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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - [ilk regression] 3.7.x corrupt console image, hard hang starting X"
href="https://bugs.freedesktop.org/show_bug.cgi?id=60391#c22">Comment # 22</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW --- - [ilk regression] 3.7.x corrupt console image, hard hang starting X"
href="https://bugs.freedesktop.org/show_bug.cgi?id=60391">bug 60391</a>
from <span class="vcard"><a class="email" href="mailto:daniel@ffwll.ch" title="Daniel Vetter <daniel@ffwll.ch>"> <span class="fn">Daniel Vetter</span></a>
</span></b>
<pre>(In reply to <a href="show_bug.cgi?id=60391#c21">comment #21</a>)
<span class="quote">> I built stock 3.7.7 with IOMMU turned on, and patched, and
> booted with and without the suggested option. It booted to
> full X both times. Without the patch, and built with IOMMU on,
> it fails reliably. Without the patch, and without IOMMU, it
> boots and runs X with no apparent problems.
>
> IOMMU turned on means:
>
> # CONFIG_CALGARY_IOMMU is not set
> CONFIG_IOMMU_HELPER=y
> CONFIG_IOMMU_API=y
> CONFIG_IOMMU_SUPPORT=y
> # CONFIG_AMD_IOMMU is not set
> CONFIG_INTEL_IOMMU=y
> CONFIG_INTEL_IOMMU_DEFAULT_ON=y
> CONFIG_INTEL_IOMMU_FLOPPY_WA=y
> # CONFIG_IOMMU_STRESS is not set</span >
Have you also tested what happens with an IOMMU-enable kernel, but adding
intel_iommu=igfx_off on the kernel cmdline? That is a slightly different mode
of "IOMMU disabled" which we need to test separately.
<span class="quote">> This is not to say there are no problems. The 3.6 and 3.7
> kernels are prone to freezing, with no mouse pointer motion,
> no response to keyboard input, and no response to ping, about
> once a week on this machine, but I don't know how to get any
> diagnostics out when it happens.</span >
Should be fixed in latest stable updates, see <a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED FIXED - [ilk regression] gpu hangs on ironlake with 3.6 + -next + -fixes code"
href="show_bug.cgi?id=55984">bug #55984</a></pre>
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