yashsingh1/xdaforums huggingface dataset:
[Xperia Z2 General] Pesetio:
:) Yeah, I understand it's logical and I was referring to the drastic impact it seemed to have for me. I haven't really noticed anyone confirming that 4K video is better on .402 since it should be because 4K is underclock from 1ghz to 800mhz.
[Xperia Z2 General] Mr.R™:
Would be good to test the temperature differences really, see how far it is below the threshold once undervolted, I'm - 36 on all steps so I may test later busy with kids atm tho
[Xperia Z2 General] Rilavalon:
It seems to be a good point. Does the bitrate remain the same when you are undervolting & underclocking your XZ2 ?

I don't know if the cpu is used for 4K encoding or if it's a special processing unit.

We can't lock the cpu frequencies without root ...

Sony should lock cpu power when the camera application is used because 1080p @60fps and numerous shot at 20.7mpix turn it into oven.:crying:
[Xperia Z2 General] pepeo123:
yeah it makes complete sense. the chipset will be using less voltage and current, wich means less power. less power = less heat

in my desktop core i7 4770k for example, if i undervolt 120mv from the original voltage, i can get like 13C diference in temperatures
[Xperia Z2 General] Mano1982:
Which app do you use to undervolt your phone? :)
[Xperia Z2 General] Pesetio:
The CPU basically has 100% usage on all 4 cores when it's recording in 4K, I'm not sure about the GPU but when I have underclocked the GPU to 200MHz, after 4K video recording it defaults back to the 575Mhz.

You need to have doomkernel 6 or above installed. If you have Romaur, it comes with a default app (Performance Control). You can use Fauxclock, SetCPU etc..
[Xperia Z2 General] One Twelve:
have you done any stress testing ?

How is the stability. This will take time to assess.
[Xperia Z2 General] Pesetio:
Not really however it was getting a stress test @ 800Mhz frequency, since 4K recording stresses the CPU and that is for over 30mins and I have had now slowdowns, glitches or reboots since my undervolts.
[Xperia Z2 General] One Twelve:
Do you recall the surrounding ambient temperature under which you got this performance ?
[Xperia Z2 General] Pesetio:
11c

However I did another test that was done at 16c where I got 36mins, checked the CPU temperature, max 44c, current 42c then I went straight into 4K again and to my surprise I got 30mins.

44c must be the cutoff temperature, what was surprising is that from 42c to 44c took my phone half an hour of 4K recording to reach.

Seems like I could keep doing 30+ mins of 4K endlessly. Obvious battery goes down hard, 66mins of 4K was 45% battery drain.

It's winter here in Melbourne now so obviously that plays an important factor. I'll have to edit original post to include these factors so it doesn't mislead people.
[Xperia Z2 General] pvyParts:
* note

every CPU is slightly different some can handle more undervolt than others ( much like an overclock ) :) so YMMV with how far you can push the UV.

and hiyo from the west coast (perth) [MENTION=5512893]One Twelve[/MENTION]

pvy.
[Xperia Z2 General] One Twelve:
oh no, i was so hoping it was warmer when you did that test.

11c or 16 c is 20 degrees lower than where i am.

What this means is the Z2 will at least be able to match the rest unlike presently when it comes to heating.

Stabilisation causes faster heating because its resource intensive. Z2 matched the lumia 920 which is some feat but it won't be able to record for as long unless ambient temperatures are 10-20 degrees. At those temps camera works longer by a significant margin over stock. Even at elevated ambient temperatures I expect there will still be an improvement. P =V^2/R and all.

The next question i have is by how much is cpu performance affected say in benchmarks as a result of under volting ?

yes, would make things more clear.
[Xperia Z2 General] Pesetio:
I was curious so I did another test, I enabled and disabled and didn't really notice any difference in CPU usage however when I did the test I noticed that the CPU cores are clocked @ 1.2ghz now but uses less CPU. Higher clock with less CPU usage seems to be better then lower clock with more CPU usage.

I have been on Romaur 3.0 which is also .402 and it was locked @866mhz and all the CPU cores were at 98 - 100 usage. Very strange indeed.

I have noticed some strange things though from prevous versions, such as being able to under or overclock each individual CPU core and have the settings always stick which I could not do before. Maybe it's because I updated to Doomkernel 9 but I'm not sure.

Have you got the system monitor app with the floating notifcation? I'd like to know what your 4K video is running @ and what kind of CPU usage u get.

I'm on Romaur 3.1 and Doomkernel 9
[Xperia Z2 General] One Twelve:
Pesetio, i don't have a Z2 yet. But am watching developments on it. Your work here is very promising :victory:
[Xperia Z2 General] Pesetio:
Ahh ok I thought you had one lol :)

You'll enjoy it when you do though

For others who do have the phone it would be interesting to know the CPU frequency that you 4K records in and what the CPU usages are, might be able to pinpoint the problems with 4K recording.

The only program I know of that has floating notification is System Monitor (paid version), I'm sure there is a free program that does this though I'm not sure myself.
[Xperia Z2 General] progressfx:
had that issue.i have underclocked my CPU to 1.7 per core. after that i filmed 15 minute file, rec was stopped beacause my sd is full.
[Xperia Z2 General] One Twelve:
Initial

impression

:cowboy:
[Xperia Z2 General] Pesetio:
Good to see that it worked for you, I think undervolting plays a part but the CPU usage when recording 4K plays a major part, if you get very high CPU usage your phone will heat up very quickly and you won't get long recordings, however if you get low CPU usage (even @ high frequencies) you will get very long video recordings and phone will not be too hot.

I saw your post, it's actually better to record to the internal storage because it's apparently faster, however all of my tests were conducted onto the externalSD.

I did some more tests, this time I turned on my heater to try to recreate a hot climate lol.

I had the phone running @ 1.6ghz with the floating CPU notification on top and heater blowing hot air (1 notch down from max) from about a meter away. The CPU usage was quite low, so I immediately new that the recording would go on for at least 30mins which is did. Phone didn't feel any hotter then usual. And like usual I could go on and record 4K again straight after for 30+mins.

I'm confident to say that it is the CPU usage that is the main culprit. High CPU usage @ lower frequency will not get a long recording compared to low CPU usage @ higher frequency.

Just check the CPU usage when recording 4K and you will know right away if you are going to get good or bad results.

I know there is a mod that increases the heat threshold but personally I wouldn't use it since the threshold is there for a reason.
[Xperia Z2 General] deepflash:
in conclusion, what is the best settings u found out to get best results?
[Xperia Z2 General] Pesetio:
For me, I run my phone on a performance governor @ 1192 (1.2ghz), so the 4K video locked at that frequency and doesn't use much CPU usage.

Try it for yourself and use a floating CPU notification to monitor the CPU usage.

Gonna do more test however @ a lower frequency to see if I can confirm my suspicions about CPU usage.
[Xperia Z2 General] kabauterman:
on my locked .402 the maximum Frequency is 883 MHz and sometimes goes down to 653 on one or two cores, CPU is never stressed over 50%.

But remember it is not the pure CPU-Performance what makes the phone hot, there is a hardware encoder wich is part of the CPU wich makes it possible to record 4K.
[Xperia Z2 General] Pesetio:
How long can you record for?

When I tested 4K a few weeks ago, I noticed that the CPU usage was 90-100% and locked at 883 @ all cores but now that I get less CPU usage, the phone can record much longer. I also can't explain why it doesn't use much CPU usage now compared to before.
[Xperia Z2 General] raducanmihai:
On mine (.402 TW, stock, non rooted) with steady shot on, in 4K the load goes up between 60-90% on 3 cores an 1 core is at 30-40%, clock speed at 800.

If I turn steady shot off, load goes down to 50-60% on 3 cores and under 30% in the last one (actually this is the first core as shown by the app) with clock speed goind down sometimes in one or two cores to 300, 400, 600 (or even off in one core).

Reading the last posts (higher clock vs load) I'm confused. Do you say that the way it was on .69 was better? I mean keeping it at 1 Ghz is better than 833 Mhz (because the load is lower on 1 Ghz)?
[Xperia Z2 General] One Twelve:
Yes, that is what i understood too by the below..
[Xperia Z2 General] Pesetio:
What I meant was kinda like if the CPU load is low @ 1.2ghz, then it is better then 883mhz @ full CPU load, that was the conclusion I came up with according to my initial tests. When I was on .69 and looked at the CPU usage it was locked at 1.0ghz and using 90-100 CPU at all times and 883mhz on .402 and same CPU usage.

I was forced to format my phone yesterday since the update from Romaur 3.1 to 3.2 caused continuous force closes for me.

Anyway, I tried 4K recording after a clean install of Romaur 3.2 with Doomkernel 9.

I got similar CPU usages to kabauterman (little CPU usage) and got 30+mins of continously 4K recording. My phone was not undervolted, was still using stock volts. This would mean that undervolting helps very little if at all.

That is why I'm curious to know what 4K recording times other people got who get very little CPU usage while recording 4K. If they are getting very good 4K times then it would probably mean the CPU usage would be the big factor, if they don't then there must be some other factor that I am unaware of. Possibly the hardware encoder that kabauterman is talking about?
[Xperia Z2 General] kabauterman:
Yes, steady-shot seems to stress the CPU more, 1. Core 30% load all others up to 80%

I think sony knows wich clockstep and wich voltage is the most efficient to use while recording 4K, but I don't really understand why the phones heats up so much during 4k recording, 4 Core Load on 2.3 GHz should be a problem but not on 883 MHz.

But now we know sony can improve it a lot by tweaking the kernel.
[Xperia Z2 General] kabauterman:
For now I have tested this settings to be stable on my device:

300 MHz - 700 mV

422 MHz - 700 mV

652 MHz - 700 mV

729 MHz - 700 mV

883 MHz - 725 mV

960 MHz - 750 mV

1036 MHz - 750 mV

1190 MHz - 750 mV

1267 MHz - 775 mV

1497 MHz - 775 mV

1574 MHz - 800 mV

1728 MHz - 850 mV

1958 MHz - 925 mV

2265 MHz - 925 mV

2457 MHz - 925 mV

I also checked what clockstep the timeshift video uses and it uses fixed 1,3 GHz wich means it will run even hotter, so the voltage of 1267 MHz will be also interesting.
[Xperia Z2 General] chesterr:
But the thing is after you unlock your BL camera quality is sh*t. :(
[Xperia Z2 General] feis:
Stop spreading false information please:)
[Xperia Z2 General] chesterr:
Do you need proof?
[Xperia Z2 General] feis:
If you want to start this, sure go ahead, i will listen to your opinion. But i dont notice any difference in quality, and so does other thousands of users who unlocked.
[Xperia Z2 General] raber111:
Its really doesn't matter locked or unlocked boot loader for camera quality

Отправлено с моего D6503 через Tapatalk
[Xperia Z2 General] chesterr:
Well it's better I shut up then, cause I saw lots of noise after I unlocked the BL. Good thing I backed up TA partition.
[Xperia Z2 General] CosTuMe:
with what application did you undervolt the cpu?
[Xperia Z2 General] triggaz:
For locked bootloaders with root please try Trickster mod and use Throttling option. With that I managed to record 10 minutes of 4k video (6-8min before) and after around 15sec I could record FHD (till I stopped myself)
[Xperia Z2 General] D F:
If I want to control CPU frequency, do I need anything else but root? UB also?

And what happens if I lower it too much?
[Xperia Z2 General] chesterr:
http://xdaforums.com/xperia-z2/gene...-bl-camera-t2902268/post55962424#post55962424

I'm just laughing at people who said I was spreading false information, take a look at this thread.
[Xperia Z2 General] fccr1990:
Any random reboots??

:)
[Xperia Z2 General] Haldi4803:
Using Ultimate Pure XZ2 v1.1 based on 413 ROM I get about 1 minute 4k recording and no throttling ^^

*Screenshots of camera are 1.8mb png files and not 180kbyt like normal ones -.- can't upload them direct will edit later*

Edit:

Start:

30Sec:

1 Minute:
[Xperia Z2 General] Envious_Data:
http://xdaforums.com/showpost.php?p=56126649&postcount=22

Camera quality is not effected at all by your bootloader status

Tested and proven, the same goes for 4k, quality is the same weather LB or UB

4K recording time is only increased by a few seconds when you undervolt, atleast from my experiance, this may varie per device due to AVS
[Xperia Z2 General] xperia-xtreme:
Helppp

Hi,

I own an Xperia Z2 and I am a college student. I would like to record my lectures but whilst recording 4K video the ‘camera’ overheats after 4-7 min of use. I have tried recording in full HD, but after 30-40 min the ‘camera’ would once again overheat (I put my phone on flight mode and power saver to get the recordings this long). My lectures are between 1hr-2hr long so I am looking for a way to prolong the overheating pop up for at least 2 hrs.

As far as I have understood in your posts undervolting should reduce the heating as the less power is used. However, I haven’t rooted my Xperia yet and haven’t installed any kernels either. I have noticed that you link the heating pop-up problem occurring with the overheating of the processor. I have done tests (around 4 times whilst recording 4k) and it seems that once the CPU temp reaches around 72 Celsius the camera shuts down.

1.	Wouldn’t it be better than if I installed a ROM which contains nothing (bare minimum apps) and ran the camera application on it? (CPU wouldn’t have to use resources for background applications so less heat is produced)

2.	If you installed a custom mod for the camera app such as http://xdaforums.com/xperia-z1/development/4k-ultra-hd-increase-bitrate-to-80-mbps-t2845265 could this potentially if the bitrate was put down, increase the time able to record? (The CPU would be less stressed out as less information to process)

3.	Also which kernel for undervolting do you recommend? (Sorry if you mentioned it before but I don’t quite understand the kernels)

4.	Which kind of boot loader did you use for undervolting? (Once again I apologize if this has been mentioned somewhere before but I am not good with technical terms)

These are my phone specs:

3 GB RAM

16 Internal memory

128 GB micro SD card

Processor info: Qualcomm MSM8974PRO-AB

Android version: 4.4.2

Kernel Version: 3.4.0-perf-g35f9635

Build number: 17.1.A.0.314
[Xperia Z2 General] Envious_Data:
Sony is suposedly working on fixing the camera issues, we will have to see if thats true in 4.4.4 update

You can try undervolting

Your best bet is a non-stock based rom but that requires a unlocked bootloader

I dont recomend this unless you know more
[Xperia Z2 General] knoxploration:
Make sure screen brightness is turned down to the minimum. (Turn Auto brightness control off.) The screen backlight puts out a fair bit of heat.
[Xperia Z2 General] xperia-xtreme:
Yeah I already did that, sorry I wasn't precise on that. I also switched auto rotate off and switched GPS off as well as closed any other background applications.
[Xperia Z2 General] knoxploration:
That's fine, just figured I should suggest in case you hadn't thought of it.
[Galaxy Y GT-S5360 and Duos 6102 Q&A, Help & Troubl] galaxyYtester:
When will we have the first version of cm11 that boots?
[Galaxy Y GT-S5360 and Duos 6102 Q&A, Help & Troubl] lionelsuyog:
NO ETA!

We already have bootable version of CM11! & Remember, no ETA!
[Galaxy Y GT-S5360 and Duos 6102 Q&A, Help & Troubl] galaxyYtester:
Really? Is it like a version you can boot and swipe through the home screens? :confused:
[Galaxy Y GT-S5360 and Duos 6102 Q&A, Help & Troubl] VECTUS:
We don't do ETA's here at XDA. If one of the versions of cm11 isn't to your liking maybe try building it yourself and sharing? Closed before this gets out of hand...
[Android Apps and Games] glensantacruz:
Description

Receive email from within any app, without pausing the app, including fullscreen apps.

This is an extension for the app Floatifications published by Rob J. The floatifications app *must* be installed prior to installing FloatMail:

https://play.google.com/store/apps/details?id=robj.floating.notifications

The app supports:

Display sender name and subject

Display full email body

Commands:

Open: Opens the email app inbox

Delete: Deletes the Floatification

Reply: Reply from within the email app

Quick Reply: Reply from within the Floatification

Delete All: Deletes all recent FloatMail Floatifications

Delete Message: Deletes the email message from the remote server

Mark as Read: Marks the message as read on the remote server

The app works with nearly all email accounts by supporting the following protocols: IMAP, IMAP-IDLE (Push Mail), POP3 & Exchange via EWS or IMAP.

Note: There is no dependencies on K9, Gmail APIs or anything else so your free to use any email app that you want in conjunction with FloatMail.

Using this extension means you can do away with the status bar if you wish, disable your normal email notifications, and still be notified within FN for Email.

Questions & Improvements please contact: 'support' [at] 'maxlabmobile.com'

https://play.google.com/store/apps/details?id=com.maxlabmobile.floatmail

Screenshot

Video

This video illustrates the concept of Floatifications in a similar app for SMS:

https://www.youtube.com/watch?feature=player_embedded&v=YOGQx5jUWSo
[Android Apps and Games] Dovidhalevi:
Very promising.

Since most of us will have either the default mailer, gmail, K9 or some other popular mailer up, the ability to import accounts setting would be very highly appreciated. Kind of a pain to enter this stuff once more from the phone's keyboards, even the best of them :)
[Android Apps and Games] glensantacruz:
Thanks Dovid. I have already implemented export/import with an encrypted export file. When you tap on the export-file it will automatically associate the file with FloatMail and populate the settings. I'll expose that functionality soon in version 1.4 or 1.5. Thanks for the suggestion. Cheers, Glen.
[Android Apps and Games] Dovidhalevi:
Quite nice. Will try the 1.4 or 1.5 app once posted ( and I have decided whether or not to keep the 4.4.3 Omnrom).

I take it one still needs the original emailers around to issue the notification? Or once, imported, can they be removed if this be one's preferred mailer? Read the Play description so seems this can work on its own. Actually I only use K9 so would probably keep it around.

Exchange support puts this over the rest!
[Android Apps and Games] glensantacruz:
Sorry I should have been clearer before. The export/import feature will backup/restore the FloatMail settings which is ideal when:

1. You want to reset the device

2. You want the same settings, but on another device

But it won't automatically configure the app based on your K9/Gmail settings.

The app connects directly to your IMAP server. In the case of Gmail, it would connect to the server using IMAP-IDLE/Push-mail. When a message is sent, it will automatically appear in a floatification within a few seconds.

It is capable of opening the inbox or compose screen of any email app that you want. [You just need to choose the app from a list on the account setup screen] However, since it shows the full message and you can do quick replies hopefully users will not need to open their email apps so often.

Cheers,

Glen
[Android Apps and Games] crazyfool_1:
Awesome work mate, always nice to see a new extension like this :)
[Android Apps and Games] stavrinho:
It's a nice idea but i have a problem.

I can see in the log that it finds the new mail i just recived but it doesn't tell me.

I just sent the log via email to support@maxia...

If you need anything more just tell me.

Thanks.
[Android Apps and Games] glensantacruz:
Thanks Guys

stavrinho: Sorry, I can't find your email. It is maxlabmobile.com ['L' after 'max']. I'm sure we can solve that issue. Cheers.
[Android Apps and Games] jaladhjin:
is there a reason this can't use existing mail accounts ?

Gmail is already setup on my phone.. through official Gmail app..

Just need.. essentially floating Gmail notifications ;)
[Android Apps and Games] glensantacruz:
Yes because it was written to work with any email not only GMail. But I understand your concerns.
[Android Apps and Games] Dovidhalevi:
Hmmmm

This is work with any email account (so is set up by itself)? Have not seen this yet, maybe work a look.

EDIT:

I see I had commented on this is the distant past. For some reason, I had not gotten extensions really working.

So trying to set it up: Need to support two-stage auth. Typing in those Google "app-specific" passwords is impossible.
[Sony Xperia Miro, Tipo (Dual), J, E] m1randa:
Hey there , i have sony xperia E C1505 Single , and i want to theme it with xposed framework , but every time i apply one theme , only the battery icon changes , and sometimes , nothing change , what´s the problem ?

Stock ROM , with root acess
[Sony Xperia Miro, Tipo (Dual), J, E] StaticBlaze:
Which ROM? Odexed or Deodexed?
[Sony Xperia Miro, Tipo (Dual), J, E] m1randa:
Not a ROM , it is in stock 4.1.1 (11.3.A.2.23)
[Sony Xperia Miro, Tipo (Dual), J, E] StaticBlaze:
I know it's stock.

I'm asking you weather that stock ROM is odexed or deodexed one..
[Sony Xperia Miro, Tipo (Dual), J, E] NSDCars5:
Deodexed/odexed doesn't matter - stock isn't fully compatible with XThemeEngine.

If you want an AOSP-like look, use GravityBox.
[Sony Xperia Miro, Tipo (Dual), J, E] 2000hardwell:
Yes this only works on AOSP ROM
[Sony Xperia Miro, Tipo (Dual), J, E] m1randa:
How can i do it ? Its necessary to unlock bootloader ?
[Sony Xperia Miro, Tipo (Dual), J, E] m1randa:
Can anybody do a tutorial for me ? How can i make this work perfect ?
[Sony Xperia Miro, Tipo (Dual), J, E] NSDCars5:
I am not sure if it'll work [in fact, it probably won't], but try using this Xposed module called GravityBox and enabling statusbar icon mods - then try XTheme.

If that doesn't work, you'll need to unlock your bootloader and flash CyanogenMod for the stuff.
[Sony Xperia Miro, Tipo (Dual), J, E] 2000hardwell:
Yes you needs a AOSP rom like paranoid or cm because your rom its modified by sony and the Xtheme not works on roms like this
[One (M8) General] smaberg:
The solution is very simple and ive tested it on more then 5 different senarios when i get the bug.

1. install TWRP recovery (you can even sideload it with fastboot if you dont wanna install it on phone(if you got stock recovery etc.), with this command "fastboot boot openrecovery-twrp-2.7.1.0-m8.img"

2. make a full wipe, check all boxes except external SD :highfive:, that will erase /data/media and also /data where the encryption bug lies.

3. install your ROM or restore your ROM from backup.

4. then reboot recovery and flash the recovery you want (or sideload it with the command above).

5. done, now the encryption bug is gone :good:

if this still dont work, try the solution given by maxrdlf95 in his thread here http://xdaforums.com/showthread.php?t=2773203
[One (M8) General] mikeyinid:
So, what youre basically saying is wipe data? I think the point is most people dont wanna do that, and doesnt the other fix allow you to fix the issue without wiping? Just trying to understand...
[One (M8) General] smaberg:
Make a full backup of your ROM first, then my steps (cwm, philz won't work).

Then Restore backup...

Philz and cwm won't wipe the important parts, so with them the bug will still be there. So twrp with all options check will do the trick.