[ 2.454013] EXT4-fs (sdd12): couldn't mount as ext3 due to feature incompatibilities
[ 2.534659] (stk) :ldisc installation timeout[FAILED] Failed to start Hostname Service.
See 'systemctl status systemd-hostnamed.service' for details.
[ OK ] Started Update UTMP about System Runlevel Changes.
[ 3.522900] vgaarb: this pci device is not a vga device
[ 3.558509] (stk) : timed out waiting for ldisc to be un-installed[ 4.183890] vgaarb: this pci device is not a vga device
[ OK ] Created slice User Slice of lightdm.
Starting User Manager for UID 107...
[ OK ] Started Session c1 of user lightdm.
[ OK ] Started User Manager for UID 107.
[ 4.678535] (stk) :ldisc installation timeout(stk) : timed out waiting for ldisc to be un-installed(stk) :ldisc installation timeout(stk) : timed out waiting for ldisc to be un-installed(stk) :ldisc installation timeout
Ubuntu 16.04.4 LTS hikey970 ttyAMA6
hikey970 login: (stk) : timed out waiting for ldisc to be un-installed(stk) :ldisc installation timeout(stk) : timed out waiting for ldisc to be un-installed(stk) :ldisc installation timeout(stk) : timed out waiting for ldisc to be un-installed[ 14.285286] Bluetooth: st_register failed -22
[ 15.430532] (stk) :ldisc installation timeout
[ 16.454582] (stk) : timed out waiting for ldisc to be un-installed
[ 17.574553] (stk) :ldisc installation timeout
[ 18.598545] (stk) : timed out waiting for ldisc to be un-installed
[ 19.718583] (stk) :ldisc installation timeout
[ 20.742553] (stk) : timed out waiting for ldisc to be un-installed
[ 21.862538] (stk) :ldisc installation timeout
[ 22.886543] (stk) : timed out waiting for ldisc to be un-installed
[ 24.006760] (stk) :ldisc installation timeout
[ 25.030525] (stk) : timed out waiting for ldisc to be un-installed
[ 26.150525] (stk) :ldisc installation timeout
[ 27.175639] (stk) : timed out waiting for ldisc to be un-installed
[ 27.183906] Bluetooth: st_register failed -22