Binary patched kernels for Pipo models

[Balrog]

I have seen the same artifacts during the Antutu Benchmarks.

This instability was caused by a low GPU voltage at 798Mhz.

By incrementally increasing the GPU voltage, the frame rate will increase and produce smooth video playback.

Sent from my Nexus 4 using Tapatalk

Thanks for the hint. Which GPU Voltage you use @798 MHz (which is real 768 MHz at my M6 max)?
Maybe I try it later. ;-)

[E_g_o_r]

At my M6 max the deep sleep issue was not reasoned by the kernel but a faulty driver for the 3g modem which prevents the deep sleep.

Try to rename /system/lib/libril-rk29-dataonly.so to libril-rk29-dataonly.so.old (with es file explorer or root explorer) and look if, after a reboot, the deep sleep comes back again after a few minutes after you turn of the display. Be aware that this mod makes the 3g modem unusable.

I use Riley ROM 1.7 with 1.6 kernel. Tablet sleeps OK. After changing kernel to any kernel from this thread I have no steady deep sleep
I prefer not to rename libril-rk29-dataonly.so but use kernel attached above.

[Balrog]

Then you have to dig deeper which component prevents the deep sleep e.g. with BetterBatteryStats.

[E_g_o_r]

Then you have to dig deeper which component prevents the deep sleep e.g. with BetterBatteryStats.

What for?
U'r right that libril-rk29-dataonly.so prevents tablet to sleep with new kernels (my tablet so), but I use a bundle of kernel+ROM that makes it sleep.
I don't want to use voodoo with deleting/renaming libril-rk29-dataonly, I ask guru to patch my kernel to rise device perfomance.

[rceccleston]

Thanks for the hint. Which GPU Voltage you use @798 MHz (which is real 768 MHz at my M6 max)?
Maybe I try it later. ;-)

Increasing the GPU voltage to 1350mv overcame the artifacts at 798Mhz on my tablet.

Sent from my M6 using Tapatalk 4

[Balrog]

AW: Binary patched kernels for Pipo models

Increasing the GPU voltage to 1350mv overcame the artifacts at 798Mhz on my tablet.

Sent from my M6 using Tapatalk 4

Thanks for the info. I will try the setting and test it.

EDIT:
I run tests and my M6 max is not stable with a GPU @768MHz real speed even with 1375mV. I do not want to go any further with the voltage so I stick with the current speed (it is fast enough already).

[claro966]

Hi Randy,
This attachment includes 3 different profiles with very low voltages (we've used and tested on M6pro only):
[ATTACH]3973[/ATTACH]
They have been tasted for a while be me, a colleague of mine and partially by other users in this forum (thanks Pipo2000 and Claro966).
This includes (as you can see in the excel attached) dramatically lowered voltages to increase battery duration, better frequency spacing and for "balanced" profile a sligth overclock to 1704/1,275V.
About the turbo mode, my tablet is not stable at that high frequency irrespectively of the voltage (also at 1.375V my CPU is not stable), BUT I've seen someone is able to make it working at 1.8Ghz/1.325V, so I decided to include it.

I'm now using "balanced" profile with great satisfaction. Antutu score is nearly 19500points in HD and battery duration has increased a little bit.

As I promised in the next days I'll release new scripts/kernels with an increase of +25 / +50mV to grant stability to tablet with "unlucky" CPU/GPU.

@ giouncino

Great!

Hope you will release the kernels (not only the scripts) since not all of us are able to use the phjanderson tool.

Waiting for your +25 / +50mV enpowered kernels

Claudio

[giouncino]

@ giouncinoseeat!

Hope you will release the kernels (not only the scripts) since not all of us are able to use the phjanderson tool.

Waiting for your +25 / +50mV enpowered kernels

Claudio

Tomorrow evening I'll prepare and share all the revisions (kernel and scripts)
Stay tuned!

[rrileypm]

How about starting a new download thread for just kernels. It would be closed to comments (this thread is good for that).

We can list the tablets and have a download link to a zip file containing the most up to date kernels for that tablet.

That way we have one place to go to get the most current kernels of each of our devices.

Does that sound good to you all?

[claro966]

R: Binary patched kernels for Pipo models

How about starting a new download thread for just kernels. It would be closed to comments (this thread is good for that).

We can list the tablets and have a download link to a zip file containing the most up to date kernels for that tablet.

That way we have one place to go to get the most current kernels of each of our devices.

Does that sound good to you all?

Absolutely!

It seems the right way to have order :-)

Inviato dal mio M6pro utilizzando Tapatalk

[rrileypm]

OK, I've edited post #1 to include a list of Pipo 3188 tablets supported here on Freaktab.

I will try to find a set of kernels for each of them and add links accordingly...to get us started. To add a link, just edit the post (if you can...I have admin rights, so I don't know what you guys can do on your own) highlight the text of either 3G or Wifi and hit the link button (the world icon without the red x) and add the link to the zip file.

Please use this standard zip name:

EXAMPLE: Pipo_M9Max_wifi_2.1.zip

The link is case sensitive. [Brand]_[Model]_[wifi or 3g]_[RileyROM version number the kernel came from].zip

I think this would be a good start...we might need to change it, later.

It's still OK to post individual links elsewhere in this thread, but let's try to keep post #1 as current as possible, because it is a lot handier to find the kernels this way.

[giouncino]

It seems not working: normally I can modify ONLY my posts not the posts created by others...
I'll put the kernels here in a new post tonight and if for you is not a problem you can get them and isert in the first post....

[rrileypm]

Binary patched kernels for Pipo models

Fantastic!!! I'll make the edits.


Randy

[claro966]

Great minds think alike!

[giouncino]

KERNEL PACKAGES rev1.1 Low voltages for PIPO M6pro based on RileyRom 1.3

Finally, after a long testing here are my kernel packages!!!

Generally speaking ALL these kernels will provide BETTER performaces LOWER POWER CONSUMPTION and a BETTER frequency spacing.

NOTE: My CPU is not able to working properly at 1.8Ghz irrespectively of the voltage I give it, so I inserted the turbo profile if someone is more lucky than me!

I've separated the kernels in 3 different packages:

1 - GIOUNCINO PACKAGE rev1.1 LOW VOLTAGE
kernel_cpu1608h_gpu600h_ddr720_low_voltages 1of4.zip
kernel_cpu1704h_gpu600h_ddr792_low_voltages 2of4.zip
kernel_cpu1800h_gpu798h_ddr792_low_voltages 3of4.zip
SCRIPT_overclockomatic_low_voltage_rev1.1 4of4.zip
This includes the profiles with very LOW voltages:
On my tablet the powersave and balanced profiles are working perfectly. They will grant the BEST power saving BUT if you have a "not lucky" CPU/GPU or RAM you could find these profiles NOT stable, so you can check if the kernel in the package n°2 have enough voltage increase for you

2 - GIOUNCINO PACKAGE rev1.1 LOW VOLTAGE (+25mV)
kernel_cpu1608h_gpu600h_ddr720_low_voltages (+25mV) 1of4.zip
kernel_cpu1704h_gpu600h_ddr792_low_voltages (+25mV) 2of4.zip
kernel_cpu1800h_gpu798h_ddr792_low_voltages (+25mV) 3of4.zip
SCRIPT_overclockomatic_low_voltage_rev1.1(+25mV) 4of4.zip
This package includes profile with a slight voltage increase with respect to package 1. Keep in mind that even if voltages are higher than package 1 are a lot LOWER than the stock ones (with the exception of the GPU set to 798Mhz and the CPU at 1800Mhz).
If you still do not reach the tablet stability you could test the package n°3.

3 - GIOUNCINO PACKAGE rev1.1 LOW VOLTAGE (+50mV)
kernel_cpu1608h_gpu600h_ddr720_low_voltages (+50mV) 1of4.zip
kernel_cpu1704h_gpu600h_ddr792_low_voltages (+50mV) 2of4.zip
kernel_cpu1800h_gpu798h_ddr792_low_voltages (+50mV) 3of4.zip
SCRIPT_overclockomatic_low_voltage_rev1.1(+50mV) 4of4.zip
This package includes profile with a slight voltage increase with respect to package 2. Even that package is generated with the target of powersaving...but for very NOT lucky CPU/GPU and RAM.


The details (voltage/frequency in comparison with the stock) about ALL packages are summarized in this excel file:
SoC RK3188 Freq-Volt parameters rev 1.1.zip

PS: For your reference I'm currently using the 1704/600/792 LOW VOLTAGE with very good results (no freezes). My Antutu score is nearly 19500points on HD mode.

My next step will be to find the absolutely LOWEST voltages stable for my CPU with balanced profile.
It could be also interesting to find for which reason the GPU can be overclocked only from 600Mhz to 768/798Mhz without intermediate values...

NOTE: I've included all the scripts that automatically generates all the combinations (1600CPU/600GPU/720RAM, 1600CPU/600GPU/792RAM, 1600CPU/798GPU/792RAM, 1600CPU/798GPU/720RAM, and so on...).

Randy, in your opinion can be inserted a survey in this thread where the users cans say which is the most stable kernel for them??