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Thread: Bluetooth dongle that works

  1. #1
    Join Date
    May 2015
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    140

    Bluetooth dongle that works

    I'm going mental.

    Whenever I leave my computer for 15 minutes, my bluetooth keyboard disconnects and it spends like 30 seconds to reconnect every time

    Why?

    Any dongle that works without this hassle?

  2. #2
    Join Date
    Mar 2011
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    19th Hole
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    Ubuntu 22.04 Jammy Jellyfish

    Re: Bluetooth dongle that works

    1. What flavour and version are you using? Is it Ubuntu 18.04?
    2. Is it a desktop computer using a USB bluetooth dongle?
    3. Do you have auto suspend turned on and set to 15 minutes?
    4. If so, have you tried turning this off?

    The issue is unlikely to be with your dongle, but with the fact that power is being turned off to your USB port after 15 minutes due to auto suspend. Upon resume, it takes 30 seconds for your dongle to reestablish handshake and communication with your keyboard. If you are using a laptop running on battery, turning off auto suspend may not be what you want. In that case, you can try the following methods to keep feeding power to only that one device/USB port:

    https://askubuntu.com/questions/1852...pecific-device
    https://hamwaves.com/usb.autosuspend/en/index.html

    Note that turning off any sort of auto suspend component on a laptop risks rapidly burning up your battery charge and losing data.

  3. #3
    Join Date
    May 2015
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    140

    Re: Bluetooth dongle that works

    1. Ubuntu 18.04
    2. Desktop computer with USB dongle
    3. What is the command to check if this is enabled? I don't believe I have such a feature enabled on a desktop computer that is always on; the monitor goes to sleep, though

  4. #4
    Join Date
    Mar 2011
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    19th Hole
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    Ubuntu 22.04 Jammy Jellyfish

    Re: Bluetooth dongle that works

    Quote Originally Posted by Jason_Hunter View Post
    …I don't believe I have such a feature enabled on a desktop computer that is always on; the monitor goes to sleep, though
    Sometimes, you don't have to have auto-suspend enabled for the system to power down USB ports. I'm not exactly sure why some systems approach USB power management more aggressively than others, but you can try the UDEV solutions I have already linked you to.

  5. #5
    Join Date
    May 2015
    Beans
    140

    Re: Bluetooth dongle that works

    I have:
    cat /sys/bus/usb/devices/5-2/power/control
    on

    , which means:

    The on state means device autosuspend is not allowed

  6. #6
    Join Date
    May 2015
    Beans
    140

    Re: Bluetooth dongle that works

    Jesus, I've had this problem for years, with numerous bluetooth adapters; what is wrong here?

    Can someone just point me to a usb bluetooth dongle that works?

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