[Bug 95736] [SNB bisected] *ERROR* uncleared fifo underrun on pipe A

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=95736

--- Comment #32 from Fabian Henze <flyser42 at gmx.de> ---
(In reply to François Guerraz from comment #31)
> It was reported that some fifo underrund problems can be caused by enabling
> CONFIG_INTEL_IOMMU_DEFAULT_ON=y (see
> https://bugs.archlinux.org/task/55629#comment161154).
> I notice that Fabian's configuration has this flag set...
> Could that really be the problem?

Setting intel_iommu=igfx_off indeed fixed it.

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