Subject: Automatic graphics switching...

Hi All,

Some users are complaining that my application (MacHg) is causing their
MacBooks to switch from using the integrated Intel (lower power) card to the
NVIDIA (higher power) graphics card.

Eg some related articles I dug up:

However, my application doesn't appear on the surface to make heavy use of
graphics. (It does make heavy use of GCD though). Is there a general cause for
this switching of the graphics card?. How can I find out when such a switch
occurs in my code and for what reasons? Is there some technical article which
explains the details of what's going on here?


Cocoa-dev mailing list ([email protected])

Please do not post admin requests or moderator comments to the list.
Contact the moderators at cocoa-dev-admins(at)

Help/Unsubscribe/Update your Subscription:

This email sent to [email protected]

Programming list archiving by: Enterprise Git Hosting