clock drifts after upgrade from 5.x to 6.x
Alfred Morgan
alfred.morgan at experclick.com
Tue Mar 21 20:03:07 UTC 2006
I have upgraded 4 different machines from various FreeBSD versions of
5 to various versions of 6 and 3 of the machines has a problem where
the clock will drift very quickly slowing about 2 seconds per minute.
These are the machines with dmesg | grep time: (specs from
[1]www.hp.com)
*(no drift) HP pavilion a510n (Via KM400A, ASUS A7V8X-LA)
Timecounter "i8254" frequency 1193182 Hz quality 0
Timecounter "ACPI-fast" frequency 3579545 Hz quality 1000
acpi_timer0: <24-bit timer at 3.579545MHz> port 0x4008-0x400b on acpi0
pmtimer0 on isa0
Timecounter "TSC" frequency 2100094312 Hz quality 800
Timecounters tick every 1.000 msec
*(bad drift) HP pavilion a510n (Via KM400A, ASUS A7V8X-LA)
Timecounter "i8254" frequency 1193182 Hz quality 0
pci0: <multimedia, audio> at device 17.5 (no driver attached)
pmtimer0 on isa0
Timecounter "TSC" frequency 2100088469 Hz quality 800
Timecounters tick every 1.000 msec
*(bad drift) Compaq Presario SR1230NX (Via KM400A, A7V8Z-LA)
*(bad drift) Compaq Presario S6500NX (Via KM400, ASUS A7V8X-LA)
Timecounter "TSC" frequency 2158040786 Hz quality 800
Timecounters tick every 1.000 msec
Timecounter "i8254" frequency 1193182 Hz quality 0
The one computer that did work (the first HP pavilion a510n) seems to
be the only one with ACPI enabled.
-alfred
References
1. http://www.hp.com/
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