如何确定为什么 xprintidle 每 30 秒不断“重置”

Question 1

查看源代码xprintidle（请参阅下文了解我是如何做到这一点的），我们看到：

This program prints the "idle time" of the user to stdout.  The "idle
time" is the number of milliseconds since input was received on any
input device.  If unsuccessful, the program prints a message to stderr
and exits with a non-zero exit code.

因此，我猜想移动鼠标会重置超时。这是有道理的，因为所讨论的超时会导致屏幕变黑/锁定。

进一步查看源代码，可以看到xprintidle使用的功能。（XScreenSaverAllocInfo()、DPMSQueryExtension()等）。阅读man这些功能的页面将为您提供更多详细信息（man XScreenSaverAllocInfo）。

我如何获得源代码来查看：

# Includes several set-up-the-environment steps
mkdir ${HOME}/apt-src  
cd ${HOME}/apt-src
sudo apt-get install apt-src
apt-src install xprintidle
cd xprintidle-0.2/
ls
less xprintidle.c
cd ..
apt-src remove xprintidle

Answer

查看源代码xprintidle（请参阅下文了解我是如何做到这一点的），我们看到：

This program prints the "idle time" of the user to stdout.  The "idle
time" is the number of milliseconds since input was received on any
input device.  If unsuccessful, the program prints a message to stderr
and exits with a non-zero exit code.

因此，我猜想移动鼠标会重置超时。这是有道理的，因为所讨论的超时会导致屏幕变黑/锁定。

进一步查看源代码，可以看到xprintidle使用的功能。（XScreenSaverAllocInfo()、DPMSQueryExtension()等）。阅读man这些功能的页面将为您提供更多详细信息（man XScreenSaverAllocInfo）。

我如何获得源代码来查看：

# Includes several set-up-the-environment steps
mkdir ${HOME}/apt-src  
cd ${HOME}/apt-src
sudo apt-get install apt-src
apt-src install xprintidle
cd xprintidle-0.2/
ls
less xprintidle.c
cd ..
apt-src remove xprintidle

Question 2

就我而言，当虚拟摄像头处于活动状态时，OBS 每隔约 30 秒重置一次空闲计时器。

我编写了一个脚本来忽略 30 秒的循环。这样，即使您无法找出导致周期性空闲重置的原因，您仍然可以根据空闲情况采取行动。

https://github.com/poleguy/sweep/blob/master/check_idle.py

关键逻辑是这样的：

def get_idle_corrected():
    # get idle time, but ignoring any resets that occur at a 30 second period
    # because these are due to obs interrupting the idle to force the screen active
    global idle_last
    global time_start
    time_end  = time.monotonic()
    
    idle = int(subprocess.check_output("xprintidle").decode("utf-8").strip())/1000
    if idle > idle_last:
        # still idle
        pass
    elif idle_last + poll_period - idle > idle_periodic_reset_low and idle_last + poll_period - idle < idle_periodic_reset_high:
        # ignore periodic reset near 30 seconds due to obs
        pass
    else:
        # idle time went down, but not near the expected periodic reset due to obs.
        # so this is reported as a true idle reset
        time_start = time.monotonic() + idle
    idle_last = idle
    print(f'idle {idle}, idle_corrected {time_end - time_start:0.3f}')
    # return the time elapsed since we saw a non-periodic reset of the idle count
    return time_end - time_start

Answer

就我而言，当虚拟摄像头处于活动状态时，OBS 每隔约 30 秒重置一次空闲计时器。

我编写了一个脚本来忽略 30 秒的循环。这样，即使您无法找出导致周期性空闲重置的原因，您仍然可以根据空闲情况采取行动。

https://github.com/poleguy/sweep/blob/master/check_idle.py

关键逻辑是这样的：

def get_idle_corrected():
    # get idle time, but ignoring any resets that occur at a 30 second period
    # because these are due to obs interrupting the idle to force the screen active
    global idle_last
    global time_start
    time_end  = time.monotonic()
    
    idle = int(subprocess.check_output("xprintidle").decode("utf-8").strip())/1000
    if idle > idle_last:
        # still idle
        pass
    elif idle_last + poll_period - idle > idle_periodic_reset_low and idle_last + poll_period - idle < idle_periodic_reset_high:
        # ignore periodic reset near 30 seconds due to obs
        pass
    else:
        # idle time went down, but not near the expected periodic reset due to obs.
        # so this is reported as a true idle reset
        time_start = time.monotonic() + idle
    idle_last = idle
    print(f'idle {idle}, idle_corrected {time_end - time_start:0.3f}')
    # return the time elapsed since we saw a non-periodic reset of the idle count
    return time_end - time_start

如何确定为什么 xprintidle 每 30 秒不断“重置”

答案1

答案2

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