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Thread: Fast Boot: USB devices impact on BIOS post times

  1. #1
    Mod - iPad Forums RipplingHurst's Avatar
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    Fast Boot: USB devices impact on BIOS post times

    Hi,

    Not sure how general the following findings are, but I'll post them anyway.

    If you're not much into reading, my conclusion is that BIOS times depend much more on how they recognize and interact with the devices you plug into your computer. My DG45FC went from 10.3 sec to 21.1 sec depending on what was plugged.

    Basically, Bios post times can be improved by tweaking a lot of obscure settings, but you won't get much more than a second out of it, specially if it's tweaked somewhat already (eg. if you're not using the internal com port, disable it, etc.).

    Now the number and the type of USB devices account for much more than any single bios setting. At least that's what I found out by plugging each of my devices one by one. Some USB devices are hideous as far as boot times are concerned, specially HID devices (keyboards, mouses, etc.). Now I didn't test USB dongles, so this is far from complete. USB Hubs (I use only one, powered one) can also be very dangerous from my previous experience, but I didn't test those either.

    Here we go:

    CASE 1: MB and a wireless logitech mouse and the touchscreen plugged. Nothing else (I did this 3 times, with similar results +-2s):

    A) 9.6
    B) 20.7
    C) 3.5s
    T=33.8s

    Another: A) 9.1;B)21.7;C)3.9;T=34.7; in all 3, BIOS times under 10sec.

    In what follows, I adopt the convention below:

    A = Bios boot time; from flip of the switch to the beep
    B = Windows 7 32bits boot time from the beep up to when the desktop is painted
    C = Windows 7 is "ready" meaning and no "busy" cursor is seen, all the taskbar and desktop icons are loaded, etc.
    T = Total time A+B+C.

    CASE 2: Add a wired USB MS Desktop keyboard

    A) 10.3
    B) 22.5
    c) 4
    t) 36.8

    Case 3: add the JoyCon (steeering wheel HID interface), wired USB

    A) 15.2
    B) 22.3
    C) 3.5
    T) 41.2

    Wow. Tested again, BIOS times 15.0-15.3 range. 5 seconds more! Unpluged, restarted, shut off, flip the switch, timed it again, back to 10.2 sec. range. But I need this stuff, so lets go on.

    CASE 4: Add Webcam (Logitech QuickCam 9000)
    A) 17.4
    B) 21.1
    C) 4.5
    T=43.1

    This added 2.2 sec. BUT this is where my only USB hub is (the webcam consumes lots of power, and it's a long way from the computer to the dash so it's powered). It's powered by one of the mp3car store 5v PSUs. So not sure if this is due to the Camera, and how far it's due to the 4 port Kingston usb hub.

    Not happy. Again, I need that cam. So it stays. Maybe another hub? I had another one, but it didn't behave well on hibernation. We'd need a thread listing good hubs...

    CASE 5: Add Garmin GPS

    A) 17.7
    B) 20.9
    C) 3.7
    T=42.5

    Surprise, that was fast! Only added 3/10ths. Tested again, same results.

    CASE 6: Add Wireless G USB dongle (Belkin, very bad stuff).

    A) 17.9
    B) 21.6
    C) 3.1
    T=42.7

    CASE 7: Another HID device, Wireless USB keyboard (Logitech DiNovo)

    A) 20.5 (WTF?!)
    B) 19.2
    C) 3.2
    T=43.1

    Again, another keyboard, 2.6 seconds added. 2.6 seconds...Consistently. What's up with Intel bios and HID devices?

    CASE 8) Motorola wired USB 3G modem (Motorola V3xx dedicated to the car)

    A) 20.5
    B) 19.2
    C) 4.0
    T=43.7

    CASE 9) Bluetooth dongle

    A) 20.7
    B) 23.7
    C) 2.6
    t= 47.2

    Odd numbers for the win7 time in this case. Tested it again:

    A) 20.5
    B) 21.0
    C) 3.3
    t= 44.8

    CASE 10) Now I DISconnected the DiNovo keyboard again (Not sure I use it that much, then again I'm going to hibernate, so just to see what happens)

    A) 18.3
    B) 21.1
    C) 3.6
    T=43.0

    Now it's 2.2 seconds difference. Tested again, got 18.5 BIOS boot time. 2 seconds. Down to a keyboard...

    So that's it. Hope this helps somewhat. It would be interesting if that's an Intel thing, or other bios have trouble with some devices.

    What do you guys think?

    Cheers,

    RH.

  2. #2
    FLAC
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    Yup, I find that some USB devices definately increase the time for the BIOS to POST. But I dont think there is much you can do about it other than to tweak some BIOS settings. Or even worse, soemtimes they make resuming from hibernation unstable.

  3. #3
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    Quote Originally Posted by RipplingHurst View Post
    CASE 4: Add Webcam (Logitech QuickCam 9000)
    A) 17.4
    B) 21.1
    C) 4.5
    T=43.1

    ...

    CASE 5: Add Garmin GPS

    A) 17.7
    B) 20.9
    C) 3.7
    T=42.5
    So the Garmin GPS sped up the overall boot time!? I'm going to look into buying one of those...
    '93 Toyota Celica - First Car PC install
    Current System Specs:
    ZOTAC GF8200-C-E AM2+ GF8200
    AMD Athlon 64 X2 3800+
    1 GB DDR2 667
    LITE-ON DL-8ATS Slot-Load
    750 GB Seagate SATA HDD
    250W PSU
    19" Hyundai Monitor

  4. #4
    Mod - iPad Forums RipplingHurst's Avatar
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    Quote Originally Posted by cjrokke View Post
    So the Garmin GPS sped up the overall boot time!? I'm going to look into buying one of those...
    It increased bios boot times though. One can never know what optimizations windows are doing in the background, completely unrelated to Garmin drivers.

  5. #5
    FLAC
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    Here is my experience with this board, very basic setup, SSD, GPS, Touchscreen, USB sound card, and these are my settings:

    Intel D945GLF2 Optimization

  6. #6
    FLAC WuNgUn's Avatar
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    Sometimes it matters which port you plug a device into as well! I have a device, when used on a certain port, causes the POST USB detection to hang for 5 or 6 extra seconds...

  7. #7
    Maximum Bitrate bratnetwork's Avatar
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    I have this board and i agree the bios boot times are hideous. Mine has an extra lag that i can't seem to get rid of b/c i dont keep a keyboard plugged. When it boots it goes to the no keyboard screen and hangs there a bit... so annoying. It doesn't require to hit a key to continue but it hangs there for a while and there is no setting that I have found in the BIOS to eliminate this. Once up and running this board is great, but booting it sucks.

  8. #8
    Mod - iPad Forums RipplingHurst's Avatar
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    Quote Originally Posted by WuNgUn View Post
    Sometimes it matters which port you plug a device into as well! I have a device, when used on a certain port, causes the POST USB detection to hang for 5 or 6 extra seconds...
    Interesting, I'm going do some testing with my worst offenders, the HID devices.

    Quote Originally Posted by bratnetwork View Post
    I have this board and i agree the bios boot times are hideous. Mine has an extra lag that i can't seem to get rid of b/c i dont keep a keyboard plugged. When it boots it goes to the no keyboard screen and hangs there a bit... so annoying. It doesn't require to hit a key to continue but it hangs there for a while and there is no setting that I have found in the BIOS to eliminate this. Once up and running this board is great, but booting it sucks.

    Have you tried bios 117 from Sept 2009?

    Fixed issue with POST code 51 when using certain wireless
    keyboard.
    Quote Originally Posted by Punky View Post
    Here is my experience with this board, very basic setup, SSD, GPS, Touchscreen, USB sound card, and these are my settings:

    Intel D945GLF2 Optimization
    I did all that already, minus the LAN, because I plug into my wired network when I'm updating it/tinkering with it (like every weekend).

  9. #9
    FLAC
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    your HD?

  10. #10
    Mod - iPad Forums RipplingHurst's Avatar
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    My HD is a Kingston SSD 64 GB + 500GB Samsung 2.5" drive.

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