I've just installed ubuntu 13.04 on my notebook Compaq 6720s and found the cpu fun working at high speed after waking system up.
When the system is booted the fan works normaly and realy calm. But after sleep and waking up fan is really noisy.
I hadn't this problem with ubuntu 12.10.
Any help appreciated.
I've found solution for my Compaq 6720s fan and Ubuntu 13.04 here:
Create the file ”/etc/pm/sleep.d/99fancontrol.sh”, insert the code below and chmod 755 it.
Script:
#!/bin/sh
#
#
case "$1" in
hibernate|suspend)
# Stopping is not required.
;;
thaw|resume)
# In background.
echo -n 0 > /sys/devices/virtual/thermal/cooling_device0/cur_state;
sleep 2
echo -n 0 > /sys/devices/virtual/thermal/cooling_device1/cur_state;
sleep 2
echo -n 0 > /sys/devices/virtual/thermal/cooling_device2/cur_state;
;;
*) exit $NA
;;
esac
