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Switch to ATI 4850 1GB after install on 9500GT?


derrick.bowles
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here are the system specs:

 

Gigabyte EP45-UD3L

Intel Core2Quad Q6600

4GB Ram

Nvidia 9500GT 512MB

 

 

I got Lion to install smoothly on this graphics card. I used Kakewalk because it said that my ATI card was supported. I could never get it to recognize the ATI card during install. It would hang at some point during the installation no matter what I tried.

 

So, I now have a fully working Lion install, but I would prefer to switch over to my ATI card. This Nvidia card was bought for super-cheap so I could do a little testing with OS X, but I never intended to use it full time. My ATI card is my preferred card.

 

The Nvidia card is currently using an EFI string to enable all features. Can anyone give me a next step to get my ATI card installed and working? My assumption is that I'll need to delete the EFI string, install something for the ATI card, and maybe get rid of Kakewalk? The truth is that I had never used Kakewalk before this, and I don't know if it is the best bootloader for me to be using.

 

Any help is greatly appreciated.

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Fingers crossed, should be fairly simple.

 

Do these all in 1 session (i.e., don't reboot/shutdown until everything is done).

 

Keep your 9500GT installed.

 

add

<key>GraphicsEnabler</key>

<string>Yes</string>

 

and

 

remove your EFI-id

 

in /Extra/...boot.plist

 

-then-

 

download Zeus

http://www.groths.org/?page_id=108

 

click Driver tab.

choose ATI 4000 series,

select Lion 10.7.1

click Download

 

if you get an error for whatever reason, just run the QECI_1071.pkg file manually

 

Once all of this is done, shutdown and swap cards.

 

 

When you boot, do a -v for a bit, make sure you don't see any errors.

 

 

 

--

If you start up in 1024x768, double check your boot.plist for GraphicsEnabler=Yes

If you get a kernel panic or a freeze, boot in -x until you get things sorted out

 

If none of this works, download/install Chimera 1.5.4 and use this as your boot loader rather than kakewalk. Keep the above steps (GE=Yes, QECIpkg installed)

 

 

 

EP45-UD3P w/ 4890 (formerly 9800GT)

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don't change the card! your pc may become extremely instable and it can explode across the wall. specially on ati cards. it's widely known, I ask me why you place a similar question..... use google!

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My 4850 didn't work OOTB had to use the package to get QE/CI working and finally with dual monitors. GB crashes because of using the default FB which I'm not sure is the case for you guys but I can manually specify a working FB using aty_init when I need to run GB.

 

btw I don't use GE=yes

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