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Wednesday, 3 February 2010

Current roadmap for switchable graphics in Linux

David Airlie and Matthew Garrett have done some more investigations and the current roadmap for switchable graphics in Linux looks like this:

  • ATI/ATI and Intel/ATI configurations will use ATPX and maybe XPTX calls.
  • Intel/nvidia and nvidia/nvidia configurations will use _DCM related calls.

_OFF methods are abstracted behind the ones above, so they shouldn't be used directly.

Hot switching:
Given a on/off switch event, the switch will be delayed until the X.Org Server is restarted. This will need a switch call, then a log-out and GDM restart.


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