Hi, I recently purchased bluetooth mouse and keyboard to use with a Debian 9 machine. I could pair the devices without problems and they do work for some time. However, after some time they stop working. I suspect that some timeout triggers. (After a reboot they start working again for some time.)
I'm using kernel linux-image-4.19.0-0.bpo.6-amd6. Below is an excerpt from /var/log/syslog showing that the Bluetooth module is shutting down. Any suggestions? Nov 18 15:03:23 lupo NetworkManager[717]: <info> [1574085803.9156] device (wlp2s0): set-hw-addr: set MAC address to EA:9D:A4:E8:88:99 (scanning) Nov 18 15:03:23 lupo kernel: [ 6888.646262] IPv6: ADDRCONF(NETDEV_UP): wlp2s0: link is not ready Nov 18 15:03:23 lupo NetworkManager[717]: <info> [1574085803.9227] device (wlp2s0): supplicant interface state: inactive -> disabled Nov 18 15:03:23 lupo NetworkManager[717]: <info> [1574085803.9463] device (wlp2s0): supplicant interface state: disabled -> inactive Nov 18 15:03:23 lupo wpa_supplicant[1140]: wlp2s0: Reject scan trigger since one is already pending Nov 18 15:05:44 lupo kernel: [ 7029.363271] usb 1-4: USB disconnect, device number 3 Nov 18 15:05:44 lupo systemd[1]: Starting Load/Save RF Kill Switch Status... Nov 18 15:05:44 lupo systemd[1]: bluetooth.target: Unit not needed anymore. Stopping. Nov 18 15:05:44 lupo systemd[1]: Stopped target Bluetooth. Nov 18 15:05:44 lupo systemd[1]: Started Load/Save RF Kill Switch Status. Nov 18 15:05:44 lupo /usr/lib/gdm3/gdm-x-session[1292]: (II) config/udev: removing device MX Master 3 Keyboard Nov 18 15:05:44 lupo /usr/lib/gdm3/gdm-x-session[1292]: (**) Option "fd" "50" Nov 18 15:05:44 lupo /usr/lib/gdm3/gdm-x-session[1292]: (II) UnloadModule: "libinput" Nov 18 15:05:44 lupo /usr/lib/gdm3/gdm-x-session[1292]: (II) systemd-logind: releasing fd for 13:85 Nov 18 15:05:44 lupo /usr/lib/gdm3/gdm-x-session[1292]: (II) config/udev: removing device MX Master 3 Mouse Nov 18 15:05:44 lupo /usr/lib/gdm3/gdm-x-session[1292]: (**) Option "fd" "51" Nov 18 15:05:44 lupo /usr/lib/gdm3/gdm-x-session[1292]: (II) UnloadModule: "libinput" Nov 18 15:05:44 lupo /usr/lib/gdm3/gdm-x-session[1292]: (II) systemd-logind: releasing fd for 13:86 Nov 18 15:05:44 lupo /usr/lib/gdm3/gdm-x-session[1292]: (II) config/udev: removing device MX Keys Keyboard Nov 18 15:05:44 lupo /usr/lib/gdm3/gdm-x-session[1292]: (**) Option "fd" "54" Thanks, Fede