ubuntu蓝牙设备持续连接

before

# ...
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash"
# ...

after

# ...
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash usbcore.autosuspend=-1"
# ...

sed -i 's/GRUB_CMDLINE_LINUX_DEFAULT="/&usbcore.autosuspend=-1 /' /etc/default/grub
sudo update-grub