[Bug 94256] [i915][gen4.5][4.5.0-rc2] Kernel panic on bootup - gen5_assert_iir_is_zero+0x42/0xa0 [i915]

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=94256

Imre Deak <imre.deak at intel.com> changed:

           What    |Removed                     |Added
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                 CC|                            |imre.deak at intel.com

--- Comment #1 from Imre Deak <imre.deak at intel.com> ---
Created attachment 121914
  --> https://bugs.freedesktop.org/attachment.cgi?id=121914&action=edit
fix-qemu-south-bridge-detection

The driver misdetects PCH on your machine.

Could you provide a log booting with drm.debug=14? Also the output of lspci -nv
(booting with nomodeset)?

Attached is a patch from -rc3 that fixes a similar issue, please give it a try.

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