AC-3100 with 2.4Ghz problems

Hello for all.

Recently I bought an AC-3100, but today it started to have some weired problems on 2.4Ghz.

All devices at my home thats using 2.4Ghz cannot connect to it.

At log page i got this when I restart 2.4Ghz radio:

Jul 23 22:54:34 rc_service: httpd 3735:notify_rc restart_wireless
Jul 23 22:54:34 syslog: Error unlocking 0: 9 Bad file descriptor
Jul 23 22:54:36 kernel: dhd_detach(): thread:dhd_watchdog_thread:dfc terminated OK
Jul 23 22:54:36 kernel: dhd_detach():...

AC-3100 with 2.4Ghz problems