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Old 10-28-11, 02:11 AM   #1
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Join Date: Aug 2007
Posts: 43
Default [BUG] nvidia-290.03 doesn't like IOMMU/DMAR features


I've a brand new Dell M6600 with a Quadro 4000M in it; X hangs during startup and the X driver
complains with the following:
[ 615.863] (EE) NVIDIA(0): EVO Push buffer channel allocation failed
[ 615.863] (EE) NVIDIA(0): *** Aborting ***
[ 615.863] (EE) NVIDIA(0): Failed to allocate EVO DMA push buffer
[ 615.863] (EE) NVIDIA(0): *** Aborting ***

I "fixed" it by disabling all IOMMU/DMAR and INTR_REMAP features in the kernel.
Please have a look at this, as I'd like to make use of the VT features.
Attached a bug report in the non-working case.

Attached Files
File Type: gz nvidia-bug-report.log.gz (42.5 KB, 53 views)
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