Hi

Robert Boehm wrote:
> On SL Fermi 4.1, on a new Intel based laptop, with the BIOS set for
> "Intel SpeedStep" enabled...the kernel panics and won't boot the system.
> With it disabled, it will boot.  The complaint is that it's "won't sync" or
> is "out of sync".  the Koppix kernel and SUSE kernel boots with it enabled.
> Just for information...I am not familiear with how the speedstep system
> works from the BIOS.
> 
> Not critical...just info....

You may want to try newer kernel (from 4.2 -> 2.6.9-22.0.1.EL)
.. there is some chance that the problem is ACPI related ..
(you could also try acpi=off at boot time .. but this will
completely disable power management .. including speedstep
handling)

Also: on my IBM Thinkpad laptop in order to use speedstep
(with 2.6.9-22.0.1.EL(.cern)) I've installed 'cpufreqd'
(from DAG repository) - the shipped cpuspeed (from kernel-utils
package) did not work too well..

cpuspeed relays on CPU-specific kernel modules : while cpufreqd
is user-space daemon using ACPI information.

Cheers

Jarek

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