HP/Compaq nx6325 clock "jumping around"

Peter Jeremy peterjeremy at optushome.com.au
Mon Jul 7 00:00:24 UTC 2008


On 2008-Jul-03 15:55:28 +1000, Bruce Evans <brde at optusnet.com.au> wrote:
>- pressing the lid switch to turn the screen off makes the time jump by
>   almost precisely 1 second using any timecounter.  The system appears
>   to spend the 1 second in something like SMM mode with all interrupts
>   and all timecounters stopped.  More precisely, the jump is:
>   ACPI-fast and TSC: -1.000000 +- 10 uS
>   i8254:             -1.043000 +- 1 mS

My nx6125 with F.11 BIOS does something very similar but only in VTY
mode - I don't see the time jump when running X (and I haven't tried
measuring the jump to that accuracy).  Sometimes I see a time jump
when switching between VTY and X.  Other than that, ntpd is quite
happy with ACPI-fast.

-- 
Peter Jeremy
Please excuse any delays as the result of my ISP's inability to implement
an MTA that is either RFC2821-compliant or matches their claimed behaviour.
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