The following commands fixed this issue for me on a Toshiba Satellite U500:
$ sudo -i # echo 0 > /proc/acpi/thermal_zone/TM0/cooling_mode # echo 0 > /proc/acpi/fan/FAN0/state Adding these before the exit 0 in /etc/rc.local helped. -- Ubuntu ACPI/FAN Bug. Overheating issues. https://bugs.launchpad.net/bugs/572528 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs