Develop Bugs

[Q] App Lag, Choppy Scrolling, Slow Loading Apps... Anyone else?

Hi All,
I have had my GSM GNEX for almost a month now and have already suffered from the weird bug of loosing signal for no reason after flashing any 4.0.3+ AOSP ROM ( I have a thread dedicated to this here http://forum.xda-developers.com/showthread.php?t=1487239 ) and I have to say that after using it for a while now, the performance is NOT what I was expecting.
Apps take WAY longer to load on my GNEX then they do on my SGSII both on H Data and on WIFI. Apps include Facebook, XDA Premium, etc...
Scrolling within these same (or any other) apps is very laggy and choppy compared to my SGSII and just general response of the apps is quite laggy compared to the same apps on my SGSII and again this is using both H Data or WIFI.
Has anyone else noticed this at all? If you think it may be ROM based then please see my signature for info.
Does this / Could this have anything to do with the "Force 2G rendering" option in the settings menu? I have not had it turned on since I got my GNEX...
Thanks...

I think you're experiencing the same compare/contrast that I am vs the SGSII. I think it comes down to the gpu (potential cpu as well) influence. My first impressions are that I'll get lag + choppiness when multitasking +/- what those tasks might be.
Also, widgets in the app drawer, forget about it, various kernels and ROMs and drawer lag is typically there with widgets in the drawer for me, at least from a "cold start".
That said, I'm much happier with my GN that I am with my I9100 despite the apparent hw advantages of the I9100.

mudferret said:
I think you're experiencing the same compare/contrast that I am vs the SGSII. I think it comes down to the gpu (potential cpu as well) influence. My first impressions are that I'll get lag + choppiness when multitasking +/- what those tasks might be.
Also, widgets in the app drawer, forget about it, various kernels and ROMs and drawer lag is typically there with widgets in the drawer for me, at least from a "cold start".
That said, I'm much happier with my GN that I am with my I9100 despite the apparent hw advantages of the I9100.
Click to expand...
Click to collapse
Thanks for the reply... I don't have any widgets in my drawer nor do I really have many apps running simultaneously as I'm a bit OCD when it comes to closing apps that I am not using. I have turned on the "Force 2G rendering" option and it SEEMS to have made a SLIGHT difference (at least in my mind... lol).
Also... have you (or anyone) also noticed that the colours / screen on the GNEX just don't "POP" like they do on the SGSII? My colours (compared to my SGSII) just seem very "blah". Could this be due to the fact that the SGSII is SAMOLED + and the GNEX is only SAMOLED? Would it really make THAT much of a difference? Does the option on the SGSII for Standard, Dynamic and Movie really make that much of a difference?

I dont know could be causing this, but mine seems smooth like always. Maybe the SGS2 is just that much better? I dont use 2d rendering either as for me that makes thing laggy and choppy.

I'm using Leankernel 2.2 now and smoothness is great; it's posted in the CDMA dev forum, but is compatible with GSM as well.

mudferret said:
I'm using Leankernel 2.2 now and smoothness is great; it's posted in the CDMA dev forum, but is compatible with GSM as well.
Click to expand...
Click to collapse
That's the other thing about MY GNEX though. As I said... I had the weird bug with my device after flashing any AOSP 4.0.3+ ROM where I would randomly just lose signal ALL TOGETHER making the phone pretty much useless and the ONLY thing that I found that fixed the issue was using the FuGuMod Kernel so I am scared to try any other kernels.
Take a look at the link I posted in my first post for more info. Others have also experienced this bug(?).

Re: signal drop.
I haven't experienced it yet, although I only purchased the phone on Sunday, it was 4.0.3 20 minutes after buying however.

mudferret said:
Re: signal drop.
I haven't experienced it yet, although I only purchased the phone on Sunday, it was 4.0.3 20 minutes after buying however.
Click to expand...
Click to collapse
Mine was flashed to 4.0.3 too almost as quickly and the strange thing is that on Stock 4.0.1 AND on ARHD 4.0.2 ROMS the signal would not drop with the stock OR ROM included Kernels but as soon as I flashed to 4.0.3 the signal would drop like every 5 minutes and the only thing that fixed it was using the FuGuMod Kernel. I am using the UGKL1 radio as well since I am here in Canada and yes... I have tried like ALL the other radios and so far the UGKL1 seems to be the best.

yiannisthegreek said:
That's the other thing about MY GNEX though. As I said... I had the weird bug with my device after flashing any AOSP 4.0.3+ ROM where I would randomly just lose signal ALL TOGETHER making the phone pretty much useless and the ONLY thing that I found that fixed the issue was using the FuGuMod Kernel so I am scared to try any other kernels.
Take a look at the link I posted in my first post for more info. Others have also experienced this bug(?).
Click to expand...
Click to collapse
I have to say that kernel is not responsible for signal loss it is your modem . You should also understand that flashing a rom can't change your modem, only if u flash it manually . So I advice you to visit modem collection topic and try several , the efficiency depends on mobile network you use , so I can't name the best for you. As for me UGKK7 works better than others .
Sent from my Galaxy Nexus using Tapatalk

Speaking about choppiness and lag ... I tried almost all kernels and roms and my verdict for performance hungry : use MoDaCo + Franco kernel 13 .1 or AOKP with the kernel mentioned above . You will be very impressed . But pay attention 13.1 version of kernel not the latest cuz this one is rock stable and very very smooth like nothing else
Sent from my Galaxy Nexus using Tapatalk

beeboss said:
I have to say that kernel is not responsible for signal loss it is your modem . You should also understand that flashing a rom can't change your modem, only if u flash it manually . So I advice you to visit modem collection topic and try several , the efficiency depends on mobile network you use , so I can't name the best for you. As for me UGKK7 works better than others .
Sent from my Galaxy Nexus using Tapatalk
Click to expand...
Click to collapse
I know it sounds silly that a kernel seemed to fix the signal drop issue as I thought it was weird as well but if you look at my thread (link is in my first post) you will see that it is not ONLY me who has fixed this issue by using the FuGuMod Kernel. There are about 10 others who have posted the same success and some who have posted that OTHER Kernel/Radio/ROM combos have fixed their issues as well when NOTHING ELSE had worked.

In your case, I would go to the Samsung website, and download the stock firmware, and stick with that, just root it, and flash recovery (if it get's erased)
Then check if your problem maintains, if it does, relock bootloader, and send it back to Samsung (warranty) if not, then it's the ROM and/or kernel you had installed with the AOKP ROM...

familyguy59 said:
In your case, I would go to the Samsung website, and download the stock firmware, and stick with that, just root it, and flash recovery (if it get's erased)
Then check if your problem maintains, if it does, relock bootloader, and send it back to Samsung (warranty) if not, then it's the ROM and/or kernel you had installed with the AOKP ROM...
Click to expand...
Click to collapse
I have a nandroid backup of my stock ROM rooted and with CWM and like I said... I do not lose connection while on stock ROM which for me is 4.0.1
I only started losing signal when I flashed ANY aosp 4.0.3+ ROMs until I flashed the FuGuMod Kernel which seems to have fixed the signal loss issue so unfortunately...
Sending it to Samsung for warranty wont do any good cause on stock there is no issue and if I send it back while on a custom ROM they will void my warranty so I'm kinda hooped either way...

[AOKP] ICS Really really slow data/wifi speeds

Hey, I was wondering, I'm currently running AOKP milestone 6, with Darkside's Venom Rom using the UVLE1 radio, which are great! I love everything (almost) about the rom/kernel combo. But I notice that my data AND wifi speeds are horrible. I did a search on xda, and came across topics of speeds dropping a little but, but when I said horrible, I mean like it takes minutes (10, 15) sometimes longer or not at all for me to check/send messages through google voice. Its getting harder to use because of the sluggishness, but I don't want to try another rom because AOKP is amazing. I had originally been on UVLC8 radio, but I thought that was the problem, because I read somewhere else that the speeds depend on a mix and match, depending on your location (I'm in the North Eastern part of the US). Any help on this would be greatly appreciated! If I'm not detailed enough, please let me know.

What exact speeds are you getting?
Throttled maybe?
Did you try flashing again?
Try multiple radios
sent from my beastly T-989

Hey Rob, thanks for your reply. So I tried to download some speed test apps from the play store...and even the small sized one (abt 76kb) wouldn't download correctly!. I'm pretty sure I'm not throttled because I haven't reached my limit in 4g usage. So is your suggestion now to just try different radios until I find one that works? or should i just wipe data and reflash everything over? Thanks again for your help!

lumpyness26 said:
Hey Rob, thanks for your reply. So I tried to download some speed test apps from the play store...and even the small sized one (abt 76kb) wouldn't download correctly!. I'm pretty sure I'm not throttled because I haven't reached my limit in 4g usage. So is your suggestion now to just try different radios until I find one that works? or should i just wipe data and reflash everything over? Thanks again for your help!
Click to expand...
Click to collapse
Personally, I would try a different radio. however, if that still doesn't work, it could just simply be a bad flash all together and simply starting over would help out to fully diagnose whats going on

Try the new uvlg3 radio my data is rocking on aokp 7/15 ics after i flashed it .
Sent from AOKP greatness.

I'm also getting great speeds on the new radio compared to the previous radios
Sent from my SGH-T989 using xda premium

[Q] Porting CM10 A100 to A101

Hi Everyone, can anybody tell me how to port CM10 A100 to Iconia A101, coz I always use A100 ROM but I lose my 3G capability?
Thanks Before

Well, I you'd need 3g drivers. Etc maybe drop the 3g apps in? I may not be possible. Might also need source changes.
Sent from a Soviet base in Indiana

I know this thread is older... But to answer your question: it must be built into the source before compile it - just to sum it up. But that's what I want to do.
I planned some projects for A100/101
- build an existing Rom (cm9) with 3g to serve a101 users (cm9 is most stable)
- recovery with dual boot (and run Ubuntu n near android)
- start 4.2 builds
This is lot of work and will take a lot of time, any help appreciated.
Gesendet von meinem A100 mit Tapatalk 2

Eh. 4.2 was booting just no WiFi and lots of little UI stuff.
Sent from my vangogh using xda app-developers app

das_webos_transformer said:
Eh. 4.2 was booting just no WiFi and lots of little UI stuff.
Sent from my vangogh using xda app-developers app
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Click to collapse
Well, nice to know. Could be a good starting point.
Gesendet von meinem XT910 mit Tapatalk 2

dtrail1 said:
I know this thread is older... But to answer your question: it must be built into the source before compile it - just to sum it up. But that's what I want to do.
I planned some projects for A100/101
- build an existing Rom (cm9) with 3g to serve a101 users (cm9 is most stable)
- recovery with dual boot (and run Ubuntu n near android)
- start 4.2 builds
This is lot of work and will take a lot of time, any help appreciated.
Click to expand...
Click to collapse
How are things progressing? I found the following old info:
pio_masaki said:
It can have 3g just fine, I've asked a few times for the 3g ril files from 101 users wanting me to build for them, they always vanish and I never hear back about it.
A100 just had its rotation for builds last night / this morning so it'll come up again sometime between wed-fri I think. Been looking at updating the black bean build and maybe adding AOKP as well, I'll use them for testbeds. I may go ahead and just do an extra day on the A100 and see about getting a potential 3g build up for you.
Side note, sosei will use gps if you use the newer cm10 boot.img.
Current rotation is:
Nexus 7 holds priority as I've been invited to Team Sorcery as their N7 dev.
Toshiba Thrive 4.2 development, 4.1.2 updates and kernel work (voodoo sound) comes second as they've been extremely generous to me.
Droid DNA aosp porting as the device was pretty much donated
Slight GNex work as needed, rare
A100 is bottom/last as I don't own one, luckily fixes from the thrive usually directly move over to the A100
Other devices I don't own.
I have a few things planned for the A100 for some nice updates and releases to jeep you guys in a variety of ROMs, like AOKP and some updates to the cm9 kernel I use.
Sent from my Nexus 7 - JBSourcery 4.5
Click to expand...
Click to collapse

Things are going slowly... Too much work in the office. But I set up a working tree some weeks ago for CM9 and a kernel. As soon as I have some more time I'll continue this. I was also busy with a kernel for the moto razr. Once I had a whole team, but now I'm alone... Will take time.
M.o.t.o.r.o.l.a.R.a.z.r - JBX-Kernel 0.5a - Tapatalk4

sorry for revived such an old thread,
i've managed to port cm10 to iconia a101, 3g and other is working properly.
but it still got a couple of bug,just wanna know if there someone here who could help me fix some bug left (let's say like gps) :fingers-crossed:

What is your base and port ROM that you used? ie what CM10 rom did you use or did you build from source? What kernel did you use?
Also you need to be more specific on the issues that you have, as well as logcats otherwise there is nothing any of us can do.

I port the rom for a500 from tegra owner forum and using gm kernel with it,
So far bug that i noticed just the gps and flash,
The gps won't start, in the gps log it mention something wrong with the hal configuration
And i noticed that the file in /dev/bus/usb/002 doesn't exist which were the configuration was set to look.
I'll explain more specific and take a logcat tomorrow,it's already 2 am here got to work in the morning,
Thanks btw for your reply
Edit: for the base i mainly using your rom,and take some other part from some different rom
here the logcat and gps log when i tried to used gps.
Sent from my Galaxy Nexus using xda app-developers app

Your logcat is also indicating that you don't have 3g connectivity. I'm pretty sure the GM kernel does not have 3G support so no matter what you do and try to get working on this build, you won't have 3g connectivity. The first step to getting it to work is to find a kernel that has 3g activated on it.

hardslog said:
Your logcat is also indicating that you don't have 3g connectivity. I'm pretty sure the GM kernel does not have 3G support so no matter what you do and try to get working on this build, you won't have 3g connectivity. The first step to getting it to work is to find a kernel that has 3g activated on it.
Click to expand...
Click to collapse
A stock a101 ICS kernel should function well enough for testing this in 4.1.
Sent from my Galaxy Nexus using Tapatalk 2

That's what I was thinking too. I just might try that as i have had success doing the same thing with a TF300 to get 3g working
Sent from my A100 using xda app-developers app

hardslog said:
That's what I was thinking too. I just might try that as i have had success doing the same thing with a TF300 to get 3g working
Sent from my A100 using xda app-developers app
Click to expand...
Click to collapse
I've been meaning to look at 3g for the thrive also, may as well start noe since others are looking at it too lol
Tapatalked from my HTC DNA - Carbon

hardslog said:
Your logcat is also indicating that you don't have 3g connectivity. I'm pretty sure the GM kernel does not have 3G support so no matter what you do and try to get working on this build, you won't have 3g connectivity. The first step to getting it to work is to find a kernel that has 3g activated on it.
Click to expand...
Click to collapse
3g was working just fine, i've tried with several kernel including stock ics,

I'm interested in helping out fauntelroy, was going to start porting a rom, but there seems little point in re-inventing the wheel.
No idea if you're still working on it though, let me know, thanks!

Weaker LTE on AOSP?

At my house I get a fairly weak LTE signal. It seems like I get much slower speeds while on LTE when I'm running an AOSP based ROM on this weak signal. I've tried CM10.1 nighties & CarbonRom. Like I said, the signal is pretty weak so sometimes I'll lose it when on either TW or AOSP but it seems like TW works better with it. What's causing this? Is there a way to fix it? Has anyone else noticed the same thing?

It is pretty much impossible to narrow down the culprit of signal strength, just think of how many variables are out there. It is said by many AOSP ROMs give a more accurate signal bar reading than TW. TW supposedly adds some boost to make it look stronger. One thing you can do is switch modems, they work different for different areas. I personally prefer to be on the most recent one always which right now is MA6. you can also go back to a TW ROM temporarily and make sure your prl and profile are up to date. Also you want to go to settings>about device>status to see you real reading for signal strength don't just rely on what the bars say. There is usually a way to even change this in your notification bar for most ROMs. Or you can download something like sensorly or open signal in the play store to keep track.
Sent from my Nexus 7 using Tapatalk 2

GiantJay said:
It is pretty much impossible to narrow down the culprit of signal strength, just think of how many variables are out there. It is said by many AOSP ROMs give a more accurate signal bar reading than TW. TW supposedly adds some boost to make it look stronger. One thing you can do is switch modems, they work different for different areas. I personally prefer to be on the most recent one always which right now is MA6. you can also go back to a TW ROM temporarily and make sure your prl and profile are up to date. Also you want to go to settings>about device>status to see you real reading for signal strength don't just rely on what the bars say. There is usually a way to even change this in your notification bar for most ROMs. Or you can download something like sensorly or open signal in the play store to keep track.
Sent from my Nexus 7 using Tapatalk 2
Click to expand...
Click to collapse
The thing is that it isn't just the reading. When I do a speed test I generally get less than 1 mbps on AOSP, but with TW I get 3 to 8 mbps usually. This is from the exact same spot in my room & at the same time of day too. I don't know if there is a difference anywhere else I go because I don't switch ROMs while I'm out. I'm using the MA6 modem right now & found that it works best for me. I'm just confused on how LTE speeds on TW could be so much better when my modem & everything is the same.

I figured out something really weird last night. I clean flashed the CM10 stable build & LTE worked just as well as it does on TW. Then I clean flashed the latest CM10.1 nightly and LTE was performing poorly again. Could it be a problem with Android 4.2?? Anyone experience the same thing ever? I'm going to try some more tests tonight.

Fire Ball said:
I figured out something really weird last night. I clean flashed the CM10 stable build & LTE worked just as well as it does on TW. Then I clean flashed the latest CM10.1 nightly and LTE was performing poorly again. Could it be a problem with Android 4.2?? Anyone experience the same thing ever? I'm going to try some more tests tonight.
Click to expand...
Click to collapse
Strange. May be just some bugs that havent been fully worked out yet

CNexus said:
Strange. May be just some bugs that havent been fully worked out yet
Click to expand...
Click to collapse
Possibly. I did a lot more testing today. LTE signal & speed was better on all CM10 nightlies while it was still performing poorly on all CM10.1 nightlies, Slim Bean stable, and CarbonRom stable. The CM10 nightly from 12/26 (the last CM10 nightly before CM10.1) works great while the CM10.1 nightly from 12/18 (the first CM10.1 nightly) performs poorly. I tried a few more nightlies at random dates for both CM10 & 10.1 also and results were the same. So I'm guessing it has to do with Android 4.2 since all ROMs on 4.1 work fine! I'm not really sure what else I can try.

Try not using nightlies and only use stable or m snapshot. Of course you won't get stable results from a nightly. That's why they are called a nightly.
Sent from my Nexus 7 using Tapatalk 2

GiantJay said:
Try not using nightlies and only use stable or m snapshot. Of course you won't get stable results from a nightly. That's why they are called a nightly.
Sent from my Nexus 7 using Tapatalk 2
Click to expand...
Click to collapse
Haha, true. I just find it really weird that CM10 nightlies are fine while CM10.1 has the problem. The Slim Bean & CarbonRom builds I tried were supposedly stable releases.

GiantJay said:
Try not using nightlies and only use stable or m snapshot. Of course you won't get stable results from a nightly. That's why they are called a nightly.
Sent from my Nexus 7 using Tapatalk 2
Click to expand...
Click to collapse
Eh well it depends. I've found that developer builds and test releases and the such tend to function better than the "stable" releases of the same rom or package
But thats just my experience

LTE to 3G hand-off not working?

For some reason, when I move out of a LTE area, 3G just won't work - it only connects to 1x. If I reboot the phone it works, though. Is this a software issue or something that just happens with LTE?
I'm on the CM10.2 8/23/13 nightly.

Pilif12p said:
For some reason, when I move out of a LTE area, 3G just won't work - it only connects to 1x. If I reboot the phone it works, though. Is this a software issue or something that just happens with LTE?
I'm on the CM10.2 8/23/13 nightly.
Click to expand...
Click to collapse
You answered your own question, when you said what rom your on.
There's no such thing as 4.2 or 4.3 for our device or AOSP. So everthing is a port, kang and put together from other devices. Then they mod and code cdma files and mod vendor files to get it to work.
Aosp roms for a device that doesn't have a natural aosp rom has issues handling the exchange between lte and 3g it's a known problem.
I bet if you flash any TW rom it will work perfect. It's one of the little issues with aosp and these cm style roms on our device. Some roms handle it better than others but nightlies tend to experience the most bugs and also the best mods which get tested.
Sent from the future via Tapatalk 4

Sadly That's the main reason I tend to stay away of AOSP based ROMs
Sent from my SPH-L710 using Tapatalk 4
Team SXTP

I have this issue on TW and AOSP Roms equally when moving down the freeway. I think it has to due with switching towers not so much 3G to 4G for me.

edfunkycold said:
You answered your own question, when you said what rom your on.
There's no such thing as 4.2 or 4.3 for our device or AOSP. So everthing is a port, kang and put together from other devices. Then they mod and code cdma files and mod vendor files to get it to work.
Aosp roms for a device that doesn't have a natural aosp rom has issues handling the exchange between lte and 3g it's a known problem.
I bet if you flash any TW rom it will work perfect. It's one of the little issues with aosp and these cm style roms on our device. Some roms handle it better than others but nightlies tend to experience the most bugs and also the best mods which get tested.
Sent from the future via Tapatalk 4
Click to expand...
Click to collapse
if that was the case more people would be complaining about it. like when it actually was a problem. is that the reason it's not perfect? yes. is that the answer for him? no. it could be a lot of things. i'd flash back to tw and update profiles. then flash prl 16015

paychex said:
if that was the case more people would be complaining about it. like when it actually was a problem. is that the reason it's not perfect? yes. is that the answer for him? no. it could be a lot of things. i'd flash back to tw and update profiles. then flash prl 16015
Click to expand...
Click to collapse
No that exactly is the answer. People are reporting issues with signal, with hand-off between 3g and lte. Also sms sending. Especially more on the 4.3 new builds.
Sent from the future via Tapatalk 4

edfunkycold said:
No that exactly is the answer. People are reporting issues with signal, with hand-off between 3g and lte. Also sms sending. Especially more on the 4.3 new builds.
Sent from the future via Tapatalk 4
Click to expand...
Click to collapse
cool