On Sun, 2013-02-24 at 17:13 +0100, Pierre AUSSAGUEL wrote:
Le 24/02/2013 08:08, Ben Hutchings a écrit :
[...]
If we can't come up with a workaround, this should be mentioned in the
release notes to prevent a regression on upgrade. Please feel free to
remind me in that case so I can come up with some wording (though I
also wouldn't mind if someone else does).
"Graphics rendering may be very slow on Intel 'Ironlake M' GPUs (PCI ID
8086:0046) when an IOMMU (VT-d) is enabled. The IOMMU functionality can
be disabled for the GPU by adding the kernel parameter
'intel_iommu=igfx_off'."
Do you want that I test with intel_iommu=igfx_off in 3.7, or even in 3.2 ?
Do you want that I test too intel_iommu=off in 3.2 ?
For now, the system works well with 3.7 but that would be better to use
a stable kernel for sure !
Please test intel_iommu=igfx_off in both 3.7 and the 3.2+drm kernel
linked from <http://bugs.debian.org/687442#131>.
(The next upload to unstable will include those drm changes.)
Ben.