eventHandler - easy way to run scripts on boot and screensaver on/off events

[knc1]

Originally Posted by Vava

1) Yes, and that's how I want to use it

2) These scripts are called by the eventHandler (that's why I posted a reply instead of create a new thread)

3) Ok, that's what I would like to know. That means there is no chance I succeed to came back from standby mode without an external intervention ?

4) I do not see why it's dangerous. I thought that I was only sending the same command that the system send by pressing the physical button.

2) You are presuming you can create a "resume after delay" event in the system. Different topic.

3) Define your use of the word: "external"
If you mean "external to the software" - the answer is "yes".
If you mean "external to the device" - the answer is "no".

Software requires a computer processor to make use of it.
If you turn off the processor, what is going to execute the software?
Duh....

If you look at the kernel messages associated with the processor resuming operation, you can see that some of the hardware was still running - the messages include how many seconds the processor was shut down.
So there are resources external to the halted processor on the Kindle device.

4) You do not claim that what you post is the limit to what things you may try next.

Since you include powering down the Wifi (one of the things a system suspend does anyway), there is no telling from your post what other strange things you might try.

Hence, a bit of warning that the devices are not indestructible.

[Vava]

I thought the standby mode only lowered the processor power, that's why I was hoping to do it in a "software" way.
You're right about the warning, never useless. Thanks.

[knc1]

Originally Posted by Vava

I thought the standby mode only lowered the processor power, that's why I was hoping to do it in a "software" way.
You're right about the warning, never useless. Thanks.

Read the kernel's dmesg buffer.

There is a KUAL button for that purpose - it copies (and clears) the kernel's ring buffer to a text document that you can view on the Kindle.
Document names are a date-time stamp, so you can keep the messages in order if split between two or more text documents.

[sparta]

I'm trying to get this to work in a K4, but when I selected 'update your kindle' I got the message 'Update was NOT successful' and then after the reboot I'm not seeing a scripts directory in the user partition. (I am new to the Kindle, jailbroken today, but I'm assuming the user partition is what I see when I attach the Kindle to the computer?)

[sparta]

If it's useful: the error code displayed at "Update was NOT successful" was U006.

[knc1]

Originally Posted by sparta

If it's useful: the error code displayed at "Update was NOT successful" was U006.

Try the links indexed under that subject code:
https://wiki.mobileread.com/wiki/K4_Index#Update_Fails

[sparta]

That link for the U006 error message is specific to a different screensaver hack/update. I did try it anyway but to no effect.

[knc1]

Originally Posted by sparta

That link for the U006 error message is specific to a different screensaver hack/update. I did try it anyway but to no effect.

The error codes are specific to the failure encountered not to any hack or update.

U006 is a failure of the system image to match the system manifest.
Which **should not** be checked by installing one of our install *.bin files.

Did you select: "restart" rather than "update" your Kindle? Use: menu -> settings -> menu -> update **ONLY** do not use "restart"

And do you have one of the Amazon system Update-*-.bin files in the user storage?
THAT type of file can fail with error U006.

[NiLuJe]

ERR_UPDATE_FAILED=U006

That's the catchall, fallback error if something unspecific went wrong.

Which, indeed, usually means something in the update script itself returned a non 0 exit code.

Which, given the fact that, according to the OP, this was only tested on a Touch/PW, is potentially expected .

[damaru]

Is there a way to set an event on unmount, when the kindle is disconected from the computer ?

[damaru]

I see that I could modify your code with (I am putting wrong code here, but I am looking for what I would replace it with if it exist):

 mkdir -p /mnt/us/scripts/startup /mnt/us/scripts/suspend /mnt/us/scripts/resume /mnt/us/script/unmount
        
   execute() {
     echo $1
    for file in /mnt/us/scripts/$1/*; do
      if [[ -f "$file" ]]; then
        echo "... $file"
        $file &
      fi
    done
  }    
       
  execute startup
       
  lipc-wait-event -m com.lab126.powerd goingToScreenSaver,outOfScreenSaver,usbunmount | while read event; do
    case "$event" in
      goingToScreenSaver*)
        execute suspend;;
      outOfScreenSaver*)
        execute resume;
        usbUnmount*)
        execute unmount;
   esac
  done;

[sowmya]

When I try to install the Event handler on Paperwhite 2, 'update your kindle' greys out. Can you help me with this?

Firmware version - 5.4.2.1

Thanks,

[kaznelson]

sowmya

Rebuild with KindleTool 1.6.2.20:

[sowmya]

Works just fine! Thank you very much.

[sowmya]

I tried to run a script on start up, so i added a file run.sh in startup folder, but it does not execute it when i reboot the kindle. The homepage shows up. Am I missing something?