3399ProD Debian10 root密码多少

刷了Debian10的系统，请问root密码多少?

另外一直刷这个Log，如何关掉?

[ 2561.209643] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready
[ 2561.230056] IPv6: ADDRCONF(NETDEV_UP): p2p0: link is not ready
[ 2561.917396] RTW: wlan0- hw port(0) mac_addr =0a:c1:fe:ca:8c:b7
[ 2561.919295] RTW: p2p0- hw port(1) mac_addr =fe:32:5f:bf:3c:15
[ 2561.932364] RTW: nolinked power save leave
[ 2563.588341] RTW: nolinked power save enter
[ 2564.257750] RTW: wlan0- hw port(0) mac_addr =0a:c1:fe:ca:8c:b7
[ 2564.259373] RTW: p2p0- hw port(1) mac_addr =fe:32:5f:bf:3c:15
[ 2564.270692] RTW: nolinked power save leave
[ 2568.324483] RTW: nolinked power save enter
[ 2625.025395] RTW: wlan0- hw port(0) mac_addr =0a:c1:fe:ca:8c:b7
[ 2625.027170] RTW: p2p0- hw port(1) mac_addr =fe:32:5f:bf:3c:15

debian系统没有默认root账户，需要用sudo跳转，
sudo -s