Heat issues on custom roms - X Style (Pure) Q&A, Help & Troubleshooting

So, I noticed that the phone heats up significantly more while using a custom ROM. All I've tried do it (purenexus, exodus, cm). Right now I'm running trupurexmm and it's fine, presumably because it's modified stock. Does anyone know why this happens, or can recommend a good 6.0.1 ROM that doesn't?
Thanks!

Sorry I can't make a recommendation, but I assume the reason the modified stock and stock ROMs run cooler is CM and various others most likely lack the stock thermal-engine config which controls CPU throttling and hot-plugging.

quakeaz said:
Sorry I can't make a recommendation, but I assume the reason the modified stock and stock ROMs run cooler is CM and various others most likely lack the stock thermal-engine config which controls CPU throttling and hot-plugging.
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Is there a fix for this that you know of?

I'm running CM right now and have used two other custom ROMs. All of them run hot at first, there's a lot going on after flashing a ROM and it's CPU extensive so they will get hot. After the dalvik gets rebuilt and everything settles down the temps return to normal. All the kernels have thermal throttling of some sort otherwise the phones would self destruct.

My limited experience with CM on a couple of phones is that the CPU governor doesn't work. There have been numerous fixes recently that help but it still doesn't work as well as stock overall. Stock was a bit jerky, so there are a few cases where the CM governor might feel better.

Brookspeffer said:
Is there a fix for this that you know of?
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Not that I know of.. maybe a custom kernel? Not sure if CM's kernel is configurable as far as changing CPU hot-plugging and throttling thresholds.

Brookspeffer said:
Is there a fix for this that you know of?
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Lower screen resolution to 1080p

Related

Trinity Kernel...1400mhz max?

I recently flashed the newest Trinity Kernel on my Nexus 7. I still have the stock ROM. I tried to tweak the CPU settings with ROM Toolbox and the most I can overclock is 1400mhz. Why can't I overclock to 1600? Is it because of the stock ROM? I'm looking into Glazed Jelly Bean as a custom ROM but I'm not sure I want or need to use a custom ROM at this point.
Any suggestions?
Because he dropped the Max. You probably flashed A111 correct? That's a TSVZ meaning it is slightly over clocked and undervolted kernel meant for battery not for performance.
Sent from my Nexus 7 using Xparent White Tapatalk 2
U2Bono269 said:
I recently flashed the newest Trinity Kernel on my Nexus 7. I still have the stock ROM. I tried to tweak the CPU settings with ROM Toolbox and the most I can overclock is 1400mhz. Why can't I overclock to 1600? Is it because of the stock ROM? I'm looking into Glazed Jelly Bean as a custom ROM but I'm not sure I want or need to use a custom ROM at this point.
Any suggestions?
Click to expand...
Click to collapse
try a96, its one of my faves. it has a max of 1700mhz http://goo.gl/mLUCZ
Mildly on topic question ... do you notice any imporvments with overclocking? My first experience with overclocking as on my Hero, and then Galaxy S1, but this N7 just feels so fast i cant see overclocking making it any smoother? lol
thanks
myke66 said:
Mildly on topic question ... do you notice any imporvments with overclocking? My first experience with overclocking as on my Hero, and then Galaxy S1, but this N7 just feels so fast i cant see overclocking making it any smoother? lol
thanks
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yes. its noticeable, but not like on the older devices.
simms22 said:
yes. its noticeable, but not like on the older devices.
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Click to collapse
Nice, ill have to look into rooting sometime soon.
Ok, I got the a96 and I've flashed it...
Is there a detailed changelog for each version? The a111 said it was a 1600mhz kernel so I don't understand why it was dropped down to 1400. That's where my confusion was.
I did notice some increase in speed at 1400. I was having some stuttering issues with Dead Trigger and Minecraft PE, and they were less with the 1400. I've got it running at 1600 now but I don't know what it will do to the battery or how well it will perform. I'll find out later. I've run through the battery pretty quickly today, but I was tinkering with it A LOT so it's not accurate.
What kind of tweaks could I do using Rom Toolbox that would help me maximize my battery while overclocking to 1.6?
Dont over clock.. i dont even see a need to. I use the ondemand gov which stutters a little but using interactive clears that up. Also using the CFQ IO as it is the stock IO used. Its stock so its gotta be good . Also you should turn F-Sync off that helps quite a bit. Also you could toggle auto hotplug and make it only run two cores while gaming and then turn it back on when finished so that way it will hotplug cores as it sees necessary. You could also up the voltages a little bit, some CPU's dont like the lower voltage and that will cause stuttering and glitching just up them by 25mV and see if it clears if not try another 25mV.
I will try those things, but I really want to play with overclocking and learn what happens. This is my first Android device so I'm experimenting and playing around.
But I have one more question...I've overclocked to 1.5...I found 1.6 to be the same as 1.5. But it seems that after an hour or so, it resets to 1.3. in ROMToolbox. Why is this?
Don't use rom toolbox. Use the Trinity app. It sticks just fine for me. Besides you support the dev to make better kernels.
Sent From My Toro+ via White Tapatalk
simms22 said:
try a96, its one of my faves. it has a max of 1700mhz http://goo.gl/mLUCZ
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i **** my pants a little when it says "system succesfully corrupted, please freak out now"
MRsf27 said:
i **** my pants a little when it says "system succesfully corrupted, please freak out now"
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Lol its a joke... its the updater-script you can make it say anything... :laugh:
MRsf27 said:
i **** my pants a little when it says "system succesfully corrupted, please freak out now"
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ha!
youre not the first
Overclocking past 1.4 Ghz doesn't result in any major usability improvements. I've gone up to 1.7 Ghz and the only thing it does is make my tablet really warm and unstable. All you really need for improving system performance is I/O tweaks to speed up app and page loading, and a little bit of GPU overclocking to help with the transitional effects.
and, to be honest, depending which trinity kernel im using, im using either 1100 or 1150mhz mostly. on a111 im using 1100mhz and on a96 i used 1150mhz. with those speeds everything is still fast but a bit better on battery
Overclocking
If you want a little more information about the the overclocking if you havent already you might want to check out http://forum.xda-developers.com/showthread.php?t=1788759 its the official thread of the trinity kernel for grouper.

[Q] Performance difference from different kernels on different roms

Hi,
I've noticed a huge performance difference between kernels and the roms they're used with.
For example:
I was using AOKP and Franco kernel and got around 20000 antutu points, I've switched to Carbon Rom (because of the build in pie control) and Franco kernel and only get around 13000 points, that's a huge difference.
As a test I've installed Matr1x-kenel on Carbon and get around 21000 points.
I really like Franco-kernel and all the tweaks it offers but don't like the huge drop in benchmarks, I know benchmarks are not a real representation of actual performance but it's still a big difference.
This also occurs in Quadrant and Geekbench.
So my question is why does this happen?
Aren't most roms supposed to be compatible with most kernels?
Thank you in advance.
Best regards.
I can't answer your question as to why that happens (no doubt someone else will) but you seriously should just stop bothering with benchmarks and use your own eyes and experiences as a measure of how good a kernel/ROM is. I doubt you could find a kernel which made the phone visibly slow or that affected usability so I don't see what your concern is tbh.
Thanks for your answer.
Yeah, I read that a lot on XDA, don't trust benchmarks...I understand that but they must have some meaning.
I mean, if not why do they exist or do people bother using them?
To be honest I don't really notice any real performance difference between most kernels I've tested.
Best regards
some roms include many optimizations(like skia/dalvik, krait optimizations, and others), while some dont. its not thekernel thats crapping out on you, its the rom.
---------- Post added at 07:02 PM ---------- Previous post was at 06:58 PM ----------
Nigeldg said:
I can't answer your question as to why that happens (no doubt someone else will) butcomseriously should just stop bothering with benchmarks and use your own eyes and experiences as a measure of how good a kernel/ROM is. I doubt you could find a kernel which made the phone visibly slow or that affected usability so I don't see what your concern is tbh.
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Click to collapse
your eyes can be decieved.. they can see whats happening in the ui for example, but you can not see the complex calculations that are being performed or how your cpu is really performing. you can have a slow device whos ui is quick.
OK, I can understand that not all roms are equal but why does changing the kernel have such a seamingly big impact?
If a rom is bad to begin with it should stay that way no matter what kernel you use with it.
Offcourse what do I know, I'm not a developer so my knowledge on the subject is limited.
I'm just trying to understand what's going on...
Best regards
Pihkal said:
OK, I can understand that not all roms are equal but why does changing the kernel have such a seamingly big impact?
If a rom is bad to begin with it should stay that way no matter what kernel you use with it.
Offcourse what do I know, I'm not a developer so my knowledge on the subject is limited.
I'm just trying to understand what's going on...
Best regards
Click to expand...
Click to collapse
kernels vary too, and they impact greatly because they control just about everything in the phone, kinda like a brain. since the kernels themselves vary, one kernel might be better set up than another to deal with certain code from a certain rom. and then also, every phone reacts differently to each kernel(and roms to a point). thats why its recommended to try out different kernels, combos. only then you can find the perfect combo for you/your device. what works great for somebody, can be lousy for another.
OK, so if i understand correctly it boils down to this:
1. You can do benchmarks but don't base your opinion on just the benchmark scores.
2. Roms can vary greatly in optimizations and efficiency of coding.
3. Kernels can also vary greatly in optimizations and efficiency of coding.
4. There's no such thing as a "best for everyone rom/kernel combo".
5. Not all roms/kernels play equally nice with each other.
6. Play around with as many roms / kernels as possible and decide what works best for ME based on MY experience.
Thanks for the advice.
Best regards.
Its been well over a year since I ran any benchmark of any sort but I tested Franco and carbon because that's what I'm on and you mentioned low scores. I'm on Franco m3 with some tweaked settings and carbon nightly from 7-5. Antutu gave me 20636. I'm using stock CPU and GPU frequencies.
username8611 said:
Its been well over a year since I ran any benchmark of any sort but I tested Franco and carbon because that's what I'm on and you mentioned low scores. I'm on Franco m3 with some tweaked settings and carbon nightly from 7-5. Antutu gave me 20636. I'm using stock CPU and GPU frequencies.
Click to expand...
Click to collapse
Maybe the nightly Carbon rom is more optimized?
I'm on Carbon 1.7 Stable and used Franco nightly 162 to test with.
When I benchmark I try to be as consistent as possible ie same temperature, performance governor, airplane mode etc.
I even cooled my Nexus in the freezer for some minutes to eliminate thermal throttling (yeah I know, watchout for condensation) but still got the same low scores.
Best regards.
Pihkal said:
Maybe the nightly Carbon rom is more optimized?
I'm on Carbon 1.7 Stable and used Franco nightly 162 to test with.
When I benchmark I try to be as consistent as possible ie same temperature, performance governor, airplane mode etc.
I even cooled my Nexus in the freezer for some minutes to eliminate thermal throttling (yeah I know, watchout for condensation) but still got the same low scores.
Best regards.
Click to expand...
Click to collapse
It might be, I didn't do anything special. I left all my background apps running, didnt close anything in the recents, didn't cool the phone first. I just downloaded it and hit start. I use the interactive governor tweaked a bit, and I also tweaked the hotplug settings so it more readily onlines all 4 cores instead of waiting for some of the higher loads to trigger it.
username8611 said:
It might be, I didn't do anything special. I left all my background apps running, didnt close anything in the recents, didn't cool the phone first. I just downloaded it and hit start. I use the interactive governor tweaked a bit, and I also tweaked the hotplug settings so it more readily onlines all 4 cores instead of waiting for some of the higher loads to trigger it.
Click to expand...
Click to collapse
Well, I had to try it myself so I did a factory reset, cleared system,data and dalvik, installed latest carbon nightly.
With stock kernel I almost reached 21000 points, with franco I barely get 17000 points.
Very strange...
edit:
I stand corrected, did a second benchmark and am now getting 20880 points...
are you benchmarking with your cpu speed benchmarked set as highest and lowest cpu speed? you should. if you dont put the same cpu speed as highest and lowest then itll scale up and down. if it scales, you dont actually know what speed its testing and it gives you inconsistamt scores. you want the cpu speed to be the same throughout the test.
When I benchmark I set the governor to performance, this should keep the cpu running at maximum speed without scaling unless I'm mistaking...
Pihkal said:
When I benchmark I set the governor to performance, this should keep the cpu running at maximum speed without scaling unless I'm mistaking...
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Click to collapse
meh, performance is the worst for benchmarking. its such a deceiving name. try either ondemand or interactive. set your cpu speed to be the same high and low.
simms22 said:
meh, performance is the worst for benchmarking. its such a deceiving name. try either ondemand or interactive. set your cpu speed to be the same high and low.
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Click to collapse
Woow, that's a great tip, I now get 22003 points with Matr1x-kernel.
Pihkal said:
Woow, that's a great tip, I now get 22003 points with Matr1x-kernel.
Click to expand...
Click to collapse
better :highfive:

What's Your Reason for Not Using the Stock Kernel...

I see a lot of people are quick to flash AK, Franco, Tyr, etc before they even give the kernel that comes with the ROM a try.
From my personal experience, the kernel that comes with a ROM is always faster & snappier than aftermarket kernels (no overclocking).
Also, correct me if I'm wrong, but the kernel that comes with the ROM is optimized to perform best with the ROM. Optimization is the main reason why Android is one step behind of iPhones. I don't know about you guys, but I want my phone to be fully optimized which is why I stick with the stock kernel most of the time.
I guess I'm also one of these people who are quick to flash a aftermarket kernel.
But I think the aftermarket ones are the more optimized ones.
Anyway I never had problems with the stock kernels.
I love the extra work devs like Franco and AK do. Sometimes I get some reboots with Franco but overall its a good experience. I just have some Franco loyalty from when I used his kernel on nexus 4 lol best kernel ive ever used. Not sure if I'd say the same about his one plus kernel but if there's any issues I'd blame cm not him
Klobal said:
I guess I'm also one of these people who are quick to flash a aftermarket kernel.
But I think the aftermarket ones are the more optimized ones.
Anyway I never had problems with the stock kernels.
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I used to be the same way on my older android devices.
It seems like now flashing a kernel is no longer need to improve performance (sorta)
The hardware on the oneplus one is beast & android has come a long way in terms of software.
Because I love the sound control in AK Kernel
jousa11 said:
Because I love the sound control in AK Kernel
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Better than Viper or DSP?
OmegaBlaze said:
Better than Viper or DSP?
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I use viper as the audio processor AK's kernel just gives good audio gain without any distortion
OmegaBlaze said:
I used to be the same way on my older android devices.
It seems like now flashing a kernel is no longer need to improve performance (sorta)
The hardware on the oneplus one is beast & android has come a long way in terms of software.
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Click to collapse
I believe the same. I get most battery savings from deleting bloat off the phone.
NJGSII said:
I believe the same. I get most battery savings from deleting bloat off the phone.
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Click to collapse
I do the exact same thing. I try and delete all of the unnecessary google play stuff as well as apps I don't use often. And use greenify as well.
jousa11 said:
I use viper as the audio processor AK's kernel just gives good audio gain without any distortion
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Click to collapse
I definitely have to try that out. I usually always skip pass it lol..
I use franco kernel because I get better battery with his kernel (compared to stock), and it's always up-to-date with most of the patches, while with stock you'll have to wait until the next OTA to get some patches.
NJGSII said:
I believe the same. I get most battery savings from deleting bloat off the phone.
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Click to collapse
Can you please name bloat stuff which still comes with Cyanogenmod what should be deleted? Would be helpful for me to get my phone as clean as possible/neccessary.
m4soN said:
Can you please name bloat stuff which still comes with Cyanogenmod what should be deleted? Would be helpful for me to get my phone as clean as possible/neccessary.
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Click to collapse
Meant that with other phones I have
So, there is no stuff which still comes with systems like cyanogenmod which i can delete without getting any trouble? If yes, how do i know which stuff this can be?
Purchased Franco Kernel Updater and if I didn't use a custom kernel (or Franco Kernel) then I spent money on something I'm no longer using.
Also because I'm not a fan of mpdecision.
zephiK said:
Purchased Franco Kernel Updater and if I didn't use a custom kernel (or Franco Kernel) then I spent money on something I'm no longer using.
Also because I'm not a fan of mpdecision.
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Click to collapse
Same here switching between AK and Franco.
Both are a good choice.
But as mentioned before, the hardware of our phone is :good: so no need to flash a aftermarket kernel to gain more performance.
zephiK said:
Purchased Franco Kernel Updater and if I didn't use a custom kernel (or Franco Kernel) then I spent money on something I'm no longer using.
Also because I'm not a fan of mpdecision.
Click to expand...
Click to collapse
Why not? Intelliplug?
OmegaBlaze said:
Why not? Intelliplug?
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Click to collapse
Anything other than mpdecision, I personally prefer Franco's hotplug algorithm which is his own implementation of powering on/off cores.
Mpdecision is Qualcomm's implementation of powering on/off cores.
I personally am not a fan of Intelliplug,
3 - Don't even bring intelliplug on this. With all due respect to faux, that driver is a butchered solution to control the cores. The code is a mess and, in my opinion, just doesn't make any sense. I've worked on my Hotplug driver for years and it works as simple as need be, with appropriate userspace tunables for users to tinker with.
http://forum.xda-developers.com/showpost.php?p=55667033&postcount=3981
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Click to collapse
http://www.reddit.com/r/nexus4/related/158t1i/custom_kernels_a_guide_on_what_you_need_to_know/ has a great reading on mpdecision and why it is not good in their opinion.
--mpdecision--
All Qualcomm based phones have Qualcomm prorprietary userspace binary called "mpdecision" aka m(ake)p(oor)decision. Instead of letting the kernel itself to decide what frequencies and how many cores to run, this "mpdecsion" binary polls the kernel run queue statistics and decides for the whole system the "optimal" frequency and the "optimal" number of cores to use. The concept is fine, except the decision making is done in userspace and it's 100% closed source so there's no way to tweak it and there's a latency (because all userspace binaries needs to "poll" the kernel for the latest information which is slightly delayed). - faux123
ELI5: mpdecision is a proprietary Qualcomm daemon that makes calls to the SoC (the entire chip your phone uses) to manage the cores. The OS (PowerHAL) makes a request to mpdecision and then mpdecision makes a request to the first two cores to ramp them up. - _motley
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I like to mess with my phone. Simply because I need a kernel fully optimised kernel for the device. Not to say that the developers aren't doing a good job, but in my case, a user sometimes knows better than the creator themselves.
Unless the custom kernels do not satisfy me, I'll revert back to stock.
m4soN said:
So, there is no stuff which still comes with systems like cyanogenmod which i can delete without getting any trouble? If yes, how do i know which stuff this can be?
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Click to collapse
This phone is fairly clean out of the box. About the only stuff worth freezing or deleting would be some of the google play apps if you don't use them. For example Google play books, news stand, or games.

[Q] Kernels for Lollipop?

Are there currently any kernels that would work nicely with 5.0? I want to overclock a bit but don't think theres any kernels yet, just asking here as assurance I'm right or to be proved wrong.
S1L3nTShaDoWz said:
Are there currently any kernels that would work nicely with 5.0? I want to overclock a bit but don't think theres any kernels yet, just asking here as assurance I'm right or to be proved wrong.
Click to expand...
Click to collapse
Youre able to use any kernels such as funky, faux, etc. Basically any that dont come with their own ramdisk. Personally i use snuzzos funky kernel that if you care about benchmarks puts the grouper right on top with this years' flagship devices on antutu without any overclocking. Though if thats a need faux is stable enough with lolipop to overclock nicely
Edit: if you were to go with funky you should try out the CPU governor 'lulzactive' as that's by far better than any other I've tried, on my hardware at least.
abrahammmmmmm_ said:
Youre able to use any kernels such as funky, faux, etc. Basically any that dont come with their own ramdisk. Personally i use snuzzos funky kernel that if you care about benchmarks puts the grouper right on top with this years' flagship devices on antutu without any overclocking. Though if thats a need faux is stable enough with lolipop to overclock nicely
Edit: if you were to go with funky you should try out the CPU governor 'lulzactive' as that's by far better than any other I've tried, on my hardware at least.
Click to expand...
Click to collapse
Will do, I'm looking for something to make my N7 go from a car engine to a hyperdrive! & yes I love getting high benchmarks, sorta tricks me into believing my device is faster than it is lol. Might make me be totally oblivious to any lag haha xD. Anyways I'll give funky a shot with the lulzactive gov as I've already tried Faux before.

Is GRAM is enabled on custom roms?

So...before someone jumps me for opening up a thread about this when there are others already, know that i only did this because in EVERY thread about this, there is no clear answer. Is GRAM only hardware related (meaning that it would be enabled on CM roms and other custom roms) or is it only enabled on LG stock roms?
Can any dev clarify this please?
migueldbr said:
So...before someone jumps me for opening up a thread about this when there are others already, know that i only did this because in EVERY thread about this, there is no clear answer. Is GRAM only hardware related (meaning that it would be enabled on CM roms and other custom roms) or is it only enabled on LG stock roms?
Can any dev clarify this please?
Click to expand...
Click to collapse
I think it is depending on the kernel, since on some ROMs no matter what I'm doing the min GPU frequency is +-200mhz, but on the one I currently run (5.1.1) the idle frequency is around 27mhz, which shows the effect of the GRAM, if I'm not mistaken.
shaneel1491 said:
I think it is depending on the kernel, since on some ROMs no matter what I'm doing the min GPU frequency is +-200mhz, but on the one I currently run (5.1.1) the idle frequency is around 27mhz, which shows the effect of the GRAM, if I'm not mistaken.
Click to expand...
Click to collapse
I don't think that's gram. That's just an implementation of custom kernels for a lower idle frequency? Gram is different, it does not refresh certain parts of the screen that are static(or something like that)
migueldbr said:
I don't think that's gram. That's just an implementation of custom kernels for a lower idle frequency? Gram is different, it does not refresh certain parts of the screen that are static(or something like that)
Click to expand...
Click to collapse
True, but I have insane battery life when the screen is just idling and displaying just a whatsapp chat or image or something like that.. I just wish there was an easy way of implementing LG features into CM based ROMs..

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