sony-vaio-z-series team mailing list archive

[John Evans <bucksteep@xxxxxxxxx>]

Hi Jordi,

I had something similar with my little Vaio PCG-TR2 a while back; it would
discharge all the way to zero while still plugged in. Turns out my AC
adapter had gone bad; current was flowing only some of the time. I changed
to a different adapter and all was well.

John E.


On Wed, Apr 27, 2011 at 6:40 AM, Jordi Augé <jordi@xxxxxxxx> wrote:

> Hi,
>
> I'm having this issue, where under heavy load (and running nvidia) the
> laptop will discharge the battery even while plugged in. After 4-5 hours of
> heavy usage, the battery will go from 90% to 45% approx, plugged in all the
> time.
>
> With powertop, I've had the ACPI Estimate power usage rise up to 53 W,
> which is very high, especially considering the power brick delivers only 40
> W.
>
> All of this is in a VPCZ11X9/e, with bios-provided static graphics
> switching, running a fully updated Ubuntu Natty.
>
> The laptop otherwise works fine, and minimum consumption (intel graphics,
> dimmed down screen, no radio and minimum processor speed) is about 11W,
> according to powertop.
>
> So, what's the maximum power consumption for you? Do you have more powerful
> power bricks? Ever had the battery discharge while plugged in?
>
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