I have used this laptop with SXCE since snv_69. I have noticed this high
battery consumption with more recent builds (say snv_100), but I am not
exactly sure which one.
I am not sure if cpupm is enabled. I didn't do anything to enable it.
Here is an output of powertop running on my machine.
-- Douglas
OpenSolaris PowerTOP version 1.1
Cn Avg residency P-states (frequencies)
C0 (cpu running) (15.8%) 1662 Mhz 100.0%
C1 1.3ms (84.2%)
Wakeups-from-idle per second: 660.8 interval: 5.1s
no ACPI power usage estimate available
Top causes for wakeups:
40.0% (264.3) <kernel> : genunix`cv_wakeup
15.1% (100.0) <kernel> : genunix`clock
13.4% ( 88.4) <interrupt> : ath#0
7.1% ( 47.2) <interrupt> : i8042#0
5.7% ( 37.5) sched : <cross calls>
3.9% ( 26.0) <kernel> : genunix`realitexpire
1.8% ( 11.7) <kernel> :
uhci`uhci_handle_root_hub_status_change
1.5% ( 10.1) <kernel> : ata`ghd_timeout
0.7% ( 4.9) <kernel> : myk`gem_mii_link_watcher
0.7% ( 4.7) <kernel> : genunix`lwp_timer_timeout
On Tue, Feb 3, 2009 at 1:09 PM, Li, Aubrey <aubrey.li at intel.com> wrote:
> Douglas Atique wrote:
>
> > Hi,
> >
> > I have a Sony Vaio VGN-N38Z laptop which used to work well for
> > about 2 hours.
>
> Which build did you use to make your laptop working well for about 2
> hours?
>
> >However, in the latest SXCE builds (I use
> > snv_105 now) I have noticed that once disconnected from AC
> > power, the battery indicator in the Gnome bar starts to
> > decrease almost like a clock and in about 20 minutes it is
> > already asking me to recharge. I started suspecting that some
> > power management-related change is the cause of this behavior
> > because the laptop has been working warm all the time.
> >
> > Can I do something to diagnose a possible problem? If anyone
> > wants to take a look, I offer my time for testing. Just let me know
> > what I have to do.
> >
> > Cheers,
> > Douglas
>
> Did you enable cpupm(speedstep)? What does powertop say?
>
> Thanks,
> -Aubrey
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