18,04 катастрофических отказов Bluetooth

Привет у меня есть Dell Precision 5520 (купленный февраль 2018) с Адаптером Беспроводной сети Qualcomm Atheros QCA6174 802.11 акров под управлением Ubuntu 18.04.

Я испытываю затруднения из-за подключения Bluetooth между ноутбуком и моей беспроводной мышью Logitech MX Master. Компьютер потеряет соединение с мышью многократно в день. Когда это происходит, значок Bluetooth в верхнем правом угле экрана исчезает. Проверяя системную предпочтительную панель Bluetooth, Bluetooth выключен. Я могу переключить переключатель к "на", но Bluetooth остается выключенным. Ни перезапуск компьютера, ни цикл включения и выключения питания компьютера не возвращают Bluetooth. $ sudo service bluetooth restart также не работает. Единственным путем я нашел к renable Bluetooth:

1. перезагрузка
2. отключите Bluetooth в BIOS
3. перезагрузка
4. включите Bluetooth в BIOS
5. перезагрузка

Кроме того, я запускал Ubuntu 16.04 до этого в прошлую пятницу. Я испытал эту проблему под 16,04, но это происходило намного менее часто (один раз в недели пары или так). Я обновил до 18,04 перед 18.04.1 в надеждах, что более новое ядро/драйвер будет работать лучше с моими совершенно новыми аппаратными средствами. Теперь, под 18,04, Bluetooth отказывает многократно в день.

Вот вывод $ grep blue /var/log/syslog сразу после разрушенного Bluetooth.

Jun  6 09:12:41 Precision-5520 bluetoothd[3189]: src/adapter.c:dev_class_changed_callback() Class: 0x000000
Jun  6 09:12:41 Precision-5520 bluetoothd[3189]: src/adapter.c:new_settings_callback() Settings: 0x00000ada
Jun  6 09:12:41 Precision-5520 bluetoothd[3189]: src/adapter.c:settings_changed() Changed settings: 0x00000001
Jun  6 09:12:41 Precision-5520 bluetoothd[3189]: src/adapter.c:cancel_passive_scanning()
Jun  6 09:12:41 Precision-5520 bluetoothd[3189]: src/adapter.c:adapter_remove_connection()
Jun  6 09:12:41 Precision-5520 bluetoothd[3189]: src/adapter.c:adapter_remove_connection()
Jun  6 09:12:41 Precision-5520 bluetoothd[3189]: src/adapter.c:adapter_stop() adapter /org/bluez/hci0 has been disabled
Jun  6 09:12:41 Precision-5520 bluetoothd[3189]: src/device.c:att_disconnected_cb()
Jun  6 09:12:41 Precision-5520 bluetoothd[3189]: src/device.c:att_disconnected_cb() Software caused connection abort (103)
Jun  6 09:12:41 Precision-5520 bluetoothd[3189]: src/service.c:change_state() 0x565278ad2320: device F9:9B:77:D9:08:61 profile batt-profile state changed: connected -> disconnecting (0)
Jun  6 09:12:41 Precision-5520 bluetoothd[3189]: src/service.c:change_state() 0x565278ad2320: device F9:9B:77:D9:08:61 profile batt-profile state changed: disconnecting -> disconnected (0)
Jun  6 09:12:41 Precision-5520 bluetoothd[3189]: src/service.c:change_state() 0x565278ad2230: device F9:9B:77:D9:08:61 profile deviceinfo state changed: connected -> disconnecting (0)
Jun  6 09:12:41 Precision-5520 bluetoothd[3189]: src/service.c:change_state() 0x565278ad2230: device F9:9B:77:D9:08:61 profile deviceinfo state changed: disconnecting -> disconnected (0)
Jun  6 09:12:41 Precision-5520 bluetoothd[3189]: src/service.c:change_state() 0x565278adce30: device F9:9B:77:D9:08:61 profile gap-profile state changed: connected -> disconnecting (0)
Jun  6 09:12:41 Precision-5520 bluetoothd[3189]: src/service.c:change_state() 0x565278adce30: device F9:9B:77:D9:08:61 profile gap-profile state changed: disconnecting -> disconnected (0)
Jun  6 09:12:41 Precision-5520 bluetoothd[3189]: src/service.c:change_state() 0x565278adc150: device F9:9B:77:D9:08:61 profile input-hog state changed: connected -> disconnecting (0)
Jun  6 09:12:41 Precision-5520 bluetoothd[3189]: attrib/gattrib.c:g_attrib_unref() 0x565278add490: g_attrib_unref=1
Jun  6 09:12:41 Precision-5520 bluetoothd[3189]: src/service.c:change_state() 0x565278adc150: device F9:9B:77:D9:08:61 profile input-hog state changed: disconnecting -> disconnected (0)
Jun  6 09:12:41 Precision-5520 bluetoothd[3189]: src/gatt-client.c:btd_gatt_client_disconnected() Device disconnected. Cleaning up.
Jun  6 09:12:41 Precision-5520 bluetoothd[3189]: attrib/gattrib.c:g_attrib_unref() 0x565278add490: g_attrib_unref=0
Jun  6 09:12:41 Precision-5520 bluetoothd[3189]: src/adapter.c:index_removed() index 0
Jun  6 09:12:41 Precision-5520 bluetoothd[3189]: src/adapter.c:adapter_unregister() Unregister path: /org/bluez/hci0
Jun  6 09:12:41 Precision-5520 bluetoothd[3189]: src/adapter.c:adapter_remove() Removing adapter /org/bluez/hci0
Jun  6 09:12:41 Precision-5520 bluetoothd[3189]: src/device.c:device_remove() Removing device /org/bluez/hci0/dev_F9_9B_77_D9_08_61
Jun  6 09:12:41 Precision-5520 bluetoothd[3189]: src/service.c:change_state() 0x565278ad2320: device F9:9B:77:D9:08:61 profile batt-profile state changed: disconnected -> unavailable (0)
Jun  6 09:12:41 Precision-5520 bluetoothd[3189]: profiles/battery/battery.c:batt_remove() BATT profile remove (F9:9B:77:D9:08:61)
Jun  6 09:12:41 Precision-5520 bluetoothd[3189]: src/service.c:btd_service_unref() 0x565278ad2320: ref=0
Jun  6 09:12:41 Precision-5520 bluetoothd[3189]: src/service.c:change_state() 0x565278ad2230: device F9:9B:77:D9:08:61 profile deviceinfo state changed: disconnected -> unavailable (0)
Jun  6 09:12:41 Precision-5520 bluetoothd[3189]: src/service.c:btd_service_unref() 0x565278ad2230: ref=0
Jun  6 09:12:41 Precision-5520 bluetoothd[3189]: src/service.c:change_state() 0x565278adce30: device F9:9B:77:D9:08:61 profile gap-profile state changed: disconnected -> unavailable (0)
Jun  6 09:12:41 Precision-5520 bluetoothd[3189]: profiles/gap/gas.c:gap_remove() GAP profile remove (F9:9B:77:D9:08:61)
Jun  6 09:12:41 Precision-5520 bluetoothd[3189]: src/service.c:btd_service_unref() 0x565278adce30: ref=0
Jun  6 09:12:41 Precision-5520 bluetoothd[3189]: src/service.c:change_state() 0x565278adc150: device F9:9B:77:D9:08:61 profile input-hog state changed: disconnected -> unavailable (0)
Jun  6 09:12:41 Precision-5520 bluetoothd[3189]: src/service.c:btd_service_unref() 0x565278adc150: ref=1
Jun  6 09:12:41 Precision-5520 bluetoothd[3189]: profiles/input/hog.c:hog_remove() path /org/bluez/hci0/dev_F9_9B_77_D9_08_61
Jun  6 09:12:41 Precision-5520 bluetoothd[3189]: src/service.c:btd_service_unref() 0x565278adc150: ref=0
Jun  6 09:12:41 Precision-5520 bluetoothd[3189]: src/device.c:btd_device_unref() Freeing device /org/bluez/hci0/dev_F9_9B_77_D9_08_61
Jun  6 09:12:41 Precision-5520 bluetoothd[3189]: src/gatt-client.c:unregister_service() Removing GATT service: /org/bluez/hci0/dev_F9_9B_77_D9_08_61/service0008
Jun  6 09:12:41 Precision-5520 bluetoothd[3189]: src/gatt-client.c:unregister_characteristic() Removing GATT characteristic: /org/bluez/hci0/dev_F9_9B_77_D9_08_61/service0008/char0009
Jun  6 09:12:41 Precision-5520 bluetoothd[3189]: src/gatt-client.c:unregister_descriptor() Removing GATT descriptor: /org/bluez/hci0/dev_F9_9B_77_D9_08_61/service0008/char0009/desc000b
Jun  6 09:12:41 Precision-5520 bluetoothd[3189]: src/gatt-client.c:unregister_service() Removing GATT service: /org/bluez/hci0/dev_F9_9B_77_D9_08_61/service000c
Jun  6 09:12:41 Precision-5520 bluetoothd[3189]: src/gatt-client.c:unregister_characteristic() Removing GATT characteristic: /org/bluez/hci0/dev_F9_9B_77_D9_08_61/service000c/char000d
Jun  6 09:12:41 Precision-5520 bluetoothd[3189]: src/gatt-client.c:unregister_characteristic() Removing GATT characteristic: /org/bluez/hci0/dev_F9_9B_77_D9_08_61/service000c/char000f
Jun  6 09:12:41 Precision-5520 bluetoothd[3189]: src/gatt-client.c:unregister_characteristic() Removing GATT characteristic: /org/bluez/hci0/dev_F9_9B_77_D9_08_61/service000c/char0011
Jun  6 09:12:41 Precision-5520 bluetoothd[3189]: src/gatt-client.c:unregister_characteristic() Removing GATT characteristic: /org/bluez/hci0/dev_F9_9B_77_D9_08_61/service000c/char0013
Jun  6 09:12:41 Precision-5520 bluetoothd[3189]: src/gatt-client.c:unregister_characteristic() Removing GATT characteristic: /org/bluez/hci0/dev_F9_9B_77_D9_08_61/service000c/char0015
Jun  6 09:12:41 Precision-5520 bluetoothd[3189]: src/gatt-client.c:unregister_characteristic() Removing GATT characteristic: /org/bluez/hci0/dev_F9_9B_77_D9_08_61/service000c/char0017
Jun  6 09:12:41 Precision-5520 bluetoothd[3189]: src/gatt-client.c:unregister_characteristic() Removing GATT characteristic: /org/bluez/hci0/dev_F9_9B_77_D9_08_61/service000c/char0019
Jun  6 09:12:41 Precision-5520 bluetoothd[3189]: src/gatt-client.c:unregister_service() Removing GATT service: /org/bluez/hci0/dev_F9_9B_77_D9_08_61/service003f
Jun  6 09:12:41 Precision-5520 bluetoothd[3189]: src/gatt-client.c:unregister_characteristic() Removing GATT characteristic: /org/bluez/hci0/dev_F9_9B_77_D9_08_61/service003f/char0040
Jun  6 09:12:41 Precision-5520 bluetoothd[3189]: src/gatt-client.c:unregister_descriptor() Removing GATT descriptor: /org/bluez/hci0/dev_F9_9B_77_D9_08_61/service003f/char0040/desc0042
Jun  6 09:12:41 Precision-5520 bluetoothd[3189]: src/device.c:device_free() 0x565278adc490
Jun  6 09:12:41 Precision-5520 bluetoothd[3189]: plugins/hostname.c:hostname_remove()
Jun  6 09:12:41 Precision-5520 bluetoothd[3189]: profiles/audio/a2dp.c:media_server_remove() path /org/bluez/hci0
Jun  6 09:12:41 Precision-5520 bluetoothd[3189]: profiles/audio/media.c:release_endpoint() sender=:1.452 path=/MediaEndpoint/A2DPSource
Jun  6 09:12:41 Precision-5520 bluetoothd[3189]: src/adapter.c:adapter_service_remove() /org/bluez/hci0
Jun  6 09:12:41 Precision-5520 bluetoothd[3189]: src/adapter.c:remove_uuid() sending remove uuid command for index 0
Jun  6 09:12:41 Precision-5520 bluetoothd[3189]: src/sdpd-service.c:remove_record_from_server() Removing record with handle 0x10003
Jun  6 09:12:41 Precision-5520 bluetoothd[3189]: profiles/audio/media.c:release_endpoint() sender=:1.452 path=/MediaEndpoint/A2DPSource
Jun  6 09:12:41 Precision-5520 bluetoothd[3189]: Endpoint unregistered: sender=:1.452 path=/MediaEndpoint/A2DPSource
Jun  6 09:12:41 Precision-5520 bluetoothd[3189]: profiles/audio/media.c:media_endpoint_destroy() sender=:1.452 path=/MediaEndpoint/A2DPSource
Jun  6 09:12:41 Precision-5520 bluetoothd[3189]: profiles/audio/avdtp.c:avdtp_unregister_sep() SEP 0x565278ade790 unregistered: type:0 codec:0 seid:1
Jun  6 09:12:41 Precision-5520 bluetoothd[3189]: profiles/audio/media.c:release_endpoint() sender=:1.452 path=/MediaEndpoint/A2DPSink
Jun  6 09:12:41 Precision-5520 bluetoothd[3189]: src/adapter.c:adapter_service_remove() /org/bluez/hci0
Jun  6 09:12:41 Precision-5520 bluetoothd[3189]: src/adapter.c:remove_uuid() sending remove uuid command for index 0
Jun  6 09:12:41 Precision-5520 bluetoothd[3189]: src/sdpd-service.c:remove_record_from_server() Removing record with handle 0x10004
Jun  6 09:12:41 Precision-5520 bluetoothd[3189]: profiles/audio/media.c:release_endpoint() sender=:1.452 path=/MediaEndpoint/A2DPSink
Jun  6 09:12:41 Precision-5520 bluetoothd[3189]: Endpoint unregistered: sender=:1.452 path=/MediaEndpoint/A2DPSink
Jun  6 09:12:41 Precision-5520 bluetoothd[3189]: profiles/audio/media.c:media_endpoint_destroy() sender=:1.452 path=/MediaEndpoint/A2DPSink
Jun  6 09:12:41 Precision-5520 bluetoothd[3189]: profiles/audio/avdtp.c:avdtp_unregister_sep() SEP 0x565278ae1c90 unregistered: type:1 codec:0 seid:2
Jun  6 09:12:41 Precision-5520 bluetoothd[3189]: src/profile.c:ext_adapter_remove() "Headset Voice gateway" removed
Jun  6 09:12:41 Precision-5520 bluetoothd[3189]: src/adapter.c:adapter_service_remove() /org/bluez/hci0
Jun  6 09:12:41 Precision-5520 bluetoothd[3189]: src/adapter.c:remove_uuid() sending remove uuid command for index 0
Jun  6 09:12:41 Precision-5520 bluetoothd[3189]: src/sdpd-service.c:remove_record_from_server() Removing record with handle 0x10005
Jun  6 09:12:41 Precision-5520 bluetoothd[3189]: profiles/audio/a2dp.c:a2dp_source_server_remove() path /org/bluez/hci0
Jun  6 09:12:41 Precision-5520 bluetoothd[3189]: profiles/audio/a2dp.c:a2dp_sink_server_remove() path /org/bluez/hci0
Jun  6 09:12:41 Precision-5520 bluetoothd[3189]: profiles/audio/avrcp.c:avrcp_target_server_remove() path /org/bluez/hci0
Jun  6 09:12:41 Precision-5520 bluetoothd[3189]: src/adapter.c:adapter_service_remove() /org/bluez/hci0
Jun  6 09:12:41 Precision-5520 bluetoothd[3189]: src/adapter.c:remove_uuid() sending remove uuid command for index 0
Jun  6 09:12:41 Precision-5520 bluetoothd[3189]: src/sdpd-service.c:remove_record_from_server() Removing record with handle 0x10002
Jun  6 09:12:41 Precision-5520 bluetoothd[3189]: profiles/audio/avrcp.c:avrcp_controller_server_remove() path /org/bluez/hci0
Jun  6 09:12:41 Precision-5520 bluetoothd[3189]: src/adapter.c:adapter_service_remove() /org/bluez/hci0
Jun  6 09:12:41 Precision-5520 bluetoothd[3189]: src/adapter.c:remove_uuid() sending remove uuid command for index 0
Jun  6 09:12:41 Precision-5520 bluetoothd[3189]: src/sdpd-service.c:remove_record_from_server() Removing record with handle 0x10001
Jun  6 09:12:41 Precision-5520 bluetoothd[3189]: profiles/network/manager.c:nap_server_remove() path /org/bluez/hci0
Jun  6 09:12:41 Precision-5520 bluetoothd[3189]: profiles/network/manager.c:gn_server_remove() path /org/bluez/hci0
Jun  6 09:12:41 Precision-5520 bluetoothd[3189]: profiles/network/manager.c:panu_server_remove() path /org/bluez/hci0
Jun  6 09:12:41 Precision-5520 bluetoothd[3189]: profiles/network/server.c:path_unregister() Unregistered interface org.bluez.NetworkServer1 on path /org/bluez/hci0
Jun  6 09:12:41 Precision-5520 bluetoothd[3189]: src/adapter.c:btd_adapter_unref() Freeing adapter /org/bluez/hci0
Jun  6 09:12:41 Precision-5520 bluetoothd[3189]: src/adapter.c:adapter_free() 0x565278acdb00
Jun  6 09:12:41 Precision-5520 bluetoothd[3189]: src/rfkill.c:rfkill_event() RFKILL event idx 9 type 2 op 1 soft 0 hard 0
Jun  6 09:12:42 Precision-5520 systemd[1]: bluetooth.target: Unit not needed anymore. Stopping.

Я плохо знаком с Ubuntu и не уверен, где повернуться затем. Любое понимание или справка ценились бы. Это быстро становится раздражающим!Спасибо.