
1200Mhz -50
1300Mhz -25
SetCPU: ondemand, sio, up treshold 97, sampling rate 100000
Profiles: screen off- 100 to 200Mhz at 75
In call - 100 to 1000Mhz at 80
Screen unlocked - 100 to 1300Mhz at 99
This works for me. If I put the 200 or 400Mhz any lower my music player stars skipping. Music player mostly uses the 200 n 400Mhz while video n Netflix uses 800Mhz CPU speeds. Its what I noticed. Also am on Tweeked 2.1 with PBJ 524 n this http://forum.xda-developers.com/showthread.php?t=1684997. On Antutu with this setup my score was 3171 I ran it just b4 I posted this. But my best score was 3404 but I forgot what setup I had for that. Anyway this seems to b fast n smooth so I'll stick wirh it, for a while.

p2kmafia said:
BleedsOrangeAndBlue took my recommendation to install sqlite
Click to expand...
Click to collapse
I truly appreciate it, too! It really makes my phone run much smoother and with a widget on my "Utilities" screen for it, I can get back up to speed with one push in less than a minute.
Thanks for the UV settings. I don't underclock, but I do run the conservative governor to stay on lower settings more of the time. I could probably be more aggressive with some of my lower settings, I think I'm going to play around with them now.
---------- Post added at 08:08 AM ---------- Previous post was at 08:06 AM ----------
Lehocki said:
Music player mostly uses the 200 n 400Mhz while video n Netflix uses 800Mhz CPU speeds. Its what I noticed.
Click to expand...
Click to collapse
This could vary based on your governor settings, too. For instance, if I'm using ondemand, Pandora will use my max clock speed most of the time. If I use conservative, it flickers between 200 and 400.
Just putting that out there so you can further optimize if need-be. I've become a bit of a battery fanatic recently.

" This could vary based on your governor settings, too. For instance, if I'm using ondemand, Pandora will use my max clock speed most of the time. If I use conservative, it flickers between 200 and 400."
Yes that is why I have the sampling rate at 100000. It is my stable setting , but the 80000 also works fine and 60000 I also notice some skips but not as much as with the 40000 setting

BleedsOrangeandBlue said:
wow, I thought nobody liked TouchWiz.
My setup:
-Tweaked ROM
-PBJ kernel (NOT using EXT4...it always makes my phone run very sluggishly)
...
Click to expand...
Click to collapse
It's no longer sluggish. The problem has been solved and it's noticeably faster than non EXT4. You should try it.

Ted A said:
It's no longer sluggish. The problem has been solved and it's noticeably faster than non EXT4. You should try it.
Click to expand...
Click to collapse
do you have a link to the fixed version? I did it with the TonsitPBJ ext4 converter package for tweaked 2.1 and it was awful... not to say that its anyone's fault, this is consistent with every ext4 conversion I've ever done.

I posted a method in rootzwiki http://rootzwiki[dot]com/topic/24729-recommend-conversion-to-ext4/
it is a little tedious but if the method you used did not work well I recommend this method because I had no problems during or after the conversion.