Linked by Thom Holwerda on Tue 13th Apr 2010 16:55 UTC
Apple "After an unusually long wait, Apple has finally released updated models of its MacBook Pro line of notebooks. The 15" and 17" models offer the latest Core i5 and i7 processors, though the 13" model still uses a Core 2 Duo processor. But new processors aren't the only improvement; Apple has also seen fit to increase the base RAM configuration to 4GB on all models and bump the hard drive and SSD options. And Apple claims battery life has been improved, with some models now going as long as 10 hours without plugging in."
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RE: from apple?
by computeruser on Tue 13th Apr 2010 18:26 UTC in reply to "from apple? "
computeruser
Member since:
2009-07-21

Nvidia's Optimus technology did not come from Apple. I hope Apple rephrases that or Nvidia says something...

nVidia says it's not Optimus: http://forums.appleinsider.com/showthread.php?s=&threadid=108696
nVidia Optimus provides software support to switch the GPU automatically using the same output on Windows. NT has supported GPU driver switching without losing the session since at least Windows 2000; this is how Remote Desktop works. Windows 7 also supports full composting (Aero) with completely separate drivers. Optimus switches the current GPU in a user-friendly and meaningful way on Windows.

Besides the driver and window server implementation, all that is needed to implement this is two GPUs and a software-controllable switch between the two GPU outputs (or shared video output hardware).

The difficulty of implementing such a feature with the current X.org infrastructure probably explains why Optimus is not supported on Linux.

Reply Parent Score: 2

RE[2]: from apple?
by zdzichu on Wed 14th Apr 2010 06:36 in reply to "RE: from apple? "
zdzichu Member since:
2006-11-07

It certainly possible in Linux, was done as PoC by Radeon developer: http://airlied.livejournal.com/71734.html

Reply Parent Score: 1

RE[3]: from apple?
by _txf_ on Wed 14th Apr 2010 10:11 in reply to "RE[2]: from apple? "
_txf_ Member since:
2008-03-17

Possible, yes, with lots of caveats and nasty hacks. Time to get it working properly 6-12 months if someone were inclined to do so, which does not appear to be the case.

Reply Parent Score: 2

RE[3]: from apple?
by computeruser on Wed 14th Apr 2010 20:37 in reply to "RE[2]: from apple? "
computeruser Member since:
2009-07-21

I didn't say it wasn't possible, just that nVidia didn't support the feature on Linux.
From the linked page:

To make this as good as Windows we need to seriously re-architect the X server + drivers.

X.org/Linux is now missing display capabilities that are present in Windows and Mac OS X. Reminds me of how XFree86 was missing dynamic desktop size/resolution/output changing for years after Mac and Windows systems had it.

Reply Parent Score: 1