Solución a problemas de calentamiento en Redmi 1s?

[avaescaner]

Muy buenas.

Estaba valorando comprar uno de estos Xiaomi Redmi 1s, pero los problemas de sobrecalentamiento y de batería que leo por todos sitios me echan un poco para atrás.
Buscando he encontrado una posibles solución (en inglés).

Como no me deja poner el enlace, pego el texto. Para ir al original basta con pegar un trozo del texto en google:

Those who are having overheating issues, try this-

Before you start, you must know that this is not for beginners - you need to know and have the confidence to root your phone, do various tweaks that are not exactly beginner level, though what you will be doing will not damage the phone or affect your warranty.

Also note that I have gotten to try this only an hour ago, and as this is not a beginner level task - you are expected to know how to find and do the following steps without someone handholding you. If you need handholding, you should not be doing this at this time. After I am more convinced, and after other advnaced Android users can vouch they have the same result as mine, I shall give a step-by-step.

First make sure your symptom matches what I have:

• Root your phone
• Install BetterBatteryStats, open it and give it root permissions. Make sure you have set it to start automatically in Security > Permissions
• Recharge your phone to 100% (Fully Charged), unplug and use it as normal until the battery is, say 10%. Do not restart the phone for any reason during this test cycle
• Open BetterBatteryStats, and choose CPU States in the first drop down - this will give you how much time the CPU was spending in each of its speed steps, and in deep sleep state

If you see a very very high reading for the 1.59 GHz frequency, and only a few seconds or single digit minutes in the other frequency steps, then your symptom is the same and mine.

Now comes the experiment.

• Install SuperSU
• Install Busybox from XXX - the correct binary for our phone is arm7l - to /system/xbin, symlink and install it to system/bin also
• Install Trickster MOD from Google Play
• Open Trickster MOD and give it root permissions
• Go to the General options (swipe from the left edge), and touch Governor Controls
• Change the value for io_is_busy to 0
• Change up_threshold to 75
• Change up_threshold_any_cpu_load to 75
• Change up_threshold_multi_core to 75
• Apply the changes (tick mark at the top)
• Use the phone for a few hours and make sure everything is fine
• Go back to Trickster MOD, swipe from the right edge, and put a tick on Kernel Settings

After doing this, repeat our BetterBatteryStats experiment and see how the pattern is - you should have higher time spent on 300 MHz and 998 MHz, and much lower time spent on 1.59 GHz. And the phone should not heat up like before.

Post your outcomes please.

For rooted users, I have a simpler solution for this. You need to have file explorer that is capable of editing system partitions - like Root Explorer.
Edit the file named /system/etc/init.qcom.post_boot.sh


Look for the section that starts with

1. case "$target" in "msm8226")

Change the line that reads:

1. echo 1 > /sys/devices/system/cpu/cpufreq/ondemand/io_is_busy

to

1. echo 0 > /sys/devices/system/cpu/cpufreq/ondemand/io_is_busy

Now, these steps will fix the heating issue, and will ensure the CPU does not sustain at 1.59 GHz most of the time the screen is on. The drawback of this is that the phone will now show lags because the CPU is no longer at its highest frequency. To counter that, change these lines:

1. echo 50000 > /sys/devices/system/cpu/cpufreq/ondemand/sampling_rate

1. echo 90 > /sys/devices/system/cpu/cpufreq/ondemand/up_threshold

1. echo 70 > /sys/devices/system/cpu/cpufreq/ondemand/up_threshold_multi_core

1. echo 80 > /sys/devices/system/cpu/cpufreq/ondemand/up_threshold_any_cpu_load

to

1. echo 30000 > /sys/devices/system/cpu/cpufreq/ondemand/sampling_rate

1. echo 75 > /sys/devices/system/cpu/cpufreq/ondemand/up_threshold

1. echo 75 > /sys/devices/system/cpu/cpufreq/ondemand/up_threshold_multi_core

1. echo 75 > /sys/devices/system/cpu/cpufreq/ondemand/up_threshold_any_cpu_load

Make sure the init.qcom.post_boot.sh file has 755 (rwxr-xr-x) permissions, reboot.

On a related note, you can add init.d support to your phone by adding this to the last line of the same file:

1. /system/bin/logwrapper /system/xbin/busybox run-parts /system/etc/init.d

Make sure you create the init.d folder under etc with root:shell as the owner and 777 (rwxrwxrwx) permissions, and droop valid init.d scripts in it.

¿Alguien lo ha probado a ver si realmente funciona sin detrimento en las prestaciones?

Gracias!

[crislomal]

Lo mejor es instalar CM11 o cualquier otra 4.4.4

[avaescaner]

Hola Crislomal.
¿Quieres decir que CM11 soluciona los problemas de calentamiento y batería? Es que he leído en este mismo foro, en el hilo de CM11 que de vez en cuando un proceso sensors.qcom se pone a consumir como un loco...

[crislomal]

Pocas veces se me ha bebido la batería a mi CM11

[mikel0654]

A mi nunca me ha pasado lo del consumo exagerado de batería con CM11 ni con miui.
En cuanto al calentamiento, jugando se calienta por igual en CM11 y en miui, pero se soluciona haciendo underclock a 1.200Mhz como el resto de móviles con este chip.

[albertred]

Originalmente Escrito por mikel0654

En cuanto al calentamiento, jugando se calienta por igual en CM11 y en miui, pero se soluciona haciendo underclock a 1.200Mhz como el resto de móviles con este chip.

Efectivamente el underclock a 1200 y la minima a 300 soluciona el problema de calentamiento muy bien. Pero yo soy de los que padecen el sobrecalentamiento galopante con sensors.qcom y para eso nadie da con la tecla.