yashsingh1/xdaforums huggingface dataset:
[LG Optimus Black] boype:
That's a bummer... I'll try to look into it, but I think chances are rather bad that I am able to fix this. You should report this on Cyanogenmod bugtracker.

I'll definitely look into it. Can't make promises here either.

I've noticed it as well. It is only present with smartassV2 governor. In the following days, I'll benchmark some other governors regarding battery consumption when screen is active.

I cannot reproduce that problem on my device... Is this happening every time you change volume, or just in specific situations? :confused: the code changes I made to the volume steps should not be causing such a behavior...
[LG Optimus Black] In_a_state:
It happens every time I change the media volume with the volume keys. I guess a re-flash might fix it. Cheers.
[LG Optimus Black] gabwerkz:
Try...

http://xdaforums.com/showpost.php?p=17160571&postcount=77
[LG Optimus Black] kirigaze:
I think it's common problem in CM7 and some developers have found solution, maybe Boype can put the solution into his Kang/unofficial..
[LG Optimus Black] rmrajm1:
Hi i wanted to know whether your kernel will work with official lezo rom, because i like its theme very much so using it but it lags a bit so.....

please tell me can i use your kernel on this........:cowboy:
[LG Optimus Black] dabyd64:
I had a problem with the whatsapp, it said device not recogniced.

I fixed it editing the build.prop file.

I changed this lines:

ro.build.display=GINGERBREAD

ro.product.device=p970

ro.product.board=p970

to:

ro.build.display=GRJ22

ro.product.device=bproj_EUR-XX

ro.product.board=bproj

now its working. Check it for your next build :)

Edit: It lags a bit but its the launcher's problem, not the rom's. I installed the ADW Launcher EX and runs smooth as butter.
[LG Optimus Black] kirigaze:
I use whatsapp too for my regular communication, but I don't experience any problem.

Just curious, could you share us how it was? I mean the problem started when you opened the application? Or when you started chatting?
[LG Optimus Black] Marco_Mena:
Amazing rom. I've been using it for a couple of days and it is really stable and smooth.

My only problem is with some games, which seem to suffer FPS loss. For instance, "The impossible game" has framerate issues. I don't really know why, 'cause it works perfectly on other roms (based on stock 2.3.4).

Haven't tried any other game, so I don't know if it's a problem of that one game or something general.
[LG Optimus Black] ErnuB:
It is a great rom, the dealbraker though was the jumpy gps, the only rom that has been able to fix this for me is zeus, i did a full wipe, i get the lock but i lose it very fast and makes it impossible to use run training apps based on gps. perhaps one of the gps fixes in zeus would help it.
[LG Optimus Black] In_a_state:
I've tried a few flashable gps fixes, I still don't get a lock. If anyone got it working in Europe, do let us know please.
[LG Optimus Black] boype:
Is Lezo ROM based on CM7? If yes, I think the Kernel should be working with it. I didn't test it though.

The lines you changed in build.prop are generated by the CM7 source, I did not touch anything there. Also Whatsapp works without any problem for me... I only get a first-start-notification, saying that I'm running a custom ROM and Whatsapp won't give me support etc.

I suppose this is due to the writeback kernel tweaks that increase the battery life. In short, memory is not "cleaned" as aggressively as with stock settings. That means that apps remain longer in memory, which "litter" it. That said, the positive side of this is that less CPU cycles are used to evaluate what could be thrown out of the memory. This is where battery is saved. You could try different cache writeback values through init.d scripts. Also, you could try the supercharger v6 script. Just google it :)

I had GPS problems as well after I flashed an updated version of CM7 over another version (without data wipe). However, when I made a clean install with all wipes GPS locked on just fine. I'm also using GPS for running (Endomondo). Of course I could try implementing GPS fixes, but I'm not convinced this would help.
[LG Optimus Black] :
This ROM is a disaster. Yes, like the ones above me say, it's fast and has low battery consumption.

BUT THE BATTERY CONSUMPTION IS ONLY LOW WHEN IN IDLE MODE.

If you so much as touch the phone, it runs dry. And I'm not even joking. 12% in under 15 minutes of use, really? And I wasn't even playing anything, messing around.

As far as the "fast" thing, it's not surprise it is fast: THE ROM IS EMPTY. It doesn't even have GAPPS, you have to install them yourself, and even then, you can see why it's fast, having all it's graphics turned off or in black and white mode. Go figure.

All in all, it's a nice ROM, but the reasons for why it's so are rather simple and could be applied to any other ROM.

In my oppinion, Zeus is much better.
[LG Optimus Black] dcop7:
First the GAPPS is not even in the official CyanogenMod. But you only have to that once. No big deal...

Second, don't say that this is a bad ROM just because you had a bad experiment with it. For my, the battery life is great!

About the graphics... I had different theme, a ICS theme and it is fast the same. And I have many apps installed and some running in the background.

Maybe you did something wrong...
[LG Optimus Black] agritux:
jan.petras, i dont agree with you...

firstly you cant compare zeus and this rom. because, their bases is different.

you said this rom is empty, no gapps etc.

yes. but you must know, this is only modded latest cm.

cm dont include gapps etc.

it is very normal.

you can think, this rom is only tweaked cm7

if you dont want dont use :)

battery drain not same on me.

it is perfect.

i like it.

but because of some reasons, i returned to zeus.

it give sod 2 times. i didnt take logcat. sorry for this.

and incoming call sound is worse (it is about cm7 not this rom)

i cant hear people cleanly, people cant hear me cleanly

they says noisy etc.

i cant understand, why cm team dont work on camera and sound.

the all custom roms (not stock based) will base on cm

so all custom roms will have same bugs.

pfff...

i want to sell my phone now...
[LG Optimus Black] dcop7:
I have huexxx kernel 4.0 with mod and I didn't have any SOD since I've installed this kernel. Because this has the old lg drivers, you probably wont get SOD. Maybe you can try that :)

Second, about the noise. I did have that problem. One day I wipe everything, format the SD card and installed the CM7 again. It was like magic, I didn't had the sound problem again! (by the say, uncheck the "wake with the volume keys", this gave me sound problems).
[LG Optimus Black] Siguiriya:
All you people can do is moan. CM7 is great. If you din't like it, go back to stock.

With that said, i'm using this rom without any of those problems. Even GPS is fine. Try to make sure you've done everything correctly before moaning here about it.
[LG Optimus Black] dcop7:
Here is a solution for the GPS in this ROM.

Go to System/etc/gps.conf and edit the line:

to this (if you are in Europe):

For other continents:

Europe — europe.pool.ntp.org

Asia — asia.pool.ntp.org

Oceania — oceania.pool.ntp.org

North America — north-america.pool.ntp.org

South America — south-america.pool.ntp.org

Africa — africa.pool.ntp.org

This could fix the GPS problem for the people far from Germany :)
[LG Optimus Black] punktnet:
i've installed this rom mostly because of curiosity. Installed this morning and took the phone off the charger. It drained 25% batt in about 40min so flashed smthg else.
[LG Optimus Black] kokocf:
Or you can use fastfix from the market

Sent from my LG-P970 using Xparent ICS Tapatalk 2
[LG Optimus Black] dcop7:
Or that hehe :)
[LG Optimus Black] AnonymousVie:
I'm a little bit confused that what is the purpose of the fix guys? Is it about to lengthen the battery life? Because I've found that the battery life has been acceptable (although it is not very good)
[LG Optimus Black] Siguiriya:
SODs and wakelocks ;)
[LG Optimus Black] CalamitySir:
so which one do i flash now for the best result? #3 or #4...i had no SODs on #1 and #2 but it came in #3! but someone in here said that #3 is more stable...and #4 is the latest...lol which one!
[LG Optimus Black] kdo_vi:
I am on fix03 and without problems:good:
[LG Optimus Black] CalamitySir:
do i need to wipe anything when flashing the fix like that dalvik and cache? because i never did it and maybe that's how i got the SODs?!
[LG Optimus Black] bl4ck0p5:
got first SOD this morning with clean install and no fixes. gonna try to wipe dalvik+cache and then flash fix#03
[LG Optimus Black] dfavefenix:
no SOD with fix#4

Governor interactiveX
[LG Optimus Black] ErnuB:
Just a suggestion, i've been using holo launcher in your rom for a few days now and it works perfect, very smooth and it's costumisable even in it's free edition.

I'm on patch #4 for a whole day now, battery seems to have improved a bit and no SoD at all
[LG Optimus Black] Siguiriya:
I'd suggest Nemus Launcher or ADW Standalone from market. Nemus is very light and smooth. ADW, unfortunately, is not being developed anymore.

@boype: a pretty serious problem... first charge right now since I've flashed latest kernel. I took it out of the charger and the battery started draining really fast. Checked CPU spy, phone didn't go to deep sleep. In the meanwhile I got a rather weird FC from google maps, which I haven't opened in days. I checked if there are any apps causing the wakelock but I don't have anything running except for the basics. Left the phone for 30 mins and the same thing happened, deep sleep count was 00:00. After that, it happened one more time.

It seems like only a reboot fixes the wakelock problem... and it only happened when I charged it. If it help, next time I can go logcat hunting.
[LG Optimus Black] boype:
Thank you for all of your suggestions regarding the launcher. A few pages back, I remember someone asked for the LG weather and LG note (memo) widgets... I did some experimenting and I pulled them of the stock LG GB rom and made them work in CM7 :D Will include them in next release.
[LG Optimus Black] punktnet:
I've installed this rom since 15.07 and haven't changed anything in it. Just installed my apps and nothing else. So far no bugs and no freeze/sod/etc.
[LG Optimus Black] jatinmend:
Boype

Please fix sound problem in cm7

Noisy sound distorted sound in earpiece and the opposite party who is listening also complain about poor voice quality

This is the problem of original cm7

I have tried your mod but the same problem

Both side distorted sound

At some low earpiece volume it's some what OK

But on traffic or public place we have to increase volume

I hope you understand my problem

Thanks
[LG Optimus Black] rellagher:
I've installed this rom on my girlfriends OB, and one thing I noticed (I have noticed in CM7 too) is that the call quality drops a lot.. she works at a busy place and now I can hear everyone that is in the room, and her voice its not so clear (as in stock rom or Zeus). My guess is that noise canceling isnt working... :confused:

Edit: lol previous post by jatinmend also mentioning this :) we posted at the same time
[LG Optimus Black] bl4ck0p5:
i've tried all the fixes, tried wiping everything and reinstalling rom, then reapplying fixes one by one and still getting SOD :/
[LG Optimus Black] fongnd:
Will you release the included update in the next few weeks?

I need the included LG weather widget as it is more accurate than the one from the market for my area.

thanks
[LG Optimus Black] 123egg:
tried the GPS fix attempt but seems doesn't help...

And using Interactivex with freq 300-1000mhz without sleep mode fix but didn't get SOD. Weird
[LG Optimus Black] Marco_Mena:
I haven't tried any of the fixes, but I can tell that the SOD happens when I'm charging the phone.
[LG Optimus Black] kdo_vi:
Hi Boype, I changed min freq. to 300 MHz and no SOD's, no wakelocks, no huge battery drain after charging. (interactivex + fix03).
[LG Optimus Black] Siguiriya:
Ok, this is quite frustrating. I'm getting wakelocks all the damned time... tried with smartassv2 @ 200-1000 and 300-1000, same result. Also tried the same frequencies with interactivex, no change. Not getting anymore SODs, but I keep finding my phone completely dead due to the wakelocks. Honeslty, I don't think I got a single wakelock with fix #3. I'm going to flash it back and give some feedback later...

EDIT: One hour later and going fine with fix #3. Is it possible that DVFS is causing the wakelock problems on fix #4?
[LG Optimus Black] boype:
Hi again, I've been working quite a bit and re-integrated most parts of LG DVFS (and did some other stuff to the kernel). Please, test fix attempt #5, which has been posted to the OP.

I'm also working on other stuff for the next release. Should be done within some days I suppose.

Best regards
[LG Optimus Black] dabyd64:
Yesterday I tried the latest version buit, but got 2 SODs in 5 minutes.

They happened while doing some whatsapp, the phone went sleep but didnt came back. Always after sending something and waiting feedback.

I reverted back to my nandroid backup of cm-7.2.0-p970-20120704-KANG, which never gave me a single SOD.
[LG Optimus Black] Grakel:
Had a sod with fix 5. It was like 5 minutes after installing it.

Im back to fix 3.

Awesome rom bro.

Oh btw, each time I boot the phone, Ive got to put plane mode on and then off in order to get the sim unlock page. Otherwise ive got no signal. Is this a known bug?
[LG Optimus Black] Siguiriya:
Fix #3 is also the most stable for me... I'm guess it's DVFS?

EDIT: Yep... half a minute after I posted this I checked my phone, SOD with fix #5 after like an hour of use... back to #3. Boype, would it be possible to have an option somewhere to completely disable DVFS?
[LG Optimus Black] Meko07:
wakelock on fix 5:(
[LG Optimus Black] bl4ck0p5:
this rom would be perfect imho if it weren't for the wakelocks/sods some of us are getting :]
[LG Optimus Black] Grakel:
I had another sod with fix 3, this time just after recieving a call.
[LG Optimus Black] vivekrules:
can anybody provide me the link for sleep mode fix #3 as it is most stable right now..
[LG Optimus Black] boype:
I uploaded fix #6 and added it to the OP. The values used in fix #6 are pretty close to fix #3, which seems to be the best so far...
[LG Optimus Black] yomek88:
i found this:

http://xdaforums.com/showpost.php?p=17669730&postcount=8

and I'm just curious boype, why pm.sleep_mode=2 (not =1) in your kang?

edit: is it more stable or sth?
[LG Optimus Black] Siguiriya:
Got SOD within 15 minutes after flashing fix #6...

Got second SOD right after rebooting, within 5-10 minutes. Going back to #3
[LG Optimus Black] Grakel:
Hey Im wondering...

I used your kernel with miui and never got a SoD in more than a week. I also flashed your fixes from 1 to 4 and those didnt give me a sod either.

Could the sod's be related to the ROM itself?
[LG Optimus Black] boype:
I found several posts where it is said that 1 gives problems with overclocking. Throughout the fix attempt tests we conducted, I changed pm.sleep_mode to 1 and 2. Build #3, which people here say has been the most stable one, had pm.sleep_mode 2.

Man this is soo annoying :( I tried the hell of a lot of different settings for cpu transition time and governor tuneables... It just doesn't get stable. I am not sure of how to proceed from here...
[LG Optimus Black] dfavefenix:
i ve got some SoDs with fix#6 too

:=)
[LG Optimus Black] bl4ck0p5:
After flashing fix #06 i also had SODs right away. But if I change the freq from 200 to 300~1000 it seems to be more stable. I still get SOD, but takes a longer time for it to happen.
[LG Optimus Black] ErnuB:
Are people reporting SoDs doing ALL the wipes? If you get that many SoDs it could be your data. I've tried all the fixes up to #4 and no SoDs at all.

BTW fix #4 saves a lot of battery while in sleep but it drains too fast when phone is in use, any feedback about battery life?

Boype, your kang rules!! thanks
[LG Optimus Black] dfavefenix:
i did all wipes yes, and didnt have any sod until i flashed new fixes so..

But, i can do all wipes again and check
[LG Optimus Black] Grakel:
I noticed that changing min freq doesnt work. I cant do it with cm7 settings, nor with antutu cpu master. It seems to be locked at 200mhz.
[LG Optimus Black] bl4ck0p5:
I raised the same question a few pages back cuz i noticed that even after setting the frequency to a value greater than 200 the processor still used that frequency. Maybe that's what's causing the SOD for some ppl, duno :P

edit: using Nofrills CPU controller from market the freq stays according to the setup i picked 300~1000
[LG Optimus Black] Mini Franki:
When i desactivate bluetooth when im calling, no more sound from speaker... Someone have this issue?
[LG Optimus Black] timvdhoorn:
how is video camera? it still stops when recording a video?
[LG Optimus Black] N00BY0815:
Yup still stops :p
[LG Optimus Black] N00BY0815:
Confirming this "issue". I also think, that the SoDs might be caused by this. I mean you probably all already tried to undervolt/underclock or overclock and undervolt your PCs CPU. As you probably also got to know then, is that the quality of chips is slightly different. So some can uv and oc more, than others. I am quite sure, that LG also ran such tests on its hardware and decided, that 300 is a good intermediate frequency and probably also only really tested different voltages on that frequency and also configured dvfs accordingly. Thats why 200 mhz and the lower voltages then probably cause problems... but I am only guessing ;)
[LG Optimus Black] timvdhoorn:
too bad... and how is battery life/ better than zeus? of the same?
[LG Optimus Black] atillaahun:
But does video recording impossibe in all qualities, or only closes in 720p?

I think you have a pretty good point here with the different chipsets, and also have to say, that I'm surprised or what more - don't understand why the devs, such as boype, huexxx, and others hasn't got to the same conclusion (yet).

Just an interesting addition on the SoD topic, once I was listening to the radio in an earlier Zeus release, then noticed that I can't turn on the screen, the phone didn't react on any of the buttons, not even with a light vibration as used to - it was obviously an SoD. But the point is, that the radio didn't stop, I could listen to it for an other half an hour, until I got bored, and pulled out the earphones. Then just out of simple curiosity put back the plug, and the radio was still on! Didn't stop as it supposed to, and I could repeat this as many times as I want.

Which means that the Screen of Death is really just the death of the screen, not the whole phone.

What I'm trying to say here is that the DVFS is supposedly cant really handle lower CPU freqs than a certain limit (which has been set to 300 MHz by LG with a reason I assume), so when we test it with 100-200 MHz sometimes the DVFS just stops working, and won't set the freqs back to a higher value, thus we don't get the screen back.

Anyhow since I'm not any close to a dev, just tell me if I'm talking bull**** here, but what it's worth this is my theory.

Not mentioning the mistery, that if with an SoD the phone stucks at a low freq, why does a full battery goes dry in a few hours (as the stats shows it after a reboot)?
[LG Optimus Black] zoran113:
I have the same problem.
[LG Optimus Black] Siguiriya:
Fix #3 is smooth as silk for me and I haven't had a single sod , wakelock or freeze. Battery life is almost as good as zeus rom. All other fixes SOD for me.

Don't give boype, you're almost there :)
[LG Optimus Black] dfavefenix:
Flashed back Fix #3 ,and not any SoD!

With fix#6, had many while was recharging battery
[LG Optimus Black] Siguiriya:
Is there any explicit NEED for DVFS? From what I understood, boype has removed most if not all of it in fix #3, which seems to be the most stable for everyone.
[LG Optimus Black] boype:
Without DVFS (= completely removed / disabled), the phone is laggy as hell...

I now have a pretty good solution (still to be realized): I'll make the ROM's "stock kernel" a kernel without 200 MHz. I hope this stabilzes things. Additionally, I'll build an experimental Kernel with the same features, but with an additional 200 MHz setting.

While I personally didn't really experience that 200 MHz saves all that much battery, I believe it is the reason for all of the problems. Let's hope I'm right, so that the kernel finally gets bugfree.

[EDIT] I will still continue experimenting with the low frequencies - maybe a solution can be found :)
[LG Optimus Black] dfavefenix:
With FIX#3 not any SoD at momento! All going smooth!
[LG Optimus Black] chejo:
With fix#4 no SOD's so far. I went directly from without fix to fix #4.

EDIT: Just had an SOD. Trying fix #6
[LG Optimus Black] boype:
I have a new Kernel running on my phone with 250 - 400 - 600 -800 - 1000 - 1200 mhz. Will release this when I'm up again from sleep. This may get awesome ;)

Best regards
[LG Optimus Black] 123egg:
Thanks, but please don't take away 300mhz

it works the best for me (at least for this version)
[LG Optimus Black] Mini Franki:
No one get probleme with bluethooth?
[LG Optimus Black] Siguiriya:
@boype: just to give you an idea, fix #3 is the most stable Cyanogenmod has EVER been for me :)
[LG Optimus Black] boype:
Of course I understand that 300 MHz is important for some (many?) people because 200 is just not stable.

My point is, however, when 250 is stable for everyone (which is still to be seen), there is no need for 300. Also, having both 250 and 300 frequencies is rather useless from a CPU load/ramping perspective.

That said, I'll just make the 250 - 400 - (...) kernel a test kernel first. If any problems occur, I will not be stupid enough to take away the 300 MHz step for the next release ;)

Yes I read that several times now... It has also been good for many others. But there's a downside to #3 which has not been mentioned here yet: CPU transition latency is set to 66ms instead of 15ms to stabilize the 200 MHz step. CPU transition latency is the time the phone waits until it the frequency is increased (if there is a demand for a higher frequency). Now the problem with the increased CPU transition latency value is that the phone looses some of its 'snappyness' - and a value more than 4 times higher than the stock setting is just not good here.

Fix #3 may be stable the way I posted it, but if certain governor tuneables are changed, it is unstable as all the other fix attempts. I tested that. It cannot be my / our goal to use something that is 'dirty engineering'.

Long story short: When 250 MHz is stable for everyone, I claim the overall experience is better for everyone (combined with the lower CPU transition latency).
[LG Optimus Black] Siguiriya:
It's all clear now. Anxiously waiting new build. All hail boype! :D

PS: When you have a looot of free time on your hands and after the kernel is stable for everyone, it would be interesting to see if it's possible to dim the capacitive button backlight to 0. I've tried to play around a bit with some pipes located in /sys/bus/i2c/devices/2-001a, but not much luck yet.
[LG Optimus Black] boype:
Test Kernel #7 is up... :fingers-crossed:
[LG Optimus Black] CalamitySir:
let's really hope that the 200Mhz is really causing this thing because i experienced some SOD's just now with latest ROM latest kernel and #3 fix! Yes, i did use min 200mhz and max 1200mhz but i dont think this is the problem because it was actually fine like a few days ago. So i think some apps might be causing this problem as well, when i used launcherpro(saves more battery than adw ex and default home launcher) and adw ex it was perfectly fine with the settings mentioned above! However when i went to use iLauncher(a IOS style launcher), the SOD's start to appear with the settings mentioned above! So i decided to change it to Zeam Launcher for now as it uses lesser memory and saves more battery(i even had my wallpaper set to 'no wallpaper'). So i hope i am not the only one experiencing this as it would be so weird that i had SOD's even on #3 fix!! other than this, everything was perfect!