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Thread: Open Boot Challenge 2009

  1. #31
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    You can't s3 sleep forever. Everyone has to cold boot eventually and there he must make his stand. BTW, I also hybrid sleep my system when I was on the intel atom board. The idea is, even if I do have to do a full cold boot, i still don't have to wait around. LinuxICE is set to hibernate by default if it can when it gets the power-off signal from the psu.

    The ION doesn't hibernate so well and I haven't tried sleeping yet. Which brings up an interesting point, not all hardware configurations can sleep and/or hibernate. Cold boot is the lowest common denominator and is important to a lot of people.

    Also, I spend literally no time on optimizing boot. LinuxICE get's it's speed as an accidental consequence of only starting stuff that's absolutely needed.
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  2. #32
    And then I was mod. Tidder's Avatar
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    Sure... but if we're talking about real in-use CarPCs, lots of us use S3 all the time.

    You can't park your car forever and not have the stock electronics drain the battery either.
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  3. #33
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    Quote Originally Posted by Tidder View Post
    Sure... but if we're talking about real in-use CarPCs, lots of us use S3 all the time.

    You can't park your car forever and not have the stock electronics drain the battery either.
    Prove me wrong, but I dare say most people don't s3 sleep because they can't. malcom2073, i hope I can use you as an example, can't hibernate or sleep because it does funky things to his monitor. He gets around slow cold boots by remote starting his car before he enters it.
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  4. #34
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    i've left my car for a week with s3 sleep, and battery survived fine.
    and plus with the dsatx and maybe other psu as well, it'll turn off after the set voltage value (mine is set to 12.3V) which is enough to last your car probably a month even after the carpc is off, so any drainage problem is not the fault of the carpc. especially with s3 sleep, if it actually goes power down, it'll start up as hibernate resume anyway. So why is there a need for cold boot.

    not only that, if s3 sleep doesn't work so well, my next step would be hibernate, which is 99% of the time is faster than a cold boot.

    Personally, i haven't cold boot in almost 2 years, the only time i cold boot is when i install new hardware/software that requires restart.

    in the end, cold boot is essentially useless for carpc use, unless you can at least make it faster hibernation for any given hardware. (hard to believe that it is possible)

  5. #35
    And then I was mod. Tidder's Avatar
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    Yup, some people don't have the right hardware to support it. That doesn't sound like a valid reason to not be able to include it though.
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  6. #36
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    I'm another one that uses s3 hybrid sleep (sleep and hibernate together, if PSU cuts power then it resumes from hibernate rather than cold boot up).

    Some Win7 tips that I'll organize and post along with the embedded tips once I get my shizzle together:

    bcdedit /set bootux disabled (blank screen instead of animation)
    bcdedit /set quietboot on (no progress bars, even in resume from hibernate)
    bcdedit /set bootstatuspolicy ignoreallfailures (disable recovery console which is useless in the car, you shouldn't be BSOD'ing out anyhow)

    Not necessarily performance related, but more about having a clean look. In Win7 Embedded you can also have custom images once the GUI starts up rather than the Win7 standard image as it's logging in.
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  7. #37
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    Quote Originally Posted by Punky View Post
    in the end, cold boot is essentially useless for carpc use, unless you can at least make it faster hibernation for any given hardware. (hard to believe that it is possible)
    http://www.mp3car.com/vbulletin/linu...ml#post1349112

    I actually resumed slower than I cold booted on that system. Granted, this is without compression abilities that I have now in LinuxICE.

    @Tidder, why included s3? the difference in time on any given hardware is almost unmeasurable. It's like saying "ZOMG, my 2second resume is 0.14 seconds faster than your resume!" it's pointless and hardware nor software will really change the resume speed in any significant way.
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  8. #38
    And then I was mod. Tidder's Avatar
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    Not true. Without xPort... standby/hibernate is broken for lots of people. I guess what I'm saying is that is an example of software changing the way resume/hiber works.
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  9. #39
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    Quote Originally Posted by SFiorito View Post
    I'm another one that uses s3 hybrid sleep (sleep and hibernate together, if PSU cuts power then it resumes from hibernate rather than cold boot up).

    Some Win7 tips that I'll organize and post along with the embedded tips once I get my shizzle together:

    bcdedit /set bootux disabled (blank screen instead of animation)
    bcdedit /set quietboot on (no progress bars, even in resume from hibernate)
    bcdedit /set bootstatuspolicy ignoreallfailures (disable recovery console which is useless in the car, you shouldn't be BSOD'ing out anyhow)

    Not necessarily performance related, but more about having a clean look. In Win7 Embedded you can also have custom images once the GUI starts up rather than the Win7 standard image as it's logging in.
    Those are some really good tips...that should be stickied somewhere.

    Quote Originally Posted by Tidder View Post
    Not true. Without xPort... standby/hibernate is broken for lots of people. I guess what I'm saying is that is an example of software changing the way resume/hiber works.
    Yea but thats due to hanging on resume...buggy drivers shouldn't have any impact on the speed of an os/hardware configuration. A list of programs/drivers that cause resume to hang could be useful to alot of users but it falls outside the goal of this thread.

  10. #40
    FLAC SFiorito's Avatar
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    Quote Originally Posted by justchat_1 View Post
    Those are some really good tips...that should be stickied somewhere.
    Sticky is now up in the OS/WinNT forum

    Feel free to add more tips as we find them!
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