Re: dmesg showing wrong frequency (IBM T30)
"Kevin Oberman" <[email protected]>
| Newsgroups | gmane.os.freebsd.devel.mobile |
|---|---|
| Message-ID | <[email protected]> |
> Date: Fri, 18 Jul 2003 16:12:39 +0200 > From: Tobias Roth <[email protected]> > Sender: [email protected] > > Hi > > On my IBM T30 1.8GHz, dmesg (with both 4.8 and 5.1) shows me this line: > > CPU: Intel(R) Pentium(R) 4 Mobile CPU 1.8GHz (1196.13-MHz 686-class CPU) > > Various windows utilities also claim that the cpu identification string > marks my cpu as 1.8 GHz unit, while the maximum frequency always gets > detected as something just below 1.2GHz. > > What is wrong here? To other IBM T30 users: Is your CPU identification > correct? Were you on AC or battery when you booted? It seems that the T30 (and many other laptops from multiple vendors) does not change the CPU speed when APM/ACPI from FreeBSD tells it to. If I boot on battery, my system stays at 1.2 GHz and if I boot on AC power, the system runs 1.8 GHz. Changes to the power source made after it is up seem to have no effect. -- R. Kevin Oberman, Network Engineer Energy Sciences Network (ESnet) Ernest O. Lawrence Berkeley National Laboratory (Berkeley Lab) E-mail: [email protected] Phone: +1 510 486-8634 _______________________________________________ [email protected] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-mobile To unsubscribe, send any mail to "[email protected]"