* Pavel Machek <[EMAIL PROTECTED]> [050727 01:00]:
> Hi!
>
> > > USB devices prevent entering C3 and any interesting powersaving,
> > > try without USB...
> >
> > Why do USB devices prevent C3? If it was because of the timer polling
> > in the root hub, I believe that should be fixed now.
> >
>
Hi!
> > USB devices prevent entering C3 and any interesting powersaving,
> > try without USB...
>
> Why do USB devices prevent C3? If it was because of the timer polling
> in the root hub, I believe that should be fixed now.
>
> Or is there some other reason?
Yes. UHCI zas keeps doing DMA all t
* Pavel Machek <[EMAIL PROTECTED]> [050725 08:57]:
>
> USB devices prevent entering C3 and any interesting powersaving,
> try without USB...
Why do USB devices prevent C3? If it was because of the timer polling
in the root hub, I believe that should be fixed now.
Or is there some other reason?
On Mon, 25 Jul 2005, Marc Ballarin wrote:
> Hmm, just did. I even tried the rather minimalistic configuration below.
> Still no C3. (And what seems even stranger: no C1.)
there's no point to going into C1 if the C2 entry/exit latencies are
acceptable. (winxp generally never uses C1 if C2 is ava
yes, this approach is valid.
I've done the exact same measurements for 100HZ vs 1000HZ.
For currently shipping laptops, I didn't see a significant
difference.,
Note that the quality of the instrumentation on
the battery can vary widely, and so if you really
want the best numbers you need to start
Marc Ballarin wrote:
Hi,
I did some measurements in order to compare power drain with HZ250 and
HZ1000.
To measure the actual drain, I used the "smart" battery's internal measurement.
(Available with acpi-sbs in /proc/acpi/sbs/SBS0/SB0/state.)
No clue how accurate this is.
Here some battery deta
On Mon, 25 Jul 2005 17:53:22 +0200
Pavel Machek <[EMAIL PROTECTED]> wrote:
> USB devices prevent entering C3 and any interesting powersaving,
> try without USB...
Hmm, just did. I even tried the rather minimalistic configuration below.
Still no C3. (And what seems even stranger: no C1.)
Is thi
Hi!
> I did some measurements in order to compare power drain with HZ250 and
> HZ1000.
> To measure the actual drain, I used the "smart" battery's internal
> measurement.
> (Available with acpi-sbs in /proc/acpi/sbs/SBS0/SB0/state.)
> No clue how accurate this is.
>
> Here some battery details,
Hi,
I did some measurements in order to compare power drain with HZ250 and
HZ1000.
To measure the actual drain, I used the "smart" battery's internal measurement.
(Available with acpi-sbs in /proc/acpi/sbs/SBS0/SB0/state.)
No clue how accurate this is.
Here some battery details, in case someone kn
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