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Thread: What timings do you use/wish there were for M2-atx?

  1. #11
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    Quote Originally Posted by Guswut View Post
    You are correct. Hibernate mode uses no power as the RAM does not need to be powered on as the state is saved to non-volatile memory (the hard disk).
    Quote Originally Posted by packruler View Post
    If I'm not mistaken if your computer is in full hibernate mode it should not use any power since all the ram is save to your hard disk and booted from there.
    Quote Originally Posted by ACCLR8N View Post
    Coming out of hibernate, the computer has to boot up. Whatever you had in RAM is reloaded from the hard drive. You save a couple seconds of re-opening files and loading hardware only. I want standby where the computer is already booted with my MDX and RR ready and waiting.
    Thank you all for the clarification. It seems that the 5V standby is not needed for hibernate, but is needed for standby and sleep.

  2. #12
    Low Bitrate Belo's Avatar
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    sorry if this is off-topic, but I am assembling my carputer and have no real world experience, so the answer to my following question will effect how I answer the topic question.

    Can someone point me to, or explain how exactly the off dealy and hard off work. For example, if i have a off-delay of 30 minutes I can stop, get gas and not have my carputer power off correct?

    If i have an off delay of 10 seconds, and hard off of 30 minutes and I get out pump gas and then turn the car back on am I booting from hibernate because I've surpassed off-delay? What exactly is the 5v doing and why would I want to keep it on when turning off my car?

    What happens when I turn the car on and have surpassed both off-delay and hard off?

    Finally if I have turned off the car and have a 30 minute off delay setting, and my computer is still running; I'm assuming my music is also still playing? So i get back in the car and I'm now on track 12 when I stopped my car to pump gas on track 10?

    Again not trying to thread jack, you can pm the answer if you'd like and delete my post.
    09 Pontiac G8GT [decently modded]
    former carputer owner, given up for iphone

  3. #13
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    Quote Originally Posted by Belo View Post
    sorry if this is off-topic, but I am assembling my carputer and have no real world experience, so the answer to my following question will effect how I answer the topic question.

    Can someone point me to, or explain how exactly the off dealy and hard off work. For example, if i have a off-delay of 30 minutes I can stop, get gas and not have my carputer power off correct?

    If i have an off delay of 10 seconds, and hard off of 30 minutes and I get out pump gas and then turn the car back on am I booting from hibernate because I've surpassed off-delay? What exactly is the 5v doing and why would I want to keep it on when turning off my car?

    What happens when I turn the car on and have surpassed both off-delay and hard off?

    Finally if I have turned off the car and have a 30 minute off delay setting, and my computer is still running; I'm assuming my music is also still playing? So i get back in the car and I'm now on track 12 when I stopped my car to pump gas on track 10?

    Again not trying to thread jack, you can pm the answer if you'd like and delete my post.
    The off-delay is a timer that counts from when the psu detects that you turned the ignition off to when it sends a simulated button press to the motherboard to turn the pc off. So, if you have an off-delay of 30 minutes, you can turn your car off and the psu will not tell the computer to turn off until 30 minutes later. By your example, you will now be on track 12 because the computer has no idea it is in a car. It just continues to do whatever you told it to do.

    The hard-off delay is a timer between when the psu removes power from the main power rails (5V, 12V 3.3V) after the pc shuts down and when the psu removes power from the 5V standby rail. Normally, ATX power supplies always supply 5V standby power to the motherboard when they are plugged in (and the rocker switch on the psu is on). Because this application gets its power from a car battery, most car psu's have the ability to turn off the 5V standby rail to minimize power consumption.

    As far as I know, the only reason you would need the 5V standby to remain on is if you want to use standby or sleep modes, which require the 5V standby power to power the RAM. Otherwise, I am not sure why you would want the 5V standby power to remain on for long periods of time. Perhaps someone who has a use can chime in???

    If you have surpassed the hard-off timer and you turn your car on, the psu first turns on the 5V standby rail, then sends a simulated button press to the motherboard and then powers up as normal... either from hibernate if you use that or from cold boot if you dont.

  4. #14
    Low Bitrate Belo's Avatar
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    Quote Originally Posted by bluTDI09 View Post
    The off-delay is a timer that counts from when the psu detects that you turned the ignition off to when it sends a simulated button press to the motherboard to turn the pc off. So, if you have an off-delay of 30 minutes, you can turn your car off and the psu will not tell the computer to turn off until 30 minutes later. By your example, you will now be on track 12 because the computer has no idea it is in a car. It just continues to do whatever you told it to do.

    The hard-off delay is a timer between when the psu removes power from the main power rails (5V, 12V 3.3V) after the pc shuts down and when the psu removes power from the 5V standby rail. Normally, ATX power supplies always supply 5V standby power to the motherboard when they are plugged in (and the rocker switch on the psu is on). Because this application gets its power from a car battery, most car psu's have the ability to turn off the 5V standby rail to minimize power consumption.

    As far as I know, the only reason you would need the 5V standby to remain on is if you want to use standby or sleep modes, which require the 5V standby power to power the RAM. Otherwise, I am not sure why you would want the 5V standby power to remain on for long periods of time. Perhaps someone who has a use can chime in???

    If you have surpassed the hard-off timer and you turn your car on, the psu first turns on the 5V standby rail, then sends a simulated button press to the motherboard and then powers up as normal... either from hibernate if you use that or from cold boot if you dont.
    cool man. good info and you've clarified it for me. I know there is a sleep mode option in windows, but I wonder how you would set it up to sleep and hibernate...
    09 Pontiac G8GT [decently modded]
    former carputer owner, given up for iphone

  5. #15
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    Quote Originally Posted by Belo View Post
    cool man. good info and you've clarified it for me. I know there is a sleep mode option in windows, but I wonder how you would set it up to sleep and hibernate...
    Glad I could help. I can't tell you how to set up sleep or hibernate in windows, but I can tell you that what you want to configure is the behavior of the operating system on a power button press. For example, you can tell it "when you see a power button press, go into sleep mode" or "when you see a power button press, go into hibernate." The power supply does not know what the computer will do when it presses the power button so the jumpers must be set for the appropriate situation that is configured in the OS.

    But back on topic a bit... What power mode are you interested in using and what timings do you imagine would be best? Sleep/standby with hard-off NEVER? Or hibernate with hard-off 1min? How about offdelay timing?

  6. #16
    Low Bitrate Belo's Avatar
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    I need to test my system in the real world more, but I'd say 1/2 hour delay and 1 hour hard off...
    09 Pontiac G8GT [decently modded]
    former carputer owner, given up for iphone

  7. #17
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    OK, based on some good input in the main thread about my firmware, I am looking into making the battery threshold voltage adjustable with the jumpers to try and be more effective at preventing situations where the battery is too low. In order to do that, I have to decrease the potential number of timing options... So I have a couple of questions for everyone:

    If you use standby or sleep, you need 5V standby to stay on for long periods of time... Are there any situations where you would need the 5V standby on if you are not using standby mode in the OS? In other words, is there any reason to have a hard-off time other than 1 minute (for hibernate or shut down) or NEVER (for standby)?

    Some people like to leave their pc on while they run into the gas station or store or something... Other people want it to shut down when they turn the car off. Is there any reason to have an off-delay other than 5 seconds (if you shut down immediately) or 15 minutes (if you want to run into the store)?

    Is there any reason to have an amp-delay other than 10 seconds? Does the thump occur when power is put to the motherboard or when something happens when loading the OS?

    Is there any reason to have an autolatch other than 60 seconds? If your computer boots faster than that, is it inconvenient to have it stay on for a few more seconds if you turn your car off quickly?

    Any input you can give me would greatly be appreciated!

  8. #18
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    Quote Originally Posted by bluTDI09 View Post
    hard-off time other than 1 minute (for hibernate or shut down) or NEVER (for standby)?
    That sounds like a pretty good plan, maybe put hard off to 2 minute instead, because some computer take a long time to go to sleep. 2 minute wouldn't put any strain on the battery especially when most computer is already as sleep by 30 seconds anyway.

  9. #19
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    Quote Originally Posted by Punky View Post
    That sounds like a pretty good plan, maybe put hard off to 2 minute instead, because some computer take a long time to go to sleep. 2 minute wouldn't put any strain on the battery especially when most computer is already as sleep by 30 seconds anyway.
    You mean some computers take a long time to hibernate? Sleep mode requires hard-off NEVER I believe. Or do you mean that the psu should give 2 minutes between the time when the power button is pressed and when it expects the computer to be asleep or hibernated or shut down? Thank you for the response!

  10. #20
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    oops i mean hibernate

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