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I'm using ubuntu 13.04 and got VERY bad 3d performance with intel ironlake comparing with a windows installation.

Is there any way I can improve this?

I already tried various paramaters of the i915 kernel module, but that didn't help much... SNA is already enabled.

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2 Answers 2

Reset to default
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Add the following option in grub file

i915.semaphores=1

Then

 sudo update-grub

Mine is 

 GRUB_CMDLINE_LINUX_DEFAULT="quiet splash i915.lvds_downclock=1 drm.vblankoffdelay=1  i915.semaphores=1"

Try adding this to /etc/environment

 CLUTTER_PAINT=disable-clipped-redraws:disable-culling

[RESOLVED] Poor performance on Ironlake compared to old Intel GPU Intel Ironlake OpenGL Performance On Mesa 9.1

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Download and install the official graphics drivers for all intel processors. I had some minor problems with some games but this solved that issue.

https://01.org/linuxgraphics/

These drivers are given by Intel Open Source Technology Center and are always updated. Don't forget to add their source in your source list, to always get the updated drivers.

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