Lenovo T510 - No support for 1st gen Intel graphics? Boots only distorted installer

I'm trying to install 10.10 or 10.9 on a Lenovo T510 4384-FT7:

Core i5 520M

1St Gen Intel HD graphics

1366x768 display

I created USB sticks with Unibeast for both from original app store OSX sources.

I tried the following boot options on both 10.10 and 10.9, along with "Graphics Mode"=1366x768x32:

-v -x PCIRootUID=0 GraphicsEnabler=Yes

-v -x GraphicsEnabler=Yes

-v -x npci=x2000

-v -x GraphicsEnabler=No IGPEnabler=Yes

-v -x IGPEnabler=Yes

Without -x i get a crash - With -x and any of these options it ends like this: http://i.imgur.com/V8ogVuK.jpg

Any ideas?

I also have a second T510 with nvidia GPU which installed Yosemite fine (without sound and wifi but with working ethernet and gpu) - Is the 1st gen GPU simply not compatible?

submitted by WilliamSI
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What is missing? Please comment to help!

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