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  1. #1
    Junior Member
    Join Date
    Jun 2019

    USB wifi not detected at boot

    One of my picore devices is placed on my workbench. I always power it down when I'm not using it.

    I noticed that on several occasions, the USB Wifi stick itself is not detected at boot. This happens apparently at random. I can boot ten times without problems and then several times with the stick not being detected. When that happens the blue LED of the stick doesn't glow.

    I already tried another USB-stick and changed the "waitusb" on the bootcodes page from 2 to 5 but it doesn't make any difference.

    Here are two pictures to show what happens at boot:

    USB stick detected
    Name:  detected.jpg
Views: 269
Size:  73.1 KB

    USB stick not detected
    Name:  not-detected.jpg
Views: 261
Size:  114.4 KB

    Anybody any idea as to why this happens?

  2. #2
    Senior Member
    Join Date
    Mar 2008
    I'm afraid that I have no useful advice but can tell you that I see the same thing on a Pi running Max2Play.

    I have a little box I take with me in the car and run from a battery pack. After having boots without connectivity, I tried a different battery pack. That seemed more reliable, but still not perfect. Since the Pi is notorious for WiFi issues, I got one of those little Edimax dongles. Same thing. Sometimes the network comes up, sometimes it doesn't. At least with the dongle I can see whether or not the blue light is blinking.

  3. #3
    Senior Member paul-'s Avatar
    Join Date
    Jan 2013
    There is a command line parameter called waitusb, we default set it to 2 seconds, this is a small delay to let usb devices to get detected. Try to add a few seconds and see if that helps.

    You can change this via the Extras -> Bootcodes menu
    piCorePlayer a small player for the Raspberry Pi in RAM.
    Homepage: https://www.picoreplayer.org

    Please donate if you like the piCorePlayer

  4. #4
    Junior Member
    Join Date
    Jun 2019
    Thank your for the replies.

    @ Atrocity: You confirmed what I was suspecting. So it appears to be yet another Pi-issue.

    I still have a Pi Zero lying around. As soon as I find the time, I'll try that one, to see if the built-in Wifi has to same problem.

    @ Paul-: I already set that parameter to 5 but It doesn't seem to make a difference. I'l try with 10. If it works I will post back, but I don't think it will.
    Last edited by Alverman; 2019-09-23 at 10:16.

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