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Thread: Do USB mice and keyboard get power saved ?

  1. #1
    Join Date
    Nov 2010
    Beans
    7

    Do USB mice and keyboard get power saved ?

    Trying Ubuntu 21.10 server on a Raspberry Pi 3B+, installing xubuntu-desktop on the server.
    I've tried 64 and 32 bit images - both behave the same. Using a USB keyboard and a USB
    mouse (Microsoft Optical). They both work fine when running Raspbian on the Pi.

    On Ubuntu, after some minutes of inactivity, the mouse buttons cease to work..The pointer works
    fine, just the buttons pack up. If I unplug the mouse and then plug it in again, the buttons
    still don't work.
    I can do a "systemctl restart lightdm" to get the mouse working, but again after inactivity the
    buttons pack up.

    Xorg.0.log is interesting. Something removes the mouse and keyboard devices - no idea what,
    it isn't done by the user: Makes me wonder if it's some power saving mechanism ?

    [ 40.688] (II) config/udev: Adding input device Microsoft Microsoft 3-Button Mouse with IntelliEye(TM) (/dev/input/event0)
    [ 40.688] (**) Microsoft Microsoft 3-Button Mouse with IntelliEye(TM): Applying InputClass "libinput pointer catchall"
    [ 40.688] (II) Using input driver 'libinput' for 'Microsoft Microsoft 3-Button Mouse with IntelliEye(TM)'
    [ 40.688] (**) Microsoft Microsoft 3-Button Mouse with IntelliEye(TM): always reports core events
    [ 40.688] (**) Option "Device" "/dev/input/event0"
    [ 40.689] (**) Option "_source" "server/udev"
    [ 40.765] (II) event0 - Microsoft Microsoft 3-Button Mouse with IntelliEye(TM): is tagged by udev as: Mouse
    [ 40.766] (II) event0 - Microsoft Microsoft 3-Button Mouse with IntelliEye(TM): device is a pointer
    [ 40.769] (II) event0 - Microsoft Microsoft 3-Button Mouse with IntelliEye(TM): device removed
    [ 40.809] (**) Option "config_info" "udev:/sys/devices/platform/soc/3f980000.usb/usb1/1-1/1-1.2/1-1.2:1.0/0003:045E:0040.0001/input/input0/event0"
    [ 40.809] (II) XINPUT: Adding extended input device "Microsoft Microsoft 3-Button Mouse with IntelliEye(TM)" (type: MOUSE, id 7)
    [ 40.810] (**) Option "AccelerationScheme" "none"
    [ 40.810] (**) Microsoft Microsoft 3-Button Mouse with IntelliEye(TM): (accel) selected scheme none/0
    [ 40.810] (**) Microsoft Microsoft 3-Button Mouse with IntelliEye(TM): (accel) acceleration factor: 2.000
    [ 40.810] (**) Microsoft Microsoft 3-Button Mouse with IntelliEye(TM): (accel) acceleration threshold: 4
    [ 40.875] (II) event0 - Microsoft Microsoft 3-Button Mouse with IntelliEye(TM): is tagged by udev as: Mouse
    [ 40.891] (II) event0 - Microsoft Microsoft 3-Button Mouse with IntelliEye(TM): device is a pointer
    [ 40.896] (II) config/udev: Adding input device Microsoft Microsoft 3-Button Mouse with IntelliEye(TM) (/dev/input/mouse0)
    [ 40.897] (II) No input driver specified, ignoring this device.
    [ 40.897] (II) This device may have been added with another device file.
    [ 1214.535] (II) event1 - Dell Dell Smart Card Reader Keyboard: device removed
    [ 1214.554] (II) event0 - Microsoft Microsoft 3-Button Mouse with IntelliEye(TM): device removed

  2. #2
    Join Date
    Nov 2010
    Beans
    7

    Re: Do USB mice and keyboard get power saved ?

    Ah, it's something in xubuntu-desktop.
    I removed xubuntu-desktop, installed lubuntu-desktop and all is well. Been running for over 12 hours and no "device removed" entries in Xorg.0.log

  3. #3
    Join Date
    Nov 2009
    Beans
    Hidden!
    Distro
    Kubuntu 18.04 Bionic Beaver

    Re: Do USB mice and keyboard get power saved ?

    also, just for information, some mice and keyboards have a chip that saves certain settings. for example DPI, illumination, as well as some other settings.
    Read the easy to understand, lots of pics Ubuntu manual.
    Do i need antivirus/firewall in linux?
    Full disk backup (newer kernel -> suitable for newer PC): Clonezilla
    User friendly full disk backup: Rescuezilla

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