* sony-laptop platform driver
@ 2009-09-11 15:12 tsuraan
2009-09-11 21:59 ` Matthew Garrett
0 siblings, 1 reply; 3+ messages in thread
From: tsuraan @ 2009-09-11 15:12 UTC (permalink / raw)
To: linux-kernel
The current mainline sony-laptop platform driver is missing some
crucial features from Eva's driver
(http://www.basyskom.org/~eva/log_installation_vaio_z21vnx.html),
especially the ability to shut off the embedded nvidia card in laptops
with hybrid graphics. Simply disabling the nvidia card using Eva's
driver brings my laptop's power consumption from 18W to 12W, which is
a pretty huge leap in battery life.
Is there any plan to merge the changes from Eva's driver into
mainline? Eva's current 0.9 driver wont compile under 2.6.31 due to a
pretty major reorganization of the mainline code, so I'm stuck with
2.6.30 until either the nvidia disabling code is merged into mainline,
or Eva's driver gets updated. I would think a merge would be ideal,
if it's possible.
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: sony-laptop platform driver
2009-09-11 15:12 sony-laptop platform driver tsuraan
@ 2009-09-11 21:59 ` Matthew Garrett
2009-09-12 3:14 ` tsuraan
0 siblings, 1 reply; 3+ messages in thread
From: Matthew Garrett @ 2009-09-11 21:59 UTC (permalink / raw)
To: tsuraan; +Cc: linux-kernel
On Fri, Sep 11, 2009 at 10:12:32AM -0500, tsuraan wrote:
> The current mainline sony-laptop platform driver is missing some
> crucial features from Eva's driver
> (http://www.basyskom.org/~eva/log_installation_vaio_z21vnx.html),
> especially the ability to shut off the embedded nvidia card in laptops
> with hybrid graphics. Simply disabling the nvidia card using Eva's
> driver brings my laptop's power consumption from 18W to 12W, which is
> a pretty huge leap in battery life.
The interface used for that isn't sony-specific, so sony-laptop is the
wrong place to put it. I've just submitted a patch to the nouveau
developers.
--
Matthew Garrett | mjg59@srcf.ucam.org
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: sony-laptop platform driver
2009-09-11 21:59 ` Matthew Garrett
@ 2009-09-12 3:14 ` tsuraan
0 siblings, 0 replies; 3+ messages in thread
From: tsuraan @ 2009-09-12 3:14 UTC (permalink / raw)
To: Matthew Garrett; +Cc: linux-kernel
> The interface used for that isn't sony-specific, so sony-laptop is the
> wrong place to put it. I've just submitted a patch to the nouveau
> developers.
In my case, I never want the nvidia card to be running. Would I load
the nouveau driver for the sole purpose of shutting down the card? I
don't want X to be using nouveau; it uses my intel card without any
problems, and with a small fraction of the power consumption. Does
nouveau work without X? I'm not familiar with how it is split between
user and kernel space.
^ permalink raw reply [flat|nested] 3+ messages in thread
end of thread, other threads:[~2009-09-12 3:14 UTC | newest]
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2009-09-11 15:12 sony-laptop platform driver tsuraan
2009-09-11 21:59 ` Matthew Garrett
2009-09-12 3:14 ` tsuraan
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