Public bug reported:
I recently got an Apple's Magic Trackpad. I paired it with Ubuntu
18.04.2 LTS and worked out of the box, no special drivers needed.
However, I experience frequent disconnections that last a few seconds
(5-15 seconds usually), which are quite annoying, as the cursor stops
responding during that interval. The trackpad connects by itself after
that period. That usually happens every 20-40 minutes.
I use the onboard bluetooth device of my laptop. I also have, at the
same time, two more bluetooth devices (keyboard and mouse) and they do
not experience that issue, just the trackpad. On ocassion I use
bluetooth headphones which work just fine.
First of all:
Using the command `bluetoothctl` I get the following every time I
experience a disconnection:
`[CHG] Device F4:1B:A1:33:F9:8D Connected: no
[CHG] Device F4:1B:A1:33:F9:8D Connected: yes`
Checking `dmesg` I can see more information: (if I am not mistaken, this
shows 4 disconnections)
`
[ 1609.070538] magicmouse 0005:05AC:030E.0007: unknown main item tag 0x0
[ 1609.070797] input: Apple Wireless Trackpad as
/devices/pci0000:00/0000:00:14.0/usb1/1-7/1-7:1.0/bluetooth/hci0/hci0:256/0005:05AC:030E.0007/input/input23
[ 1609.071460] magicmouse 0005:05AC:030E.0007: input,hidraw1: BLUETOOTH HID
v1.60 Mouse [Apple Wireless Trackpad] on 64:5d:86:86:3f:98
[ 1676.917377] NET: Registered protocol family 38
[ 1872.815348] magicmouse 0005:05AC:030E.0008: unknown main item tag 0x0
[ 1872.815559] input: Apple Wireless Trackpad as
/devices/pci0000:00/0000:00:14.0/usb1/1-7/1-7:1.0/bluetooth/hci0/hci0:256/0005:05AC:030E.0008/input/input24
[ 1872.816248] magicmouse 0005:05AC:030E.0008: input,hidraw1: BLUETOOTH HID
v1.60 Mouse [Apple Wireless Trackpad] on 64:5d:86:86:3f:98
[ 3101.682671] magicmouse 0005:05AC:030E.0009: unknown main item tag 0x0
[ 3101.683100] input: Apple Wireless Trackpad as
/devices/pci0000:00/0000:00:14.0/usb1/1-7/1-7:1.0/bluetooth/hci0/hci0:256/0005:05AC:030E.0009/input/input25
[ 3101.683673] magicmouse 0005:05AC:030E.0009: input,hidraw1: BLUETOOTH HID
v1.60 Mouse [Apple Wireless Trackpad] on 64:5d:86:86:3f:98
[ 3110.683360] magicmouse 0005:05AC:030E.000A: unknown main item tag 0x0
[ 3110.683929] input: Apple Wireless Trackpad as
/devices/pci0000:00/0000:00:14.0/usb1/1-7/1-7:1.0/bluetooth/hci0/hci0:1024/0005:05AC:030E.000A/input/input26
[ 3110.684487] magicmouse 0005:05AC:030E.000A: input,hidraw1: BLUETOOTH HID
v1.60 Mouse [Apple Wireless Trackpad] on 64:5d:86:86:3f:98
`
And this is what journalctl -b shows at the moment of the
disconnection/reconnection:
`de juny 13 21:37:49 TM1703 /usr/lib/gdm3/gdm-x-session[4882]: (II)
config/udev: removing device Apple Wireless Trackpad
de juny 13 21:37:49 TM1703 /usr/lib/gdm3/gdm-x-session[4882]: (**) Option "fd"
"64" (1,63 m)˜
de juny 13 21:37:49 TM1703 /usr/lib/gdm3/gdm-x-session[4882]: (II) event16 -
Apple Wireless Trackpad: device removed
de juny 13 21:37:49 TM1703 gnome-shell[5071]: g_array_unref: assertion 'array'
failed
de juny 13 21:37:49 TM1703 /usr/lib/gdm3/gdm-x-session[4882]: (II)
UnloadModule: "libinput"
de juny 13 21:37:49 TM1703 /usr/lib/gdm3/gdm-x-session[4882]: (II)
systemd-logind: releasing fd for 13:80
de juny 13 21:37:49 TM1703 upowerd[1271]: unhandled action 'unbind' on
/sys/devices/pci0000:00/0000:00:14.0/usb1/1-7/1-7:1.0/bluetooth/hci0/hci0:256/0005:05AC:030E.0008
de juny 13 21:37:50 TM1703 kernel: magicmouse 0005:05AC:030E.0009: unknown main
item tag 0x0
de juny 13 21:37:50 TM1703 kernel: input: Apple Wireless Trackpad as
/devices/pci0000:00/0000:00:14.0/usb1/1-7/1-7:1.0/bluetooth/hci0/hci0:256/0005:05AC:030E.0009/input/input25
de juny 13 21:37:50 TM1703 kernel: magicmouse 0005:05AC:030E.0009:
input,hidraw1: BLUETOOTH HID v1.60 Mouse [Apple Wireless Trackpad] on
64:5d:86:86:3f:98
de juny 13 21:37:50 TM1703 /usr/lib/gdm3/gdm-x-session[4882]: (II) config/udev:
Adding input device Apple Wireless Trackpad (/dev/input/mouse1)
de juny 13 21:37:50 TM1703 /usr/lib/gdm3/gdm-x-session[4882]: (II) No input
driver specified, ignoring this device.
de juny 13 21:37:50 TM1703 /usr/lib/gdm3/gdm-x-session[4882]: (II) This device
may have been added with another device file.
de juny 13 21:37:50 TM1703 /usr/lib/gdm3/gdm-x-session[4882]: (II) config/udev:
Adding input device Apple Wireless Trackpad (/dev/input/event16)
de juny 13 21:37:50 TM1703 /usr/lib/gdm3/gdm-x-session[4882]: (**) Apple
Wireless Trackpad: Applying InputClass "libinput touchpad catchall"
de juny 13 21:37:50 TM1703 /usr/lib/gdm3/gdm-x-session[4882]: (II) Using input
driver 'libinput' for 'Apple Wireless Trackpad'
de juny 13 21:37:50 TM1703 upowerd[1271]: unhandled action 'bind' on
/sys/devices/pci0000:00/0000:00:14.0/usb1/1-7/1-7:1.0/bluetooth/hci0/hci0:256/0005:05AC:030E.0009
de juny 13 21:37:50 TM1703 /usr/lib/gdm3/gdm-x-session[4882]: (II)
systemd-logind: got fd for /dev/input/event16 13:80 fd 65 paused 0
de juny 13 21:37:50 TM1703 /usr/lib/gdm3/gdm-x-session[4882]: (**) Apple
Wireless Trackpad: always reports core events
de juny 13 21:37:50 TM1703 /usr/lib/gdm3/gdm-x-session[4882]: (**) Option
"Device" "/dev/input/event16" (40,64 cm)˜
de juny 13 21:37:50 TM1703 /usr/lib/gdm3/gdm-x-session[4882]: (**) Option
"_source" "server/udev"
de juny 13 21:37:50 TM1703 /usr/lib/gdm3/gdm-x-session[4882]: (II) event16 -
Apple Wireless Trackpad: is tagged by udev as: Touchpad
de juny 13 21:37:50 TM1703 /usr/lib/gdm3/gdm-x-session[4882]: (II) event16 -
Apple Wireless Trackpad: device is a touchpad
de juny 13 21:37:50 TM1703 /usr/lib/gdm3/gdm-x-session[4882]: (II) event16 -
Apple Wireless Trackpad: device removed
de juny 13 21:37:50 TM1703 /usr/lib/gdm3/gdm-x-session[4882]: (**) Option
"config_info"
"udev:/sys/devices/pci0000:00/0000:00:14.0/usb1/1-7/1-7:1.0/bluetooth/hci0/hci0:256/0005:05AC:030E.0009/input/i
de juny 13 21:37:50 TM1703 /usr/lib/gdm3/gdm-x-session[4882]: (II) XINPUT:
Adding extended input device "Apple Wireless Trackpad" (type: TOUCHPAD, id 11)
de juny 13 21:37:50 TM1703 /usr/lib/gdm3/gdm-x-session[4882]: (**) Option
"AccelerationScheme" "none"
de juny 13 21:37:50 TM1703 /usr/lib/gdm3/gdm-x-session[4882]: (**) Apple
Wireless Trackpad: (accel) selected scheme none/0
de juny 13 21:37:50 TM1703 /usr/lib/gdm3/gdm-x-session[4882]: (**) Apple
Wireless Trackpad: (accel) acceleration factor: 2.000
de juny 13 21:37:50 TM1703 /usr/lib/gdm3/gdm-x-session[4882]: (**) Apple
Wireless Trackpad: (accel) acceleration threshold: 4
de juny 13 21:37:50 TM1703 /usr/lib/gdm3/gdm-x-session[4882]: (II) event16 -
Apple Wireless Trackpad: is tagged by udev as: Touchpad
de juny 13 21:37:50 TM1703 /usr/lib/gdm3/gdm-x-session[4882]: (II) event16 -
Apple Wireless Trackpad: device is a touchpad
de juny 13 21:37:51 TM1703 upowerd[1271]: treating change event as add on
/sys/devices/pci0000:00/0000:00:14.0/usb1/1-7/1-7:1.0/bluetooth/hci0/hci0:256/0005:05AC:030E.0009/power_supply/hid-f4:1b:a1:3
de juny 13 21:37:59 TM1703 /usr/lib/gdm3/gdm-x-session[4882]: (II) config/udev:
removing device Apple Wireless Trackpad
de juny 13 21:37:59 TM1703 /usr/lib/gdm3/gdm-x-session[4882]: (**) Option "fd"
"65" (1,65 m)˜
de juny 13 21:37:59 TM1703 /usr/lib/gdm3/gdm-x-session[4882]: (II) event16 -
Apple Wireless Trackpad: device removed
de juny 13 21:37:59 TM1703 /usr/lib/gdm3/gdm-x-session[4882]: (II)
UnloadModule: "libinput"
de juny 13 21:37:59 TM1703 /usr/lib/gdm3/gdm-x-session[4882]: (II)
systemd-logind: releasing fd for 13:80
de juny 13 21:37:59 TM1703 gnome-shell[5071]: g_array_unref: assertion 'array'
failed
de juny 13 21:37:59 TM1703 upowerd[1271]: unhandled action 'unbind' on
/sys/devices/pci0000:00/0000:00:14.0/usb1/1-7/1-7:1.0/bluetooth/hci0/hci0:256/0005:05AC:030E.0009
de juny 13 21:37:59 TM1703 kernel: magicmouse 0005:05AC:030E.000A: unknown main
item tag 0x0
de juny 13 21:37:59 TM1703 kernel: input: Apple Wireless Trackpad as
/devices/pci0000:00/0000:00:14.0/usb1/1-7/1-7:1.0/bluetooth/hci0/hci0:1024/0005:05AC:030E.000A/input/input26
de juny 13 21:37:59 TM1703 kernel: magicmouse 0005:05AC:030E.000A:
input,hidraw1: BLUETOOTH HID v1.60 Mouse [Apple Wireless Trackpad] on
64:5d:86:86:3f:98
de juny 13 21:37:59 TM1703 /usr/lib/gdm3/gdm-x-session[4882]: (II) config/udev:
Adding input device Apple Wireless Trackpad (/dev/input/mouse1)
de juny 13 21:37:59 TM1703 /usr/lib/gdm3/gdm-x-session[4882]: (II) No input
driver specified, ignoring this device.
de juny 13 21:37:59 TM1703 /usr/lib/gdm3/gdm-x-session[4882]: (II) This device
may have been added with another device file.
de juny 13 21:37:59 TM1703 /usr/lib/gdm3/gdm-x-session[4882]: (II) config/udev:
Adding input device Apple Wireless Trackpad (/dev/input/event16)
de juny 13 21:37:59 TM1703 /usr/lib/gdm3/gdm-x-session[4882]: (**) Apple
Wireless Trackpad: Applying InputClass "libinput touchpad catchall"
de juny 13 21:37:59 TM1703 /usr/lib/gdm3/gdm-x-session[4882]: (II) Using input
driver 'libinput' for 'Apple Wireless Trackpad'
de juny 13 21:37:59 TM1703 /usr/lib/gdm3/gdm-x-session[4882]: (II)
systemd-logind: got fd for /dev/input/event16 13:80 fd 65 paused 0
de juny 13 21:37:59 TM1703 /usr/lib/gdm3/gdm-x-session[4882]: (**) Apple
Wireless Trackpad: always reports core events
de juny 13 21:37:59 TM1703 /usr/lib/gdm3/gdm-x-session[4882]: (**) Option
"Device" "/dev/input/event16" (40,64 cm)˜
de juny 13 21:37:59 TM1703 /usr/lib/gdm3/gdm-x-session[4882]: (**) Option
"_source" "server/udev"
de juny 13 21:37:59 TM1703 /usr/lib/gdm3/gdm-x-session[4882]: (II) event16 -
Apple Wireless Trackpad: is tagged by udev as: Touchpad
de juny 13 21:37:59 TM1703 /usr/lib/gdm3/gdm-x-session[4882]: (II) event16 -
Apple Wireless Trackpad: device is a touchpad
de juny 13 21:37:59 TM1703 /usr/lib/gdm3/gdm-x-session[4882]: (II) event16 -
Apple Wireless Trackpad: device removed
de juny 13 21:37:59 TM1703 /usr/lib/gdm3/gdm-x-session[4882]: (**) Option
"config_info"
"udev:/sys/devices/pci0000:00/0000:00:14.0/usb1/1-7/1-7:1.0/bluetooth/hci0/hci0:1024/0005:05AC:030E.000A/input/
de juny 13 21:37:59 TM1703 /usr/lib/gdm3/gdm-x-session[4882]: (II) XINPUT:
Adding extended input device "Apple Wireless Trackpad" (type: TOUCHPAD, id 11)
de juny 13 21:37:59 TM1703 /usr/lib/gdm3/gdm-x-session[4882]: (**) Option
"AccelerationScheme" "none"
de juny 13 21:37:59 TM1703 /usr/lib/gdm3/gdm-x-session[4882]: (**) Apple
Wireless Trackpad: (accel) selected scheme none/0
de juny 13 21:37:59 TM1703 /usr/lib/gdm3/gdm-x-session[4882]: (**) Apple
Wireless Trackpad: (accel) acceleration factor: 2.000
de juny 13 21:37:59 TM1703 /usr/lib/gdm3/gdm-x-session[4882]: (**) Apple
Wireless Trackpad: (accel) acceleration threshold: 4
de juny 13 21:37:59 TM1703 /usr/lib/gdm3/gdm-x-session[4882]: (II) event16 -
Apple Wireless Trackpad: is tagged by udev as: Touchpad
de juny 13 21:37:59 TM1703 /usr/lib/gdm3/gdm-x-session[4882]: (II) event16 -
Apple Wireless Trackpad: device is a touchpad
de juny 13 21:37:59 TM1703 upowerd[1271]: unhandled action 'bind' on
/sys/devices/pci0000:00/0000:00:14.0/usb1/1-7/1-7:1.0/bluetooth/hci0/hci0:1024/0005:05AC:030E.000A
de juny 13 21:38:00 TM1703 upowerd[1271]: treating change event as add on
/sys/devices/pci0000:00/0000:00:14.0/usb1/1-7/1-7:1.0/bluetooth/hci0/hci0:1024/0005:05AC:030E.000A/power_supply/hid-f4:1b:a1:
lines 6761-6814/6814 (END)
`
In case it is useful, I am using blueman 2.0.5-1ubuntu1 and libinput-bin
1.10.4-1
** Affects: ubuntu
Importance: Undecided
Status: New
** Tags: bluetooth touchpad trackpad
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https://bugs.launchpad.net/bugs/1834085
Title:
Bluetooth touchpad (Apple Magic Trackpad) disconnects every few
minutes
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