[Bug 102586] System freeze with Kernels > 4.11.x (freeze on 4.12.x and 4.13.x)

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=102586

--- Comment #15 from Ville Syrjala <ville.syrjala at linux.intel.com> ---
(In reply to baggins from comment #14)
> Created attachment 135491 [details]
> dmesg from ssh into machine when frozen

[ 1075.306230] DC6 already programmed to be enabled.
...
[ 1075.306703] [drm:gen9_set_dc_state [i915]] *ERROR* DC state mismatch (0x0 ->
0x2)
...
[16931.086359] [drm] GPU HANG: ecode 9:0:0xfed7fffe, in Xorg [1392], reason:
Hang on rcs, action: reset
[16931.086388] drm/i915: Resetting chip after gpu hang
[16931.788779] [drm:gen8_reset_engines [i915]] *ERROR* rcs: reset request
timeout
[16931.788826] [drm:i915_reset [i915]] *ERROR* Failed to reset chip: -5

So that looks like the DMC firmware fail, and then the GPU died. Unfortunately
I can't find the appropriate bug for it right now.

To (hopefully) fix that one would need the following patch:
https://patchwork.freedesktop.org/series/33022/

And get the KBL DMC 1.04 firmware from:
https://github.com/anushasr/linux-firmware.git

Doesn't look like this is the problem for the other people here though.

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