Cube T9 64bit octacore A53 4G beast.

[fztt]

Originally posted by hammerjoe View Post
My T9 keeps crashing today with the screen mess up like the one I posted earlier.
It has crashed 6 or 7 times today.

It's weird I didn't update any apps or changed any ssettings I wonder what's causing the crashes.
The blocks are completely random and are convinced depend on bugs in the operating system.

Hi Hammerjoe, devilz-wolit,

I think I've finally managed to stop my tablet from crashing by tweaking the interactive gov parameters, I've not had a single crash for the past 5-6 days no matter what I run.

Earlier, I tried to tweak with apps like kernel tuner, trickster mod, kernel toolkit, etc, etc and couldn't get the settings to stick, finally tried using init.d script & the settings finally stick.

I'm not sure whether this will work for you but if you want to try...

EDIT: THANKS TO DEVILZ-WOLIT FOR POINTING OUT, PLEASE USE ROM TOOLBOX SCRIPTER TO IMPORT, RUN & SET AT BOOT INSTEAD OF INIT.D, I JUST RE-CHECKED, ACTUALLY IT WAS THE SCRIPTER WHICH RAN. SORRY. I WAS RUNNING BOTH SIMULTANEOUSLY & DIDN'T CHECK WHICH ONE WAS SUCCESSFULLY SETTING THE PARAMETERS.

For guide to interactive gov tweaking & what each parameter do, read this:

http://forum.xda-developers.com/show....php?t=2769899
http://bamboopuppy.com/android-cpu-f...tive-governor/


To enable init.d support on your tablet, read this:

http://www.theandroidhow.com/2014/06...n-android.html


For init.d script, I used this script as the base

http://freaktab.com/forum/tablet-sup...-for-nx785qc8g

and changed the interactive gov parameters to this(last part of the script):

echo "20000 702000:60000 1170000:80000 1417000:120000" > /sys/devices/system/cpu/cpufreq/interactive/above_hispeed_delay
chmod 444 /sys/devices/system/cpu/cpufreq/interactive/above_hispeed_delay
echo "0" > /sys/devices/system/cpu/cpufreq/interactive/boost
chmod 444 /sys/devices/system/cpu/cpufreq/interactive/boost
echo "60000" > /sys/devices/system/cpu/cpufreq/interactive/boostpulse_duration
chmod 444 /sys/devices/system/cpu/cpufreq/interactive/boostpulse_duration
echo "99" > /sys/devices/system/cpu/cpufreq/interactive/go_hispeed_load
chmod 444 /sys/devices/system/cpu/cpufreq/interactive/go_hispeed_load
echo "936000" > /sys/devices/system/cpu/cpufreq/interactive/hispeed_freq
chmod 444 /sys/devices/system/cpu/cpufreq/interactive/hispeed_freq
echo "60000" > /sys/devices/system/cpu/cpufreq/interactive/min_sample_time
chmod 444 /sys/devices/system/cpu/cpufreq/interactive/min_sample_time
echo "90 468000:40 702000:60 1417000:80" > /sys/devices/system/cpu/cpufreq/interactive/target_loads
chmod 444 /sys/devices/system/cpu/cpufreq/interactive/target_loads
echo "60000 " > /sys/devices/system/cpu/cpufreq/interactive/timer_rate
chmod 444 /sys/devices/system/cpu/cpufreq/interactive/timer_rate
echo "80000" > /sys/devices/system/cpu/cpufreq/interactive/timer_slack
chmod 444 /sys/devices/system/cpu/cpufreq/interactive/timer_slack


The reason I tested tweaking the gov was because I noticed on the original settings, hispeed_freq was set to 1690000(ie highest freq band), cpu was fluctuating between min & max freq most of the time with little to no time on other bands.

After tweaking, Antutu used to be consistently between 37-38K is now between 33-34K, 3dMark IceStorm used to be between 11-12K, now it's between 10-11K... overall slower BUT no crashes for me so far from 2-3 crashes every day.


There's also a shortcut if you do not want to use init.d... download rom toolbox pro, run the scripter function, import the script & set it to run at boot, here:

http://forum.xda-developers.com/show....php?t=1895142

[devilz-wolit]

Hi Hammerjoe, devilz-wolit,

I think I've finally managed to stop my tablet from crashing by tweaking the interactive gov parameters, I've not had a single crash for the past 5-6 days no matter what I run.

Earlier, I tried to tweak with apps like kernel tuner, trickster mod, kernel toolkit, etc, etc and couldn't get the settings to stick, finally tried using init.d script & the settings finally stick.

I'm not sure whether this will work for you but if you want to try...

Thanks for the tip !!!!
Performed throughout the procedure. let's see what happens !!
I used rom toolbox at the end.

You can post your init.d folder?

[fztt]

You can post your init.d folder?

Sorry, I was running rom toolbox scripter & init.d simultaneously & didn't check until you asked... it was the rom toolbox scripter which ran successfully, already amended above.

Hope this works for you, mine still have not crashed as I type this...

[devilz-wolit]

Sorry, I was running rom toolbox scripter & init.d simultaneously & didn't check until you asked... it was the rom toolbox scripter which ran successfully, already amended above.

Hope this works for you, mine still have not crashed as I type this...

I created a script and I put in the folder init.d and now I'm trying if it works. Fingers crossed !!

[fztt]

I created a script and I put in the folder init.d and now I'm trying if it works. Fingers crossed !!

I'm also trying to figure out init.d now, simple test script to output text to logfile works fine...

[devilz-wolit]

I'm also trying to figure out init.d now, simple test script to output text to logfile works fine...

Since I started using this script I have not had the tablet blocks (normally I had 3-4 blocks per day). Encouraging !!
I think I put this script in my custom rom

[fztt]

Since I started using this script I have not had the tablet blocks (normally I had 3-4 blocks per day). Encouraging !!
I think I put this script in my custom rom

Good to know! I've tried your custom rom before, good job, everything works. Hammerjoe, I saw the screenshot you posted, your unit probably has the same defect as ours, do give it a try! Mine has gone 1 week without a reboot by today...

I see no reason for cube to set hispeed_freq to the highest band except maybe to boost benchmarking results... I've look at my other devices, even older & much slower MT6582 ones set it around the upper middle band. Checking cpu usage, it's spending much less time being maxed out now...

[hammerjoe]

I have not rooted my tab and don't plan to until I'm certain that there will be no more firmware updates from cube.
it's probably going to happen soon aanyway lol

great job finding this tweak. I wonder ii a different governor would achieve the same result?
i mean is the interactive governor the best one for octa processors?

[fztt]

The only other tweak-able gov is ondemand, which doesn't allow freq tweaks... can't get it to work. Performance has the same reboot problem as original Interactive as the way Interactive was set up, it's almost behaving like Performance anyway... best for octa is supposedly hotplug but not in our kernel...

[BamaPanda]

Joe..
Zroot is very simple. All that happens is it goes away when you upgrade. Then it is easy to set again.

Actually, I do wonder if Zroot is complete sometimes. On my T9 when I installed it, every time it acts like it did not take .. the install indicator continuing to spin. After doing it a few times, I now know that it does 'take'.... just does not show a final notice that it was successful.

I wish you well. I

[BamaPanda]

Joe..
Zroot is simple. It works, but I have wondered if it is complete sometimes. It never seems to finish, giving a final notification. After a minute of watching the install indicator spin, I just turn off debug, and unplug the USB. I then ck with my SD Maid, it is done.

I wish you well.

[giouncino]

Hotplug governor works perfectly on octacore as mt8392. I don't like interactive governor so much...

[devilz-wolit]

More than 24 hours without blocks. Never happened !!

[fztt]

More than 24 hours without blocks. Never happened !!

8 days now for me, new record well, hammerjoe, at least we now know cube CAN fix this with a rom update if they choose to, let's hope they do next update.

[hammerjoe]

The question is do they even know about this problem?