The bluetooth failure to resume after a suspend seems USB related. The failure
happens
about 50% of the time, and when it does, disabling bluetooth and restarting
fixes
it.
On a Lenovo W520, Ubuntu 16.04, 64 bit, kernel 4.4.0-98-generic, Microsoft
Sculpt
Comfort BT mouse.
Looking at dmesg|tail on the restoring of BT mouse after sleep and restarting
it, a new USB device is created and used.
Return from sleep, BT indicator greyed, BT says OFF, BT mouse is inactive.
>From the indicator, start BT settings, and from the settings, turn off
>bluetooth,
(indicator disappears), one line is added to dmesg output:
[37331.845034] usb 1-1.4: USB disconnect, device number 10
>From the settings, turn back on the BT active switch (BT indicator appears):
[37353.288616] usb 1-1.4: new full-speed USB device number 11 using ehci-pci
[37353.386069] usb 1-1.4: New USB device found, idVendor=0a5c, idProduct=217f
[37353.386079] usb 1-1.4: New USB device strings: Mfr=1, Product=2,
SerialNumber=3
[37353.386084] usb 1-1.4: Product: Broadcom Bluetooth Device
[37353.386089] usb 1-1.4: Manufacturer: Broadcom Corp
[37353.386092] usb 1-1.4: SerialNumber: 60D819B1B675
[37353.578455] [UFW BLOCK] IN=wlp3s0 OUT=
MAC=01:00:5e:00:00:01:c0:56:27:ce:27:3e:08:00
SRC=192.168.1.1 DST=224.0.0.1 LEN=28 TOS=0x00 PREC=0xC0 TTL=1 ID=61239
PROTO=2
Note the USB device number 10 was disconnected, but the new USB device is 11.
BT indicator is still greyed, BT switch is off, mouse inactive. Turn on BT in
the indicator
Indicator becomes white.
Absolutely no change in the dmesg output
Click/move mouse to connect, lock shows on BT indicator
[37414.788430] hid-generic 0005:045E:07A2.0012: unknown main item tag 0x0
[37414.789070] input: Microsoft Sculpt Comfort Mouse as
/devices/pci0000:00/0000:00:1a.0
/usb1/1-1/1-1.4/1-1.4:1.0/bluetooth/hci0/hci0:11/0005:045E:07A2.0012/input/input32
[37414.789676] hid-generic 0005:045E:07A2.0012: input,hidraw2: BLUETOOTH HID
v1.29 Mouse
[Microsoft Sculpt Comfort Mouse] on 60:d8:19:b1:b6:75
Note the USB device has incremented to input32 (this has happened many times
on this running system)
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https://bugs.launchpad.net/bugs/1561474
Title:
Bluetooth will be disable after resume from suspend on Xenial
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