[Bug 39294] iTunes 12 does not start anymore

[wine-bugs at winehq.org]

https://bugs.winehq.org/show_bug.cgi?id=39294

--- Comment #14 from Michael Müller <michael at fds-team.de> ---
(In reply to Austin English from comment #13)
> (In reply to Albert Flügel from comment #12)
> > err:winediag:init_driver_info Could not find GPU info for 1002:9715. I have
> > a Radeon HD 4250, is this a problem ?
> 
> That's a staging specific patch, but from a quick read of the patch it
> doesn't look like it should be. Michael/Sebastian?

We have patch in Wine Staging to ask Mesa for the PCI id and VRAM size of the
graphic card. Vanilla Wine uses the OpenGL renderer string to translate the
graphic card name but this does not work very well as Mesa often uses the same
string for multiple cards. Using the PCI id is therefore much more precise, but
obviously the list of cards in wined3d is not complete yet. If you see such a
message, this means that the matching of the PCI id failed and we fall back to
the method used by vanilla Wine. DirectX will now most probably report an
incorrect graphic card name for your setup.

For vanilla Wine this is a bigger problem since the VRAM size is also taken
from this translation table and games might change the graphic quality based on
this value. Wine Staging instead uses the VRAM size reported by Mesa and
ignores the hard coded one, so only the name is incorrect.

You can use our winecheck utility to find out which name is reported by
DirectX:
https://github.com/wine-compholio/wine-staging/wiki/Winecheck

I doubt that Wine would accept a patch to add this card unless it is possible
to distinguish the card via the OpenGL Renderer string.

Anyway, the problem is definitely unrelated to the crash.

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