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Bug 1063

Summary: Dynamic Card Switch causes Havok
Product: SDL Reporter: Armin Ronacher <armin.ronacher>
Component: videoAssignee: Ryan C. Gordon <icculus>
Status: RESOLVED ENDOFLIFE QA Contact: Sam Lantinga <slouken>
Severity: critical    
Priority: P2 CC: adam, jspradlin
Version: 1.2.14   
Hardware: x86_64   
OS: Mac OS X 10.6   

Description Armin Ronacher 2010-10-11 09:44:18 UTC 
On Snow Leopard with a macbook pro that has two graphics devices the following error is printed to stderr multiple times a second:

Wed Oct  6 02:35:27 nausicaa.local TestApp[92464] <Warning>:
CGDisplayIsCaptured: Fixing up display ID 0x4272ec2 for offline
mux head to 0x4272ec0

When I force the graphics device to be either Nvidia or Intel it works as expected.

I think SDL has to be made aware of a changing graphics device, but I'm unsure how this is supposed to work.  It might be sufficient to switch to Nvidia mode earlier than currently.
Comment 1 Jen Spradlin 2011-04-12 20:10:41 UTC 
Thank you for your bug report!

We're busy working on getting SDL 1.3 ready for a high quality release, and want to make sure as many things are fixed there as possible.
Could you check to see if your bug is resolved by the latest SDL 1.3 snapshot?
http://www.libsdl.org/tmp/SDL-1.3.zip

Thanks!
Comment 2 Armin Ronacher 2011-04-13 00:03:57 UTC 
The error still occurs.  However the spamming stops after a while so it's less critical than it was before.
Comment 3 Adam M. 2014-05-12 21:40:46 UTC 
This should not be marked as WAITING because the question was answered years ago.
Comment 4 Sam Lantinga 2014-06-22 17:11:46 UTC 
Hey Ryan, do you have any systems with this configuration?
Comment 5 Ryan C. Gordon 2015-08-25 09:38:21 UTC 
Hello, and sorry if you're getting several copies of this message by email, since we are closing many bugs at once here.

We have decided to mark all SDL 1.2-related bugs as RESOLVED ENDOFLIFE, as we don't intend to work on SDL 1.2 any further, but didn't want to mark a large quantity of bugs as RESOLVED WONTFIX, to clearly show what was left unattended to and make it easily searchable.

Our current focus is on SDL 2.0.

If you are still having problems with an ENDOFLIFE bug, your absolute best option is to move your program to SDL2, as it will likely fix the problem by default, and give you access to modern platforms and tons of super-cool new features.

Failing that, we _will_ accept small patches to fix these issues, and put them in revision control, although we do not intend to do any further official 1.2 releases.

Failing that, please feel free to contact me directly by email (icculus@icculus.org) and we'll try to find some way to help you out of your situation.

Thank you,
--ryan.