On Fri, 2005-04-22 at 14:52 -0500, Martin wrote: > Since upgrading from FC3 to FC4.2 plus rawhide updates, my Centrino > notebook fan is very audible compared to it being silent in FC3 when > the system is mostly idle. > > [...] Maybe your CPU runs at the maximum frequency even when idle. Check with: $ grep MHz /proc/cpuinfo model name : Intel(R) Pentium(R) M processor 1500MHz cpu MHz : 598.086 Do you have any of the frequency governors installed? cpuspeed should work fine. Make sure the "centrino" driver is specified in /etc/cpuspeed.conf and that the cpuspeed service is running. There's also a nifty GNOME applet, if you feel like setting the frequency manually. -- Ziga