Freeze on Asus N56VZ

Hi all,

I am just installed the Debian testing release downloaded by the weekly
build (today), my PC is a laptop Ausus :

ASUS N56VZ-S4035V
I7-3610Q<?ui=2&view=bsp&ver=ohhl4rw8mbn4#1387f864ab195088_link+prodotto>

My problem are some "freeze" of my PC  caused when music or video are
ongoing do you have any suggest for me in order to better investigate the
problem ? I cat here the result of /var/log/messages but I don't  know if
there is other way to understand.

*Jul 19 00:23:54 pedr0 rsyslogd-2177: imuxsock begins to drop messages from
pid 2507 due to rate-limiting
Jul 19 00:23:58 pedr0 rsyslogd-2177: imuxsock lost 43 messages from pid
2507 due to rate-limiting
Jul 19 00:28:59 pedr0 rsyslogd: [origin software="rsyslogd"
swVersion="5.8.11" x-pid="1672" x-info="http://www.rsyslog.com"] rsyslogd
was HUPed
*

Bye!

pedr0