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Title : How disable LOGCAT output and probably save battery a little.
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Post #179
How disable LOGCAT output and probably save battery a little.
I have Lenovo P780 for more than couple of years, it is very slow and when I see the LOGCAT output the content is very big and never stop scrolling, I am not able to change all the apps that print logcat but I can disable the logcat functionality completely, please see the following steps and our device need root access.

1. Login as root in adb shell
eg: adb shell

2. Mount /system for READ-WRITE (because we need to change some file)
eg: mount -o rw,remount,rw /system

3. Remove file "/dev/log/main" (because this file is the content of the OUTPUT LOGCAT)
a. go to directory /system/etc/init.d/
b. create a new file nam "69removelogger"
c. the content of the file is:
rm /dev/log/main

4. Mount /system for READ-ONLY (to avoid other app modify the content of /system)
eg: mount -o ro,remount,ro /system

5. Reboot device
eg: just type "reboot" in adb shell

After reboot, the logcat content can not be seen, not even using AndroidStudio, cheers~

NOTE: I do this because this device is no longer for development, I use it for daily use, so it is okay without LOGCAT function.
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Write : 2016-10-13 16:12:32
Last edit : 2016-10-13 16:19:27

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