Problem on wake of windows os

My very first impression is, that solving the root cause might be better than trying to 'fake'  activity in order
to work a round an unknown problem.


In order to identify the root cause:
- does the problem occur only after your system enetered standby mode or hybernate mode or does it
   even occur after a certain time (with standby / hibernate disabled)
- try to write the smalles possible program still reproducing above behaviour.


If  what you want to do is to avoid / standby / hibernate while your program is active, then on windows  the call
SetThreadExecutionState() might be what you are looking for.

I never used this call  myself, though I intend to play with in in the next weeks for one of my projects.
http://msdn.microsoft.com/en-us/library/windows/desktop/aa373208%28v=vs.85%29.aspx

I have disabled the hibernation / stand by and it has done it but not as frequently ... I have been searching for the cause for months and Im assuming its some conflict between windows and wxpthon or a glitch in my programming that I cant detect  ... I've been running the error tracing code you shared with me and nothing comes up ...

I see :-(

That's bad.

Did you try to upgrade or downgrade your python / wxPython versions???

If disabling  hibernation / standby doesn't work, then I'm not sure, whether SetThreadExecutionState()
will change anything.

You could still try it.

Not sure, whether I asked this already : Did you look whether you see anything suspicious in the windows event logs?

Just start evenvvwr from a cmd prompt
and walk through the Windows Logs Perhaps some weird message rings a bell.

no I didn't try that.... i will check it and let you know what I find

I double checked and the problem is only when we come out of hibernate or stand by... when we turn it off we haven't had any problems

this is the tread i wrote and Im not sure it works

import os
import sys
import signal
import threading
import ctypes
import win32api
import time

class WindowsNoSleep(threading.Thread):
    def Run(self):
        time.sleep(5)
        SetThreadExecutionState(ctypes.c_int(ES_DISPLAY_REQUIRED|ES_CONTINUOUS|ES_SYSTEM_REQUIRED))
        print SetThreadExecutionState(ctypes.c_int(ES_DISPLAY_REQUIRED|ES_CONTINUOUS|ES_SYSTEM_REQUIRED))

WindowsNoSleep().start() 

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I found this code but I keep getting an error and I thing it's too complicated for my simple program

Traceback (most recent call last):
  File "C:\Python26\sign\windowsnosleep.py", line 38, in <module>
    sys.exit(main()) 
  File "C:\Python26\sign\windowsnosleep.py", line 31, in main
    kernel32.SetThreadExecutionState(ctypes.c_int(ES_CONTINUOUS|ES_SYSTEM_REQUIRED))
ValueError: Procedure called with not enough arguments (4 bytes missing) or wrong calling convention

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I know you havent worked with this code but does anything look suspicious with my code ?

   import sys
import signal
import threading
import ctypes
import win32api
import time

                  
                     
ES_SYSTEM_REQUIRED = 0x00000001
ES_CONTINUOUS = 0x80000000

event = threading.Event()

def ctrlc(signum, frame) :
    event.set()

def main():
    '''
    Prevent system suspend when idle
    '''
    signal.signal(signal.SIGINT, ctrlc)
    kernel32 = ctypes.CDLL('kernel32.dll')
    print kernel32
    time.sleep(500)
    kernel32.SetThreadExecutionState(ctypes.c_int(ES_CONTINUOUS|ES_SYSTEM_REQUIRED))
    event.wait()
    print 'Bye!'

    return 0

if __name__ == '__main__' :
    sys.exit(main())  

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thanks

Is it working?
If not just reply here and I will post the correct call as soon as I had time to try it.