sony-vaio-z-series team mailing list archive

[David Aveiro <daveiro@xxxxxxxxxxx>]

Thanks for your answer Michael, but it only came to me and not the list, 
you should have put the list address in the To: field of your message 
and not the Cc: one. So I send it to the list now :)

Kind regards
David

On 11/18/2010 09:05 AM, Michael Zugelder wrote:
> On Sat, Nov 13, 2010 at 7:01 PM, David Aveiro<daveiro@xxxxxxxxxxx>  wrote:
> > Regarding power consumption I still find it a big high compared to one email
> > I saw of Adam with 10W! Here's  my output:
> >
> >      PowerTOP version 1.13      (C) 2007 Intel Corporation
> >
> > Cn                Avg residency       P-states (frequencies)
> > C0 (cpu running)        ( 0.5%)       Turbo Mode     7.1%
> > polling           0.0ms ( 0.0%)         2.67 Ghz     0.0%
> > C1 mwait          0.1ms ( 0.0%)         2.40 Ghz     0.7%
> > C2 mwait          1.8ms ( 0.9%)         2.14 Ghz     0.0%
> > C3 mwait         19.6ms (98.6%)         1199 Mhz    92.2%
> >
> > Wakeups-from-idle per second : 56.7     interval: 15.0s
> > Power usage (ACPI estimate): 13.2W (4.4 hours)
> >
> > Top causes for wakeups:
> >   15.3% ( 16.2)   PS/2 keyboard/mouse/touchpad interrupt
> >   13.1% ( 13.9)   kworker/0:0
> >    9.0% (  9.5)   [ahci]<interrupt>
> Hi,
> I've got basically the same output, which is a bit annoying, since Windows got
> along with just about 8-9 Watts, IIRC.
>
> > I get extremely high values for the touch pad... is this normal? Also is
> > there a simple way to enable INOTIFY without recompiling the kernel?
> This should be normal. PS/2 devices (keyboard/touchpad) cause an interrupt to
> notify for new data. This allows the OS to react basically instantaneously to
> input events, which results in a great interactivity. Unfortunately this really
> is a bit disastrous, when trying to keep the CPUs in a low-power sleep state,
> but that's the way it used to work for the last 20 years or so.
>
> USB works without interrupts, but I'm not quite sure, if it would result in
> measurable powersavings, because of the needed polling, when the devices aren't
> used.
>
> > Regarding Compiz, if I try to activate Desktop Effects, I get the very
> > strange effect of a "vertical mirror flip" in the output, that is, the
> > display is fine, but I see all display's letters (and images) as if they
> > were vertically flipped and then projected in a mirror! Anybody ever saw
> > anything like this and knows how to solve it?
> Yes, I got that multiple times and I was really surprised. This was caused by
> some weird Intel/NVidia lib mixup issue. So you should be able to solve it by
> reinstalling the corresponding packages (libgl1, xorg-driver-intel).
>
>
> Michael