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General discussion (archive)2011 iMac and ATI Drivers!!!! Someone please help!(3 posts)(3 posts)
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Posted May 19, 2011
I've about exhausted my options it seems. Please don't flame, yes I know owning a custom-built PC would be cheaper and easier, unfortunately I'm tied to Mac OSX for multiple reasons...

Regarding Bootcamp:
Despite every possible attempt, I have yet to successfully install mobility ATI drivers on my 2011 27" 3.4 GHz ATI Radeon HD 6970m 2GB iMac.

With my mid-2010 iMac I had no problem uninstalling the bootcamp ATI drivers via Device manager, cleaning the registry, and installing the 5xxx series mobility drivers available for Windows 7, 64-bit on ATI's website. For some reason, I keep getting an error saying essentially graphic adapter does not support this. I'm trying to run Witcher 2 with little success as runs around 20-30 fps even on ugly/low settings w/ no ubersampling etc. etc. at 720p. I'm hoping the 11.5 catalyst drivers would at least make it playable. What's more, I'm worried the hotfix update they're planning will not apply to bootcamp drivers.

Does anyone know anything about this?
Post edited May 19, 2011 by swarleyb
Posted May 20, 2011
ATI drivers for a generic 6970m aren't made for the iMac 6970m under Bootcamp. This comes up pretty often when you're running Windows on Apple proprietary hardware.

The iMac drivers are available here: http://support.amd.com/us/gpudownload/Pages/bootcamp-win7.aspx

It's driver 8.812 (Catalyst 11.1). That's probably not what you were hoping for.

Some have gotten generic drivers to work with Apple's proprietary stuff, either by unpacking the driver and then using Device Manager to install it (rather than using the installer), or by hacking the .inf file so the driver thinks your GPU isn't a stranger. This is beyond the sort of action I'm comfortable in advising, even if it is easy to roll back driver changes.
Posted May 20, 2011
avatar
swarleyb: I've about exhausted my options it seems. Please don't flame, yes I know owning a custom-built PC would be cheaper and easier, unfortunately I'm tied to Mac OSX for multiple reasons...

Regarding Bootcamp:
Despite every possible attempt, I have yet to successfully install mobility ATI drivers on my 2011 27" 3.4 GHz ATI Radeon HD 6970m 2GB iMac.

With my mid-2010 iMac I had no problem uninstalling the bootcamp ATI drivers via Device manager, cleaning the registry, and installing the 5xxx series mobility drivers available for Windows 7, 64-bit on ATI's website. For some reason, I keep getting an error saying essentially graphic adapter does not support this. I'm trying to run Witcher 2 with little success as runs around 20-30 fps even on ugly/low settings w/ no ubersampling etc. etc. at 720p. I'm hoping the 11.5 catalyst drivers would at least make it playable. What's more, I'm worried the hotfix update they're planning will not apply to bootcamp drivers.

Does anyone know anything about this?
I've been reading in several places that some people (with standard Windows PCs) have noted problems with graphical optimization of the Witcher 2 engine and their graphics cards and have an inability to run the game smoothly on otherwise high-end machines. So I don't think it is a problem specific to your drivers or that this is a problem that updating the drivers will fix, but rather this is problem with a general class of graphics cards. I would say wait for the hotfix and see what develops ... is there a reason you think the hotfix won't help your drivers particularly?
Post edited May 20, 2011 by crazy_dave
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This is my favourite topic
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General discussion (archive)2011 iMac and ATI Drivers!!!! Someone please help!(3 posts)(3 posts)
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