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Old 04-26-09, 05:41 PM   #3
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Join Date: Jan 2003
Posts: 14
Default Re: no X display, kernel OOPS: nvidia-180 drivers, ubuntu 9.04 (2.6.28-11-generic ker

Originally Posted by zander View Post
Thank you for reporting this problem. In order to be able to use NvAGP, you will need to rebuild your kernel without CONFIG_GART_IOMMU. This will also avoid the Oops on your system. I will fix the CONFIG_GART_IOMMU=y case for future NVIDIA Linux graphics driver releases.
I passed 'iommu=off' to the kernel at boot, but the driver still failed to use NVAGP. Why is that?

Unfortunately CONFIG_GART_IOMMU is not trivially disabled on recent kernels. It is enabled by default on all x86_64 builds. I had to manually edit arch/x86/Kconfig to remove the 'if EMBEDDED' to give myself the option to disable it. I am compiling the new kernel now and will report back...
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