MickM
06-04-2012, 05:02 PM
I have a 2009 MacBook Pro and I use SketchBook Pro to draw on a graphics tablet connected to my laptop. The drawing program complains that my laptop does not support Quartz Extreme / Core Image and it brings up a (usually hidden) dialog box complaining about that. I have to go moving windows around finding that miserable dialog box so I can click on OK, only to have the same thing happen again at some random time a little later. Really annoying. Aside from that, the program works just fine. I put the following post into the SketchBook forums, however it occurs to me that this might be a DisplayLink problem because it is corrupting the way programs determine if Quartz Extreme / Core Image is available or not. Could someone please let me know if this is a DisplayLink issue? Here is my post:
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I think I have debugged this further to the point that you might be able to fix this - I believe it is a bug in SketchBook. It turns out my 2009 MacBook Pro does natively have Quartz Extreme / Core Image - all Macs of that vintage do and in fact Apple have stopped specifically mentioning that capability in the System Profiler because it's now redundant (and that's why I thought my Mac wasn't capable).
The issue is how Sketchbook determines if the Mac has Quartz Extreme / Core Image capability. I happen to have two USB DisplayLink monitors and a Wacom DTU-1631 hooked up to my MacBook Pro. Obviously I use the Wacom graphics tablet for my drawing and for better performance I run that through my mini-DisplayPort connector. The issue is that I have set the system menubar to be on one of the external monitors and they are driven via USB using DisplayLink drivers. If I change the system menubar to be on either the MacBook Pro LCD display or on the graphics tablet (connected via mini-DisplayPort) then I do not get the Sketchbook Pro error pertaining to Quartz Extreme / Core Image.
So it sounds like you just need to find an alternate way to decide if the Mac being used has Quartz Extreme / Core Image capability, because the way it's done now is not strictly correct. Hope this helps you!
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I think I have debugged this further to the point that you might be able to fix this - I believe it is a bug in SketchBook. It turns out my 2009 MacBook Pro does natively have Quartz Extreme / Core Image - all Macs of that vintage do and in fact Apple have stopped specifically mentioning that capability in the System Profiler because it's now redundant (and that's why I thought my Mac wasn't capable).
The issue is how Sketchbook determines if the Mac has Quartz Extreme / Core Image capability. I happen to have two USB DisplayLink monitors and a Wacom DTU-1631 hooked up to my MacBook Pro. Obviously I use the Wacom graphics tablet for my drawing and for better performance I run that through my mini-DisplayPort connector. The issue is that I have set the system menubar to be on one of the external monitors and they are driven via USB using DisplayLink drivers. If I change the system menubar to be on either the MacBook Pro LCD display or on the graphics tablet (connected via mini-DisplayPort) then I do not get the Sketchbook Pro error pertaining to Quartz Extreme / Core Image.
So it sounds like you just need to find an alternate way to decide if the Mac being used has Quartz Extreme / Core Image capability, because the way it's done now is not strictly correct. Hope this helps you!