[Bug 1481136] Re: Bluetooth mouse fails to reconnect after suspend + resume

[Ubfan]

Ubuntu 16.04 patched to date.
Below is the sequence of re-enabling the bluetooth mouse after suspend. Note that
either of two different things being blocked, tpacpi_bluetooth_sw, and hci0, will
keep the mouse from working.

After a resume from suspend, the title bar bluetooth icon is greyed out.
$ rfkill list
0: tpacpi_bluetooth_sw: Bluetooth
    Soft blocked: yes
    Hard blocked: no
2: phy0: Wireless LAN
    Soft blocked: no
    Hard blocked: no

>From title bar bluetooth icon, started bluetooth settings, and in the
settings, turned the bluetooth switch off, then on. Title bar icon disappeared,
then reappeared greyed out.
$ rfkill list
0: tpacpi_bluetooth_sw: Bluetooth
    Soft blocked: no
    Hard blocked: no
2: phy0: Wireless LAN
    Soft blocked: no
    Hard blocked: no
26: hci0: Bluetooth
    Soft blocked: yes
    Hard blocked: no

After turning on the bluetooth switch from the title bar bluetooth icon
the icon became white, and connected with the bluetooth mouse.
$ rfkill list
0: tpacpi_bluetooth_sw: Bluetooth
    Soft blocked: no
    Hard blocked: no
2: phy0: Wireless LAN
    Soft blocked: no
    Hard blocked: no
26: hci0: Bluetooth
    Soft blocked: no
    Hard blocked: no

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https://bugs.launchpad.net/bugs/1481136

Title:
  Bluetooth mouse fails to reconnect after suspend + resume

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