Kernel hang while porting rom - Optimus L3, L5, L7 Q&A, Help & Troubleshooting

Hi all! I'm trying to port an L3 (e400) ROM to my L5 e612, the port rom is MiniCM9 and my base is the stock LG rom (v10_00d).
The problem right now is that, after modding the init.d and some other files from the boot.img's ramdisk, the phone just hangs on the LG logo (not a bootloop, but a kernel issue).
How can I take a kmsg/dmesg in this situation? After connecting to USB, the PC only recognizes it as LG mass storage. No ADB, no last_kmsg on /data/dontpanic/ (i've checked through twrp).
I've also tried replacing the port kernel with the base one, same result.

Related

[Q] How to Flash/Install the right Firmware and Custom ROM for LG L7 p705 or p700

I'm still newbie
But I can tweak any stock android gadget base on xda forum and all work fine, but its not fine with My LG L7 now.
I dont know how to install the right firmware and custom rom into general LG L7 P700 or P705.
As someone said If I did that, kernel wakelock will happen to My L7
All I know is I can flash any firmware of P700 or P705 into My LG L7 P705 (Or the opposite)
Please Fix Me if I was wrong​
Here step by step what I did to My L7
1. Get into Emergency mode,
2, Flash the latest Local firmware (I got Indonesia version and smetimes i get P700 or P705 european open firmware). V20B this time
3. All flash work fine, L7 reboot, and LG KDZ got and error on pc (What ever! just close and my phone already off from it when it shut)
4. Startup, get into adb on my pc.
5. Flash Root, done and reboot.
6. Flash CWM, done and reboot.
7. Startup and reboot to cwm.
8. clear all necesary (as many instruction on xda said that)
9. install zip from extrnal_sd.
Remember, My hardware and firmware is P705
Version 1 running rom for P705
1. install zip run and error code 7
Version 2 running rom for P705 with removed the first line (zip edited)
1. install zip run and error code 6
Version 3 running rom for P700
1. install zip run, done, completed and reboot
Slimkat
CM11​
After Instalation via CWM
L7 force reboot with bluescreen folowing.​
Can Someone provide the right method to install all of it in the straight line and also with link of the choosen rom that dedicated for LG L7 P705 or P700
You want to flash a custom ROM right?
It's not every time the same kernel and never flash a P700 ROM at your P705! You must read the threads and there are often posts of the developerts where they say something about P705 or P708. Just seek.
In some ROMs you must flash an other kernel and other .zip packages.
Heres a ROM that runs very good and in the first few posts there is written something about P705
http://forum.xda-developers.com/showthread.php?t=2396115
It's not 4.4 but 4.3 is much stabler than 4.4.
But if you must have a 4.4 ROM here: http://forum.xda-developers.com/showthread.php?t=2535014 (but for daily use its not as good as 4.3 ROM)
I hope i helped you.
Greetings!
please specify the rom ur dealing with,,the problem on installing a p700 rom on p705 is that u wont get deep sleep (wakelocks) ot means that phone wont sleep actually even though it seems to be sleeping( battery drains) not much but will still effect, the problem is that in p700 roms nfc in made on in the kernal itself ,
and about the status error u get when installing,,normally the first line or two lines belongs to asserts config,in which the tom checks about the phone model ,so if your are deleting these lines make sure u delete all the asserts line and not partially,,or else just change the words which says p700 to p705 thats all
---------- Post added at 09:46 AM ---------- Previous post was at 09:41 AM ----------
please go through this thread if u have some problem regrading p700/p705 http://forum.xda-developers.com/showthread.php?t=2486512
Install original firmware
root , install cwm .
Install CM 10.2 and teamhacklg's kernel for P705
and then install any other rom , this seemed to solve the above problem for me .

Bootloop ? HELP

Hello Xda. my phone is a D802 With CloudyG3 2.0 and cloudy kernel. i debloated the kernel and coul start up normally then ibooted ut in twrp recovery to flash a zip file for quickwindow fix and a 24 dpi nav bar,
but when i flashed the last to zip files i ran into a boot loop where my phone is restarting all the time. how can i get out of this boot loop ?
Reflash the ROM and check if those mods are compatible with Cloudy G3 2.0 or not...
I know there is a specific QW version for that ROM... And not sure if the navbar has been updated or not
Thx for the anwser. i had some troubles about getting into recovery but i managed to reflash and boot up again

[Q] LG G2 running CM12, no recovery or download mode, need help.

Hi guys,
I attempted to restore my G2 (D802 international 32GB) back to the stock kitkat firmware from Cyanogen Mod 12. While attempting the restore, the lg support tool gave me an error saying it had failed, however when I disconnected the device it was apparently still doing something.
I now am at a stage where I get no recovery, download, or fastboot mode, etc, however my device is connecting to my PC as qhsusb_bulk in device manager. I followed this thread: http://forum.xda-developers.com/showthread.php?t=2582142 in order to help remedy the issue, however it didn't work. I'm guessing it could have something to do with the fact that I had CM12 rather than the stock firmware of which I extracted the necessary files for my device (I extracted the files from an IMEI number provided KDZ) in place of the files provided on the thread.
Could someone help point me in the right direction? Do I need the image files from CM12, or the stock images despite the device running CM12 before hand? am I following the right process?
Thank you very much in advance for any help anyone can provide, I really appreciate it!
PS. Sorry if this has been covered before, I just haven't been able to find anything else.
Were you able to find out what the problem was? I am on CM12 myself on my G2 D802. Got some problems with TWRP. It wouldnt restore backups, and had problems with flashing ROMs ang gapps so I flashed CWM with flashify and now when I try to reboot to recovery I just get the LG logo and boot verification issue... Would really appreciate if you could share your solution if you were able to find one

[Q] cant change rom lg g2 d802 pls help

hi,
a few weeks ago i installed a stock d802 5.0.2 lollipop rom from a site called htcmania (because i am new i cant paste the thread link here)
now when i try to install other aosp roms such as blisspop or vanir the installation shows no error but when i reboot my lg logo fades away and i have this weird lines on my screen like its broken and the phone shuts down.
i managed to enter recovery (twrp 2.8.5.0) manually but i dont know what to do now.
please help me!!

Revert Cyanoid SDMerge back to Stock Rom

Hello,
I have a LG Optimus L3 E400GO (Dutch) currently containing a version of Cyanoid along with CWM Custom Recovery.
As Cyanoid is working really, really, really slow, I would like to revert to my original rom and see if I can still use a few common apps on this device.
I am having trouble reverting. I have done my best to follow this guide: http://forum.xda-developers.com/showthread.php?t=1060121
The phone is recognized by Windows as a media device and is able to work with it, but LG PC Suite does not recognize the phone. KDZ updater keeps telling me "Phone not found" (here I have USB Debugging mode on). The drivers are installed and I have tried reinstalling them.
I am sure that I have the right stock firmware.
What am I doing wrong?
Thanks in advance.

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