PW Kill unnecessary background services

[kdusr]

I have written an app for the Kindle to display some information.
To reduce the number of charging times(save power consumption), I want to stop all unnecessary background services.
Is there a way to list all background services on the Kindle and kill unnecessary ones?

[mergen3107]

ps -A
this is command to see ALL packages.

Get some inspiration from koreader.sh script inside koreader folder.

kill packages (via killall or stop) one by one to make sure you are not killing processes needed for your use case.

[mergen3107]

c.f., https://github.com/koreader/koreader...le/koreader.sh
Line 69 for the list, and Line 284 for when they are stopped.

In KOReader, they are resumed after koreader exits.

[kdusr]

Hi Mergen3107, thanks for your reply, I searched in the forums, found your previous post from this link : https://www.mobileread.com/forums/sh...d.php?t=345556

Does this setting save a bit on power consumption? (and does this setting block OTA?)

Originally Posted by mergen3107

@squelch
If you would like to stop Kindle sending stuff to Amazon, here is how you can do it:

Warning! Before firmware update, restore usr/bin/showlog binary, otherwise the update's gonna fail.


How to disable logging:
1) Backup files
/usr/sbin:
syslog-ng (syslog server and logging daemon)
loginfo (pulls specific info from syslog)
tinyrot (rotates log files to be pulled from remote servers)
/usr/bin:
showlog (specifies which log file to send)

2) Link log files to null location:

mntroot rw
ln -s -b /dev/null /usr/sbin/syslog-ng
ln -s -b /dev/null /usr/sbin/loginfo
ln -s -b /dev/null /usr/sbin/tinyrot
ln -s -b /dev/null /usr/bin/showlog
mntroot ro

How to Revert back:

mntroot rw
mv /usr/sbin/syslog-ng~ /usr/sbin/syslog-ng
mv /usr/sbin/loginfo~ /usr/sbin/loginfo
mv /usr/sbin/tinyrot~ /usr/sbin/tinyrot
mv /usr/bin/showlog~ /usr/bin/showlog
mntroot ro

Disable user store reset and shipping mode:

mntroot rw
ln -s -b /dev/null /usr/sbin/userstore_reset
ln -s -b /dev/null /usr/sbin/userstore_clean
ln -s -b /dev/null /usr/sbin/shipping_mode
mntroot ro

Restore:

mntroot rw
mv /usr/sbin/userstore_reset~ /usr/sbin/userstore_reset
mv /usr/sbin/userstore_clean~ /usr/sbin/userstore_clean
mv /usr/sbin/shipping_mode~ /usr/sbin/shipping_mode
mntroot ro

[mergen3107]

No, this doesn’t save you from OTA (you need renameOTAbin for this). I don’t think it saves you any energy neither.

[mergen3107]

What Kindle do you have?
The ones in your profile description?

[kdusr]

Originally Posted by mergen3107

What Kindle do you have?
The ones in your profile description?

I will run my app on KV, KO and KO2, (my PW5 bricked, boot loop....)

I found some sample code on github for cleanup background process.
https://github.com/mattzzw/kindle-cl...indle-clock.sh

The following process will be killed:
stop lab126_gui
stop otaupd
stop phd
stop tmd
stop todo
stop mcsd
stop x
What is the "x", if the "x" is killed, when my application crashed, can I go back to the terminal?

to re-enable the process , just run: start xxxx, is it right?

[mergen3107]

Yes, with start. Or you can just restart Kindle if it doesn’t work