On Mon, Jul 6, 2009 at 7:53 PM, Fernando Cassia <[email protected]> wrote:
> > > On Mon, Jul 6, 2009 at 4:07 PM, Leslie Satenstein < > [email protected]> wrote: > >> >> >>> My thoughts are that it is a physical problem, possibly clogged >> processor cooling fins. I once removed the heat sink (I DO NOT RECOMMEND >> THIS), and reapplied new heat-conducting goo and reseated the heatsink. > > > The same system does NOT exhibir the fan up-and-down when booted with XP64, > but does with F11... > > I think it might be related to AMD´s Powernow (is it supported in Linux?) > where the CPU adapts power consumption due to cpu load, and interaction with > the BIOS. > > The Sun w1100z for instance once had a BIOS bug that made it loud during > the whole boot process and the internal fans (not CPU fans but case fans) > only slowed after WinXP fully booted.. A BIOS update from Sun Micro fixed > it. > > So I´d GUESS there´s some relation between bios, temperature sensors (CPU > and CASE internal temp sensors), and maybe AMD powernow - cpu load as well. > It´d be interesting for me to know how the Linux kernel interacts with all > this... > Shooting in the dark here... and this tech note doesn´t show any dates... http://h18000.www1.hp.com/products/servers/linux/powernow-notes.html In any case, I see here https://admin.fedoraproject.org/pkgdb/packages/name/cpuspeed#Fedora11 that CPUspeed is included. I must check next time I boot the box if it´s installed and enabled, and if there´s anything which can be tweaked. FC
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