Tronsmart T428 Stock ROM - disccusions on the best ROM

[Finless]

No, the stock ROM I posted was dumped from my stick and is Android 4.2.2.
Kernel is #94


Bob

[Guest]

Bob, you have a private message from me.

[Guest]

So is this the same as the stock ROM can download from here?

[ATTACH=CONFIG]2156[/ATTACH]

Sorry i don't understand, in your T428 you have this as stock rom ?

[Finless]

Sorry i don't understand, in your T428 you have this as stock rom ?

Your screen shot shows 4.1.1. My T428 came with 4.2.2.
Kernel is .36+ #94

Bob

[Guest]

Thanks....

Another little suggestion, but I think you've already thought, is the comparison of the 4.1.1 stock kernel with the cube tablet kernel, to see if we can set the cube tablet kernel at 1280x720

[WatchFan1]

Bob and strauzo, thank you for your back and forth communication and Bob,
thank you for your hard work on these ROMs. I am now GLUED to this thread.
I bought CX-919 on Aliexpress (which just ran out of stock) but the seller
offered to upgrade to T428 at no charge (as they have it in stock, ready to
ship). I was excited first due to the dual band 2.4/5K modem as well as
4.2.2 Android, but now my excitement cooled off a bit as I am reading this
about 4.2 now working right (just yet) and 4.1 being faster and more stable.

With my minimal knowledge about ROMs, it seems that we would be
(at least for now) better off with a stable 4.1 ROM and then upgraded
to 4.2 over time as the bugs are being worked out.

PS: I also have the CUBE u30GT-2 and for now, I am staying away from 4.2 beta.

[Guest]

Another observation that might help to explain some things is:

The stock kernel.img size of rom 4.1.1 for T428 is 7,10 MB

The stock kernel.img size of rom 4.1.1 for MK908 is 8,07 MB

For sure, about one MB of differences not are optimizations, but i think bloatware of Rockchip.

I use the first kernel in my T428 from 7 days and it is very stable and fast and in the rom 4.1.1 with this kernel all are working very well. Specially the wifi performances and all external input devices work better of other rom. This kernel is very good.

it would be interesting to understand what these differences are.

Bob, do you know what the kernel of MK908 has added inside compared to the kernel of T428 ? (I mean the additional features visible, not the code, becouse we don't have the kernel source code)

[leolas]

Re: Tronsmart T428 Stock ROM

Another observation that might help to explain some things is:

The stock kernel.img size of rom 4.1.1 for T428 is 7,10 MB

The stock kernel.img size of rom 4.1.1 for MK908 is 8,07 MB

For sure, about one MB of differences not are optimizations, but i think bloatware of Rockchip.

I use the first kernel in my T428 from 7 days and it is very stable and fast and in the rom 4.1.1 with this kernel all are working very well. Specially the wifi performances and all external input devices work better of other rom. This kernel is very good.

it would be interesting to understand what these differences are.

Bob, do you know what the kernel of MK908 has added inside compared to the kernel of T428 ? (I mean the additional features visible, not the code, becouse we don't have the kernel source code)

The kernel size is not a valid reason to choose the kernel, you can compile a kernel for android or Linux and you can choose the uncompressed Image or zImage, they are the same kernel, and in zImage you can choose the compression type in the config of the kernel, the difference in size is about what things are integrated in the kernel or what things are build like modules or if it is a compressed kernel or not and depends too what compiler is choose.

[Finless]

Additionally a kernel boot image can be in the kernel making it larger.
The MK908 has a strange operation on boot that seems to display a full black image. It cancels out the boot.img image. Maybe later I will look and see if there is a nulled boot image in the kernel.

Bob

[Guest]

The kernel size is not a valid reason to choose the kernel, you can compile a kernel for android or Linux and you can choose the uncompressed Image or zImage, they are the same kernel, and in zImage you can choose the compression type in the config of the kernel, the difference in size is about what things are integrated in the kernel or what things are build like modules or if it is a compressed kernel or not and depends too what compiler is choose.

Yes i know, infact i think that the bigger kernel have other modules compiled inside that disturb the stability of the kernel. (for example rk mirror and rkremote that are two parts not well developed)

Assuming that the compilation and the compression are the same because the person who compiled it should be always the same or Tronsmart or Rockchip.

The mk908 4.1.1 kernel have enabled mirroring and rkremote ?

the T428 kernel 4.1.1 no.

I'm focusing on this because the same thing happened with some rom of rk3066. For example the stock rom 4.0.4 of the minix neo g4 was fast and stable without this modules in the kernel, and all the successive 4.1.1 with this modules inside had problems.

but for now they are just guesses

[leolas]

Yes i know, infact i think that the bigger kernel have other modules compiled inside that disturb the stability of the kernel. (for example rk mirror and rkremote that are two parts not well developed)
Assuming that the compilation and the compression are the same because the person who compiled it should be always the same or Tronsmart or Rockchip.

but for now they are just guesses

Not allways is the same person who compiled the kernel, and if is the same person the kernel is not always compiled in the same machine, for example, I have in my notebook ubuntu 13.04 and in my desktop ubuntu 12.10, if I compiled the same .config with the same sources I assure you the Img and zImage in both machines will not fit.

If you use dmesg in terminal on the stick you will see much better than in kernel size what functionalities are enabled in the kernel.

[Guest]

Not allways is the same person who compiled the kernel, and if is the same person the kernel is not always compiled in the same machine, for example, I have in my notebook ubuntu 13.04 and in my desktop ubuntu 12.10, if I compiled the same .config with the same sources I assure you the Img and zImage in both machines will not fit.

If you use dmesg in terminal on the stick you will see much better than in kernel size what functionalities are enabled in the kernel.

It is clear what you're saying I understand it very well.

i ask the question in another way.

The modules for mirroring and rkremote are active in the kernel of the mk908 ?

In the T428 kernel 4.1.1 no and all is stable. is the first time that i see a rom so stable, but the first time a rom without mirror and rkremote. (in truth the second time)

[leolas]

Re: Tronsmart T428 Stock ROM

It is clear what you're saying I understand it very well.

i ask the question in another way.

The modules for mirroring and rkremote are active in the kernel of the mk908 ?

In the T428 kernel 4.1.1 no and all is stable. is the first time that i see a rom so stable, but the first time a rom without mirror and rkremote. (in truth the second time)

Ahh, ok i undrerstand you now, sorry but English is not my mother language and sometimes I miss something.
In rk3066 sources rkremote is enabled by default mirror not, in rk3188 we don't have the sources, and I don't have an rk3188 device yet (untill we get kernel sources for it I will not buy one) but you can see with booth firmwares with dmesg and lsmod what is enabled in kernel and what is enabled by modules. If someone can upload both dmesg and lsmod I can search on it.

[Guest]

No no, the problem is my English, sorry you. I write English very badly. I know sorry.

[leolas]

No no, the problem is my English, sorry you. I write English very badly. I know sorry.

no problem about it, if someone give me both dmesg and lsmod i will look at them and see what is different in both kernel.