Christopher, thanks for suggestion! I'v updated BIOS: $ sudo dmidecode -s bios-version && sudo dmidecode -s bios-release-date A11 08/03/2012 But "^@" sequence generation remains. Also I've noticed that the mentioned sequence generated on power adapter plug/unplug.
Christopher, thanks for suggestion! I'v updated BIOS:
$ sudo dmidecode -s bios-version && sudo dmidecode -s bios-release-date
A11
08/03/2012
But "^@" sequence generation remains. Also I've noticed that the mentioned sequence generated on power adapter plug/unplug.