My Linux Mint system (17 Cinnamon, lenovo g565) hangs up frequently during work (say, 2-4 times a day). It may look different - white screen, black screen, screen freeze. Checking syslog after hangs brought me the same lines just before system hanged: pastebin, last are:
08:26:34 wpa_supplicant: nl80211: send_and_recv->nl_recvmsgs failed: -33 08:28:32 wpa_supplicant: wlan0: CTRL-EVENT-SCAN-STARTED
I'm not 100% sure, that it it's the reason, but the pattern seems to be same with several hangs. Also I have some CPU temperature issues (noticed 75-82 C), but system hanged even after cpufreq powersave mode.
What should I do to make more specific diagnosis and eliminate the problem?