[Bug 95063] [SKL] random system hang with RC6 enabled

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=95063

--- Comment #22 from Elio <elio.martinez.monroy at intel.com> ---
(In reply to Esokrarkose from comment #20)
> Happened to me too on an XPS 13 9360 kabylake:
> 
> Sep  3 22:02:20 debian kernel: [185417.238668] [drm] GPU HANG: ecode
> 9:0:0xfffffffe, in gnome-shell [1226], reason: Hang on render ring, action:
> reset
> Sep  3 22:02:20 debian kernel: [185417.238672] [drm] GPU hangs can indicate
> a bug anywhere in the entire gfx stack, including userspace.
> Sep  3 22:02:20 debian kernel: [185417.238673] [drm] Please file a _new_ bug
> report on bugs.freedesktop.org against DRI -> DRM/Intel
> Sep  3 22:02:20 debian kernel: [185417.238675] [drm] drm/i915 developers can
> then reassign to the right component if it's not a kernel issue.
> Sep  3 22:02:20 debian kernel: [185417.238676] [drm] The gpu crash dump is
> required to analyze gpu hangs, so please always attach it.
> Sep  3 22:02:20 debian kernel: [185417.238678] [drm] GPU crash dump saved to
> /sys/class/drm/card0/error
> Sep  3 22:02:20 debian kernel: [185417.238779] drm/i915: Resetting chip
> after gpu hang
> Sep  3 22:02:20 debian kernel: [185417.238850] [drm] RC6 on
> Sep  3 22:02:20 debian kernel: [185417.258102] [drm] GuC firmware load
> skipped
> 
> Unfortunately I could not save /sys/class/drm/card0/error as this resulted
> in a kernel panic.
> 
> lspci -vnn | grep VGA -A 12:
> 
> 00:02.0 VGA compatible controller [0300]: Intel Corporation HD Graphics 620
> [8086:5916] (rev 02) (prog-if 00 [VGA controller])
> 	Subsystem: Dell HD Graphics 620 [1028:075b]
> 	Flags: bus master, fast devsel, latency 0, IRQ 278
> 	Memory at db000000 (64-bit, non-prefetchable) [size=16M]
> 	Memory at 90000000 (64-bit, prefetchable) [size=256M]
> 	I/O ports at f000 [size=64]
> 	[virtual] Expansion ROM at 000c0000 [disabled] [size=128K]
> 	Capabilities: <access denied>
> 	Kernel driver in use: i915
> 	Kernel modules: i915
> 
> 00:04.0 Signal processing controller [1180]: Intel Corporation Skylake
> Processor Thermal Subsystem [8086:1903] (rev 02)
> 	Subsystem: Dell Skylake Processor Thermal Subsystem [1028:075b]

It seems that you are missing the firmware (DMC, GuC, HuC), please check
available firmware versions in 01.org/download

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