yashsingh1/xdaforums huggingface dataset:
[LG Optimus 4X HD] csk1jw:
The recent updates in CM-12.1 kernel did not take my commits for ZRAM & ZSMALLOC. Instead, an updated version of ZRAM, ZCACHE & ZSMALLOC were ported from upstream kernel-3.10 branch. The folder placement was also changed to match kernel-3.10 for the updated modules. The config file has ZCACHE enabled out-of-the-box but not ZRAM, and swapping is not enabled. I am not sure if ZCACHE will bring any benefits if swapping is not enabled. ZCACHE is meant for reducing paging activities to disk I/O, so for swapping to ZRAM, I think ZCACHE is redundant.

I have not tested this new CM-12.1 kernel yet, so I can't really comment if it works out to be similar to what I have now. If you want to make a ROM release with the new kernel, then I would recommend to have ZCACHE disabled and SWAP enabled. You already have my patch to init scripts for enabling swapping to ZRAM.

In addition, I also found that "noop" I/O scheduler works out much better than CM kernel default selection, which is "bfq". LG stocked JB ROM is also using "noop". Moto G uses a modified version of "noop". It seems that the extra intelligence in "bfq" does not pay off. I did a further code analysis on "bfq" object code and I can conclude the "bfq" is compute-intensive with lots of divide operations. Unlike Krait/Cortex-A7/A15 or more recent ARM cores, our Cortex-A9 CPU core does not have hardware support for division. I have switched to "noop" I/O scheduler in the CM-12.1 kernel I used.
[LG Optimus 4X HD] streambinder:
Thank you, mate. ;)

I no more have the ability to test anything for this device: the only thing I can do at the moment is to mantain this ROM (along - eventually - with AOSP KK). This means that if something useful to make it rockly stable could be applied, I would do it.

Obviously, I'll apply your deepsleep-related patch and the adapted one from [MENTION=1149134]Demetris[/MENTION]; I will do the same if you manage to optimize scheduler configurations, so to get a better P880-aligned ROM.
[LG Optimus 4X HD] Demetris:
Last time i checked Synthetic benchmarks on BFQ are fine if not better than any other I/O scheduler.

And i recommend you re-check my commits because Zram is definitely enabled :)

Zcache was not ready on our kernel version but is quite ready on 3.10
[LG Optimus 4X HD] csk1jw:
Yes, ZRAM is enabled, but CONFIG_SWAP is not. Without CONFIG_SWAP, we won't have swap to ZRAM. I did see ZCACHE is enabled in the defconfig file, was this a mistake in your recent commits?
[LG Optimus 4X HD] Demetris:
Omg! you are absolutely right my friend, apologies.Somehow it slipped under my radar.

No errors on zcache it stays until proven no op.

Edit:Swap is enabled

Thanks for noticing and reporting it.
[LG Optimus 4X HD] csk1jw:
After running make on the defconfig file, the .config produced does not enable ZCACHE because it requires either CLEANCACHE or FRONTSWAP which is not enabled. The kernel command line CONFIG_CMDLINE="console=ttyS0,115200n8 init=/bin/ash zcache zcache=lz4" could be bogus.

I don't think ZCACHE is actually compiled and into the kernel then.
[LG Optimus 4X HD] Demetris:
Yes is the frontend to those. I will enable them after all other changes are tested. One step at a time.

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[LG Optimus 4X HD] streambinder:
New build is up!

Enjoy. :)
[LG Optimus 4X HD] xperia u20i:
Can confirm that. No data, no outgoing calls on CyanogenMod. Only on AOSP i have at least data fully functional.
[LG Optimus 4X HD] moneyvirus:
Same here for me aosp gives the best result for mobile data, and recieving calls only out going call is bugged
[LG Optimus 4X HD] xperia u20i:
Which is your carrier?
[LG Optimus 4X HD] streambinder:
Interesting question, as not everybody has these kind of issues.

I would be glad if everyone that is experiencing those issues could provide these informations: carrier and country. :)
[LG Optimus 4X HD] xperia u20i:
I look in that a little and in most cases problem is on T-Mobile. And on Euphoria build from 10.01 the problem occur also on 3 AT in Austria.
[LG Optimus 4X HD] moneyvirus:
My carrier is t-mobile/simpel the netherlands
[LG Optimus 4X HD] AndroidholicCOL:
[MENTION=4574921]MidnightDevil[/MENTION], I will try it that way!! Thank you my friend! :)
[LG Optimus 4X HD] tool_king:
I have to correct you in this point, mate! As far as I know, [MENTION=4260743]varadinum[/MENTION] and me are the only one with 3 AT as carrier, and we both managed to solve our problems by booting and manage the relevant settings first, and then rebooting and flashing the GApps.
[LG Optimus 4X HD] xperia u20i:
Oh, yes. Thanks. Interesting how two of you was able to correct that with that method of installing. Cause in My case that does not solve the problem.
[LG Optimus 4X HD] streambinder:
It means that the issue was not caused by sources.

Interesting is the fact that - as I can understand - only T-Mobile users are having this issue.
[LG Optimus 4X HD] xperia u20i:
Later i'll try with other sim card from other carrier. To see once for all...

Will report in next few hours.
[LG Optimus 4X HD] Twistek:
When you turn off the button illumination candle can be even on the Lock screen
[LG Optimus 4X HD] streambinder:
What do you mean?

Are you talking about buttons backlight while device is locked down?
[LG Optimus 4X HD] Twistek:
after turning off the "search bar" (from the main screen) is still
[LG Optimus 4X HD] streambinder:
Sorry, dude, still don't understand what you mean.
[LG Optimus 4X HD] Jack_capvil:
I am on French ORANGE carrier and I also have problems with calls. With the last build keyboard force closes so that it is very difficult to use this version of the rom. The previous one was better for me.
[LG Optimus 4X HD] vieri_202:
does even any camera app will work on this rom? i want give it a try but camera is very important to me
[LG Optimus 4X HD] Optimissimus99:
Google cam works well
[LG Optimus 4X HD] jonas1210:
calls

This rom is very smooth, I had it clean installed but the outgoing calls didn't work. My provider is O2 in germany - not T-Mobile! I really want to use this rom but so I can't :/ please fix this
[LG Optimus 4X HD] xperia u20i:
Most probably you will need to change sim card. I did not manage change My sim to make a test today. Maybe tomorow.
[LG Optimus 4X HD] csk1jw:
I would like to make a small correction to the changelog - ZCACHE is not enabled because the frontend to ZCACHE is not enabled.
[LG Optimus 4X HD] Demetris:
I suggest to "make mrproper" on your kernel dir because zcache is working just fine here
[LG Optimus 4X HD] EsromTech:
[MENTION=5889675]streambinder[/MENTION],

only to report:

This latest update is really fantastic, quickly and with better performance ...

I would say that not only this, but earlier too, does not work the QR code reader, that is .... I can not use whatsapp the web.

[MENTION=1149134]Demetris[/MENTION], I wonder if, with this advance did you have with the kernel, when it will begin nightly from cm12.1?

Because with this update of the kernel codes was very fast and stable ...
[LG Optimus 4X HD] csk1jw:
I already did. I was under the impression that streambinder will use the CM-12.1 as-is. Yes, ZCACHE will work if the frontend is enabled. I don't see either CONFIG_CLEANCACHE or CONFIG_FRONTSWAP being enabled in the final .config after running make defconfig. If streambinder had modified the kernel defconfig to enable CLEANCACHE, then the original changelog was correct.
[LG Optimus 4X HD] streambinder:
Already reported, thank you anyway, mate. Appreciated.

So sad, though, that I cannot do anything but keeping this ROM updated. I understand your needings, but fixing a problem like that, without owning no more the device is really difficult.

Hope to get some updates about that from the other developers.

Nope, I haven't. I'm just using pure cm-12.1 branch, from [MENTION=1149134]Demetris[/MENTION].

The reason I wrote the changelog that way is about the fact I usually write every new commit included in the build as it is written on sources.

No problem, will correct.
[LG Optimus 4X HD] Sutko024:
Lags and stutters

I would like to give a feedback about my experience with this ROM. I flashed the latest version last night on my rooted and UBL P880 and flashed pa_gapps-stock-5.1-20150315-signed. Visually, I'm amazed, performance, nah. I'm experiencing lags and stutters on every step of usage, phone even overheated a couple of times. Don't know if this is the ROM or i missed some system adjustments, but I can't find governor setting either. It's just frustrating to see others going crazy about this and I'm experiencing something like this, any help, solutions, suggestions? :cowboy:

---------- Post added at 11:49 AM ---------- Previous post was at 11:46 AM ----------

Forgot to mention, battery drains like crazy, and there's a new one in the phone.
[LG Optimus 4X HD] Demetris:
[MENTION=5889675]streambinder[/MENTION]

Please resync kernel and recompile.

[MENTION=4987987]Sutko024[/MENTION] + [MENTION=5799877]csk1jw[/MENTION]

Thanks for the tests and reports

Hopefully reported issues are gone with new version.
[LG Optimus 4X HD] streambinder:
New build on the way.
[LG Optimus 4X HD] streambinder:
New build is up!
[LG Optimus 4X HD] EsromTech:
I wonder what it takes to test? Then I step what I found ...

I am running the latest and I'm feeling fine using it, there was no lags, is good ... battery drain does not seem so bad, but the cm11 is even better! ! !

the only change I have is that I will replace the Gallery application, Keyboard, Music by the same cm12.1, are running smoothly.
[LG Optimus 4X HD] AndroidholicCOL:
Hey! I had the same problem when I installed this ROM and used the Stock pack for GAPPS. I didn't even be able to activate my google account because the phone was insanely laggy, it really pissed me off and I had to go back to my previous ROM (Omni 4.4.4. Final), but then I needed to give it a try again and again but that tieme I used the PA-Gapps, the Mini-Modular-Pack, and it worked pretty well, I have to say it wasn't an awesome performance, but it was pretty well for the use I give to the phone. Maybe you can try it avoiding the Stock pack and using some of the modular packs from PG-GAPPS. Greeting from Colombia.
[LG Optimus 4X HD] Halapeti:
where i have to get SuperSU file and audioFX please help.
[LG Optimus 4X HD] goli510:
No reboot

Ciao,

ho appena istallato l'ultima ROM aosplp-20150826-p880.zip e al reboot del dispositivo rimane con la scritta android e non si stacca.

Che cosa può essere andata storta ?

Grazie !
[LG Optimus 4X HD] streambinder:
As XDA rules say, you cannot speak any other language but english, or at least write twice your message, with an english translation.

Anyway, just be sure to wipe everything before flashing. Which recovery are you using?
[LG Optimus 4X HD] dravida:
Wow, this Rom goes better and better!

Thank your for your awesome Work! :)
[LG Optimus 4X HD] giga111:
Thank you very much for this ROM and keeping up the great work!

I have one question: How can I use MHL? Or is this function lost now?
[LG Optimus 4X HD] Turbol:
@ fast questions.

Where to disable "backlight buttons", and where to eneble show battery%?
[LG Optimus 4X HD] varadinum:
World class! Thank-you!

Gesendet von meinem LG-P880 mit Tapatalk
[LG Optimus 4X HD] csk1jw:
I don't know if MHL works on this ROM, but I can tell you that "Cast screen" works. You can also download DLNA/UPnP player from Play store, all of them work for me so far.
[LG Optimus 4X HD] Demetris:
[MENTION=4755415]giga111[/MENTION]

Please test MHL if you have the cable and get me a logcat

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[LG Optimus 4X HD] aico60:
Cast screen works?Do you mean sharing pictures or video to tv?Can you try Screen sharing from display settings-screen share?
[LG Optimus 4X HD] csk1jw:
It should be "Cast screen".

Settings->Display->Cast screen. Yes, it works.:good:
[LG Optimus 4X HD] aico60:
Is it working with other rom on yojr phone?
[LG Optimus 4X HD] Demetris:
Barcode scanner will never work on grouper hacked blobs so please stop reporting it repeatedly

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[LG Optimus 4X HD] uha666:
I would like to know this too
[LG Optimus 4X HD] uha666:
Also the lollipop camera is missing the storage location, any one knows how to activate this so it can save to SD? besides installing another camera.

Regards
[LG Optimus 4X HD] csk1jw:
This is always not available in vanilla AOSP ROM. If this is important for you, then vanilla AOSP ROM may not suit you. Try others, such as CM-12.1.
[LG Optimus 4X HD] dawaherjesus:
most of the app to open them I get a warning. app not respond, do you want to close it?

that is done in these cases?

excuse my English, I speak Spanish
[LG Optimus 4X HD] mateuspecly:
What about battery life in the new updates?
[LG Optimus 4X HD] uha666:
Hi,

I attached my log cat of a conection with the mhl cable.

https://www.dropbox.com/s/x3akyr9f6cviz81/2015-08-29-16-13-02.txt?dl=0

Regards
[LG Optimus 4X HD] vieri_202:
Only one problem for me i lose network signal alot of times but signal icon is still there only one way to get signal back is reboot
[LG Optimus 4X HD] uha666:
I also have this problem.
[LG Optimus 4X HD] EsromTech:
[MENTION=1149134]Demetris[/MENTION], [MENTION=5799877]csk1jw[/MENTION], [MENTION=5889675]streambinder[/MENTION], [MENTION=5742806]Daniel Kng[/MENTION], [MENTION=6051920]fritzcola[/MENTION], [MENTION=4716493]laufersteppenwolf[/MENTION]

using already for 3 days in a row the last update, here is my support and I hope to get the night of cm12.1

Battery life:

It is close to cm11, like its duration because even see it any other rom it drains quickly ... therefore it is worth continuing using aospLP

Performance:

Much better in thier any other lollipop tested, quickly and without delay, of course not identical from cm11, but very, very close ... to be better.

errors:

Found no other than the well-known:

* Icon 3G signal disappears even when connected ... sometimes it happens, but rarely.

* BarcodeQR.

Do not take into account the second ....

Many thanks to all the support, is getting very good and stable.
[LG Optimus 4X HD] vieri_202:
Here's a tip i think it may solve our problem deactivate data roaming from network settings
[LG Optimus 4X HD] vladi-it:
+ 1
[LG Optimus 4X HD] EsromTech:
[MENTION=5889675]streambinder[/MENTION],

I made a video of rom the default screen recording feature it if you want to involve him in the initial post for those who want to see ... if you feel no need to disregard this message ....

Video on PTBR, but now you can have an idea of waiting.

https://www.youtube.com/watch?v=mxXhSKpJv5k&feature=youtu.be
[LG Optimus 4X HD] uha666:
I never had roaming activated so that is not related to the problem.

I think it maybe the baseband, i'm using this one:

LG880AT-00-V20b-EUR-XXX-JUL-17-2013

Regards
[LG Optimus 4X HD] streambinder:
Thank you, mate. Tomorrow will add it in second post. ;)
[LG Optimus 4X HD] csk1jw:
Cellular network problem

I am using the so-called the latest baseband and still have this problem.

LGP880AT-00-V20c-EUR-XXX-OCT-27-2014

However, this is very hard to reproduce and I am not sure when I will get it. I reported a similiar baseband radio reset issue on CM-11 in the post below:

http://xdaforums.com/showthread.php?p=57848703#post57848703

And I think they are related, but new in this ROM is that the issue has been hiding itself until the following events take place which bring me into attention:

- I need to make a call. The call will end immediately.

- I am out of usable WiFi area and need to switch to cellular data. It won't switch by itself.

- Someone called me at office said my cellphone went to voicemail. And I didn't even get voicemail indication. I got the indication after rebooting the phone.

The signal indicator seemed to lock at a fixed strength. It did not prompt for my SIM pins as it did on CM-11, at least. Entering and exiting airplane mode did not help.

This is a very hard problem to debug and if someone has any idea on how to get useful log on this, do share it here so that the devs can really take a look.

In CM-11, the recommendation is to stop using SIM pins. If this is OK for you (not for me), then perhaps it may solve your problem.

Radio issues are hard to debug. It is not unusual to see even stock Android phones handle it poorly. I have seen stock Android phones, especially factory unlocked ones, return to cellular pins entry screen occasionally.
[LG Optimus 4X HD] EsromTech:
[MENTION=5889675]streambinder[/MENTION], [MENTION=1149134]Demetris[/MENTION], [MENTION=5799877]csk1jw[/MENTION]

I also had this same problem, I returned to cm11 for now ...

The ROM is excellent and incredible, the only serious problem is that, thanks for the development work.
[LG Optimus 4X HD] MoonWalker92:
i am also have this problem
[LG Optimus 4X HD] superpan:
hello guys! is this rom stable for every day use ? thank you in advance for ur replies !
[LG Optimus 4X HD] Raffaele85:
The ROM is perfect for me, it's an AOSP pure ROM, there isn't customization. There are some "bugs":

- the camera works only for the photo, it doesn't work for barcode or other same things;

- somebody say that doesn't work the mobile (calls, sms..), for me is all ok (I come from Italy).

The phone is fast with this ROM, battery life is good

[MENTION=5889675]streambinder[/MENTION] [MENTION=5799877]csk1jw[/MENTION] is it normal that doesn't appear "tap & pay" button when the NFC is on (with the last play services too)?
[LG Optimus 4X HD] giga111:
Has anyone encountered the problem that all buttons are unresponsive after longer (several minutes) calls? I can't turn on the display, I can't hang up or control volume. I have to reboot. What's up with that? Does anyone know help?
[LG Optimus 4X HD] AndroidholicCOL:
Yes it is. It's good enough for every day use. A little bit laggy, but nothing so serious.
[LG Optimus 4X HD] b886b:
I am experiencing that too, I experienced that twice both happens when I am on the phone with my handset plugged in for several minutes. The phone didn't wake up after the call ended and it's pretty much like SOD. Hope that this will be fixed soon.:)
[LG Optimus 4X HD] EsromTech:
any news on fix this?
[LG Optimus 4X HD] csk1jw:
No, I am not experiencing any RIL issues lately.
[LG Optimus 4X HD] EsromTech:
but still using the aospLP?
[LG Optimus 4X HD] csk1jw:
Yes, but I compiled the ROM myself. I am at LMY48M 5.1.1_r14 and I didn't change anything related to RIL though.
[LG Optimus 4X HD] EsromTech:
you can not help with Demetris cm12.1?It is with an audio bug ... possible?

Or, you could be continuing in official lollipop for our device? if developers accept of course ...

EDIT: you can provide your build? [MENTION=5799877]csk1jw[/MENTION]
[LG Optimus 4X HD] Raffaele85:
widget problem

I don't know if it's a ROM problem, since few days my widget don't refresh, if I open the apps are updated but the widget not. If I restart the smartphone the widget are updated but stay there. I did wipe cache and wipe dalvik but don't fix the problem, I had replace the widget but was the same (they stay blank), can I do something else?
[LG Optimus 4X HD] alca71:
No more updates?
[LG Optimus 4X HD] AndreaFar:
Has GPS problem been fixed? I have tried this ROM month ago and I don't know if in current release there is such issue.

I'm very interested to flash my phone with lollipop based aosp rom, could someone list the bug problems of current release?

Is faster than stock jelly bean or slower? What about ram usage?
[LG Optimus 4X HD] lg-optimus:
Probably no, I did a lot of tests with GPS and different ROMs, no Custom ROM has such good gps results than the Stock ROM V20

C

. It took me a long time to find out, that the results with TopNTP are more worse, than with the original (stock) gps..conf In opposite the Stock ROM is very very slow compared to a custom ROM. The stock ROM is a lot better draining the battery too.

What I did not try till now, is to do tests with a Custom ROM and the original stock gps..conf

With a custom rom, I get 12m accuracy under the same conditions at the same place. I tried AOSP and Bliss, no difference in this case.

GPS-Screenshot with the V20C stockROM without AGPS inside near a window:

[IMG="lg p880 stockrom v20c and original gps conf inside without agps.png"]http://s7.postimg.org/jgl0ppskb/lg_p880_stockrom_v20c_and_original_gps_conf_insi.png[/IMG]
[LG Optimus 4X HD] AndreaFar:
Thanks for the info... however the GPS in the April release didn't fix satellite at all and used only 3g location, you can confirm that now is able to perform a gps fix with both satellite and 3g networks? Are Also NFC and other sensors working?
[LG Optimus 4X HD] lg-optimus:
Good question, I never noticed this problem with aosplp-20150826-p880 , although I used "device only"., but on the other side, I had a lot of situations, where I couldn't get a fix with different Custom ROMs, looks like they behave all the same. I think I have to give up. A mix of gps-quality of stock ROM and the rest custom ROM seems to be impossible.
[LG Optimus 4X HD] lg-optimus:
I forgot to mention, that I had to change to another ROM from aosplp-20150826-p880, because I had very strange problems with Wifi. Sometimes it worked fine and sometimes the connections was unusable at the same place with my local router. Maybe this is an energy saving problem. What confuses me more, is, that I noticed this problem now with my 2nd P880 and the stock ROM yesterday too. On the other side a Nexus 7 and a LG G3 work fine at the same time with the same router.
[LG Optimus 4X HD] csk1jw:
Kernel patch - extra_free_kbytes

Attached kernel patch for the following

Another experiment that I was trying was to forced the new Lollipop user-space LMKD to use kernel memory pressure event rather than the in-kernel driver interface from lowmemorykiller.

Here's the the chage to system/core/lmkd/lmkd.c if someone is interested to try it.

- use_inkernel_interface = !access(INKERNEL_MINFREE_PATH, W_OK);
+ use_inkernel_interface = /*!access(INKERNEL_MINFREE_PATH, W_OK)*/0;

This had been puzzling me for quite sometime as the in-kernel interface was there since Kitkat, but LMKD was only introduced on Lollipop. I supposed the new user-space LMKD has better algorithm dealing memory reclaiming on low memory occasions. However, the AOSP source code simply does not have configuration option to enable that other than modifying the source code itself. I am wondering which interface LMKD is using on existing stock Lollipop ROMs such as the one on Moto G which has the same 1GB RAM as LG-P880. Googling around did not find any interested discussion of Lollipop LMKD on in-kernel interface vs memory pressure event.

I found that LG-P880 has been lots more smoother on apps switching and Chrome browsing experience has been great so far. I am pretty sure that 1st patch to reserve at least 3 fullscreen 32bpp buffer has really helped.
[LG Optimus 4X HD] Subhajitdas298:
Is this stable for day to use?

As tittle suggests, I need basic functionalities, no fancy stuff.

Is this stable enough?

Most importantly, is this more battery efficient than stock? I need more back up time (with same battery).
[LG Optimus 4X HD] csk1jw:
[MENTION=1149134]Demetris[/MENTION]: Where was the following git commit sourced from?

It does not seem to originate from 3.4 source. I replaced the file with Google's upstream version from kernel-common android-3.4. And to my surprise, this AOSP ROM is smoother, especially for memory hogs such as Google Maps and Chrome. Existing source in CM11/CM12.x has lots of customizations, including spinlock in lowmem_shrinker, which I suspect, is bad. I suggest that we should revert back to Google's upstream source.

[MENTION=5889675]streambinder[/MENTION]: Would you still be around to build the final Lollipop ROM for LGP880?
[LG Optimus 4X HD] streambinder:
Of course I will. Just give me some time. :)