[KERNEL OMAP4] Dhollmen espresso

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galoneta

Senior Member
Nov 15, 2010
161
59
Reporting.
At P5110 - Replaced setcpu with kernel adiutor from F-Droid: GPU was running at 384MHZ, set now to 512MHZ. Tablet runs faster than before and keeps stable so far!
Will keep testing and reporting.
 
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galoneta

Senior Member
Nov 15, 2010
161
59
Hi tuxafgmur,
In my P5110, build Dhollmen_Slim_Kernel_OV-20190408 is running fine so far! Do you recommend upgrade to new build from april 13 in this tablet ?

I have used app Gravity Screen 3.10.1 to control screen turning on or off in ou tablets to avoid using the physical buttons.
Compared to the old rom + kernel combo I used (CandySiX-espressowifi-1.1.1-UNOFFICIAL-0320.zip OR cm-13.0-20161216-MARKOX89-espressowifi AND DhollmenM-Espresso_Kernel_20160629) this actual combo (Slim-espressowifi-6.0.1-Dhollmen-20190331 + Dhollmen_Slim_Kernel_OV-20190408) sometimes seems slower to wake up or rotate the screen or even does not wake the device when turning / moving it requiring to use the psysical button!

Is there any fix or diagnostic test we can do to get this working faster \ better ?

Thanks.
 
Last edited:

galoneta

Senior Member
Nov 15, 2010
161
59
Update about new kernel Dhollmen_Slim_Kernel_ST_OV-20190413.zip

1- tried updating from previous build: results in no root anymore
2- tried making new install: same result, no root

Reverted back to original twrp backup with Dhollmen_Slim_Kernel_OV-20190408.zip: root is fine.

Thanks.
 

tuxafgmur

Inactive Recognized Developer
Feb 10, 2013
1,097
3,249
Spain
Hi tuxafgmur,
In my P5110, build Dhollmen_Slim_Kernel_OV-20190408 is running fine so far! Do you recommend upgrade to new build from april 13 in this tablet ?
I have used app Gravity Screen 3.10.1 to control screen turning on or off in ou tablets to avoid using the physical buttons.
Compared to the old rom + kernel combo I used (CandySiX-espressowifi-1.1.1-UNOFFICIAL-0320.zip OR cm-13.0-20161216-MARKOX89-espressowifi AND DhollmenM-Espresso_Kernel_20160629) this actual combo (Slim-espressowifi-6.0.1-Dhollmen-20190331 + Dhollmen_Slim_Kernel_OV-20190408) sometimes seems slower to wake up or rotate the screen or even does not wake the device when turning / moving it requiring to use the psysical button!

Is there any fix or diagnostic test we can do to get this working faster \ better ?
Thanks.


About kernel: use the 20190413 version.


About Gravity Screen: for now, I cant' say nothing about.

I suggest the following test:

Uninstall that application
In Settings> Personalization> Navigation> Navigation bar> Buttons:
assign 'Screen off ' action to 'long press' Home Button (for example)

Try to turn off the screen by long pressing the home button.
But with this method, to turn the screen you must press the power button.
 

galoneta

Senior Member
Nov 15, 2010
161
59
About Dhollmen_Slim_Kernel_ST_OV-20190413.zip in P5110 with ROM Slim-espressowifi-6.0.1-Dhollmen-20190331.zip: as I wrote before today, tried again making update from previous Dhollmen_Slim_Kernel_OV-20190408.zip and new flashing from zero with the same ROM: same result = there is no more root with this combination.

Reverted back to previous combo.

Any idea ?

About kernel: use the 20190413 version.
 

tuxafgmur

Inactive Recognized Developer
Feb 10, 2013
1,097
3,249
Spain
About Dhollmen_Slim_Kernel_ST_OV-20190413.zip in P5110 with ROM Slim-espressowifi-6.0.1-Dhollmen-20190331.zip: as I wrote before today, tried again making update from previous Dhollmen_Slim_Kernel_OV-20190408.zip and new flashing from zero with the same ROM: same result = there is no more root with this combination.
Reverted back to previous combo.

Any idea ?


Slim-espressowifi-6.0.1-Dhollmen-20190331.zip --->> Slim_Kernel_OV-20190413.zip

Kernel ST_xx no includes root as slim "oficial" is not rooted.

After review, i found nothing wrong here.

It could be that you have disabled the root option in settings - development options?
 
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galoneta

Senior Member
Nov 15, 2010
161
59
Dear tuxafgmur,

Updating the same combo with Dhollmen_Slim_Kernel_OV-20190413.zip = root working fine!
I had used previously Dhollmen_Slim_Kernel_ST_OV-20190413.zip = no root!

Thanks again.
 
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galoneta

Senior Member
Nov 15, 2010
161
59
Dear Tux,
About this combo, I have made some benchs using antutu 5.7.1 and compared with previous build I used:

1- 2019-04-15-NO_GAPPS+Dhollmen_Slim_6.0.1_Build_31-03-2019+Dhollmen_Slim_Kernel_OV-20190413-1.47GHz
attachment.php


2-2019-04-15-NO_GAPPS+CandySIX_1.1.1_6.0.1_Build_0320+DhollmenM-Espresso_Kernel_20160629-1.52GHz
attachment.php


Thanks.
 

Attachments

  • 2019-04-15-NO_GAPPS+Dhollmen_Slim_6.0.1_Build_31-03-2019+Dhollmen_Slim_Kernel_OV-20190413-1.47GH.png
    2019-04-15-NO_GAPPS+Dhollmen_Slim_6.0.1_Build_31-03-2019+Dhollmen_Slim_Kernel_OV-20190413-1.47GH.png
    59.1 KB · Views: 1,010
  • 2019-04-15-NO_GAPPS+CandySIX_1.1.1_6.0.1_Build_0320+DhollmenM-Espresso_Kernel_20160629-1.52GHz.png
    2019-04-15-NO_GAPPS+CandySIX_1.1.1_6.0.1_Build_0320+DhollmenM-Espresso_Kernel_20160629-1.52GHz.png
    59.8 KB · Views: 1,025
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tuxafgmur

Inactive Recognized Developer
Feb 10, 2013
1,097
3,249
Spain
Dear Tux,
About this combo, I have made some benchs using antutu 5.7.1 and compared with previous build I used:

1- 2019-04-15-NO_GAPPS+Dhollmen_Slim_6.0.1_Build_31-03-2019+Dhollmen_Slim_Kernel_OV-20190413-1.47GHz
attachment.php


2-2019-04-15-NO_GAPPS+CandySIX_1.1.1_6.0.1_Build_0320+DhollmenM-Espresso_Kernel_20160629-1.52GHz
attachment.php


Thanks.

I think these compared values are within normal limits.
The small frequency difference more than justifies the values differences in RAM and CPU. :)
 

galoneta

Senior Member
Nov 15, 2010
161
59
Hi Tux,
The difference in MHZ = 50 = 3,4%
The difference in Antutu Bench points = 212 = 1,2%
Conclusion = Little or NO difference / NOT statistically significant
 

migo1979

Member
Nov 5, 2017
26
7
Short question, I found these both files on the page from tuxafgmur, can you tell me why I should use it?

Gapps 6.0.1 20190331
Gapps 6.0.1 NoInit 20190331
 

loithuxua

Senior Member
Jun 6, 2008
50
1
42
Ho Chi Minh City
cool kernel man, I install it with your slim 6.0.1 on my p5113 and everything works well so far, I need more time to test.
For the time being, youtube playback is very smooth mush smoother than other roms. Most importantly, there seem to be no lag after using the device for a while.

I really want to try it with Lineage 14.1, is it compatible?
 

Inmobible

New member
Dec 3, 2013
1
0
Dhollmen OMAP4_TI espresso kernel

Credits for Kernel Team and anyone else who has worked on this variant.



FEATURES:
  • Cpu starts boot at 1216 MHz.
  • Gpu starts boot at 384 MHz.
  • Undervolted.
  • Starts boot with 'interactive' as cpufreq governor.
  • Starts boot with 'deadline' as block scheduler.
  • CPU overclock selectable up to 1472 MHz. (see versions)
  • GPU overclock selectable up to 512 MHz. (see versions)
  • PowerVR SGX 540 modules built 'in',
  • Tweaked Init process (Slim 6 variant only)
  • Network CIFS support.
  • Reduced operating voltage by a notable percentage.
  • Added several optimizations to improve performance and reduce overhead.

VERSIONS:
  • EX version:
    Uses 300, 600, 800, 1008 and 1216 MHz CPU frequencies.
    Uses 307 and 384 MHz GPU frequencies.

  • OV version:
    Uses 300, 600, 912, 1216, 1360 and 1472 MHz CPU frequencies.
    Uses 307, 384 and 512 MHz GPU frequencies.
    Rooted room needed to change the frecuencies.

  • ST_EX version: normal stock Slim 6.0 only
    Uses 300, 600, 800, 1008 and 1216 MHz CPU frequencies.
    Uses 307 and 384 MHz GPU frequencies.
    Normal Slim 6 rom is not rooted, to appear certified in Google-Play. This version tries don't break that certification.

  • ST_OV version: normal stock Slim 6.0 only
    Uses 300, 600, 912, 1216, 1360 and 1472 MHz CPU frequencies.
    Uses 307, 384 and 512 MHz GPU frequencies.
    Normal Slim 6 rom is not rooted, to appear certified in Google-Play. This version tries don't break that certification.
    To change to high frequencies you need your rom rooted.

  • For all versions there is a specific variant for 7 inches models P31XX


Mention for nemes480 who has kindly put his time and his tablet at disposal to establish the best voltages for the 7-inch model.


Download Dhollmen 6 & Slim 6 releases


WARRANTY: You agree that this product is provided "as is" without any warranty, either expressed or implied, on its operation.
DISCLAIMER: You assumes at your SOLE RESPONSIBILITY and RISK all results produced by the "software" and/or instructions in this thread.


XDA:DevDB Information
Dhollmen kernel omap4, Kernel for the Samsung Galaxy Tab 2

Contributors
tuxafgmur
Source Code: https://github.com/Dhollmen/Kernel_omap4_ti_espresso

Kernel Special Features:

Version Information
Status: Beta
Beta Release Date: 2019-04-08

Created 2019-04-09
Last Updated 2019-04-13

Work on Slim7?
 

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  • 11
    Dhollmen OMAP4_TI espresso kernel

    Credits for Kernel Team and anyone else who has worked on this variant.



    FEATURES:
    • Cpu starts boot at 1216 MHz.
    • Gpu starts boot at 384 MHz.
    • Undervolted.
    • Starts boot with 'interactive' as cpufreq governor.
    • Starts boot with 'deadline' as block scheduler.
    • CPU overclock selectable up to 1472 MHz. (see versions)
    • GPU overclock selectable up to 512 MHz. (see versions)
    • PowerVR SGX 540 modules built 'in',
    • Tweaked Init process (Slim 6 variant only)
    • Network CIFS support.
    • Reduced operating voltage by a notable percentage.
    • Added several optimizations to improve performance and reduce overhead.

    VERSIONS:
    • EX version:
      Uses 300, 600, 800, 1008 and 1216 MHz CPU frequencies.
      Uses 307 and 384 MHz GPU frequencies.

    • OV version:
      Uses 300, 600, 912, 1216, 1360 and 1472 MHz CPU frequencies.
      Uses 307, 384 and 512 MHz GPU frequencies.
      Rooted room needed to change the frecuencies.

    • ST_EX version: normal stock Slim 6.0 only
      Uses 300, 600, 800, 1008 and 1216 MHz CPU frequencies.
      Uses 307 and 384 MHz GPU frequencies.
      Normal Slim 6 rom is not rooted, to appear certified in Google-Play. This version tries don't break that certification.

    • ST_OV version: normal stock Slim 6.0 only
      Uses 300, 600, 912, 1216, 1360 and 1472 MHz CPU frequencies.
      Uses 307, 384 and 512 MHz GPU frequencies.
      Normal Slim 6 rom is not rooted, to appear certified in Google-Play. This version tries don't break that certification.
      To change to high frequencies you need your rom rooted.

    • For all versions there is a specific variant for 7 inches models P31XX


    Mention for nemes480 who has kindly put his time and his tablet at disposal to establish the best voltages for the 7-inch model.


    Download Dhollmen 6 & Slim 6 releases


    WARRANTY: You agree that this product is provided "as is" without any warranty, either expressed or implied, on its operation.
    DISCLAIMER: You assumes at your SOLE RESPONSIBILITY and RISK all results produced by the "software" and/or instructions in this thread.


    XDA:DevDB Information
    Dhollmen kernel omap4, Kernel for the Samsung Galaxy Tab 2

    Contributors
    tuxafgmur
    Source Code: https://github.com/Dhollmen/Kernel_omap4_ti_espresso

    Kernel Special Features:

    Version Information
    Status: Beta
    Beta Release Date: 2019-04-08

    Created 2019-04-09
    Last Updated 2019-04-13
    6
    .
    Note:

    The voltage settings that I have applied here, are different from those I used in my previous kernel.

    For now, the date of the beginning of the thread, they have only been tested on my own tablet.

    I have runned twice (in each and every one of the frequencies, CPU and GPU)
    the Antutu stress tests and 3DMark OpenGL tests.


    On the other hand, @nemes480 has carried out exhaustive tests to find the most suitable values for the 7-inch models.


    4
    Hi

    New 20190413 version uploaded

    Now the 7-inch models have a specific variant with the most suitable voltages, obtained thanks to the effort of @nemes480.
    3
    Nice work! I hope there will be nougat support too! [emoji7]
    Edt: None of Ov, Ex and St versions works with Andi's Slim6 (P3110), black screen on boot! :/
    That's because some kernel changes are missing. We'll soon switch to newer DDK on our source. @Ziyan and @amaces put a lot of time, energy and afford into getting the new ddk running from 4.4 up to 7.1. Big thanks to both of them!

    If there's special questions or something likes to be contributed back to us @tuxafgmur can contact me (even if my last email to him wasn't answered) or wait until needed changes are merged to Unlegacy Android.
    2
    Nice work! I hope there will be nougat support too! ?
    Edt: None of Ov, Ex and St versions works with Andi's Slim6 (P3110), black screen on boot! :/

    Perhaps 7-inch models can not withstand such lower voltages.

    If it is confirmed and nobody can boot from that mode, I'll have to do something about it.

    For now, regarding the overclock, this kernel is a test version,
    but I did not expect this kind of problems since, from my point of view, I have left margin enough to do boot at 1216 MHz.
    My tablet can start at 1216 MHz with a lot less voltage.

    I apologize for this issue. Thanks you for your feedback.

    EDIT

    Hi @nemes480
    Can you install the below test kernel (with higher voltages) and tell me the result?
    Thanks in advance.