[Bug 111805] Constant "Resetting rcs0 for hang on rcs0" and machine lockup

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=111805

--- Comment #10 from Kenneth C <kenny at panix.com> ---
It happened again, was able to get error state (I had to use "Sysrq-K" to kill
off Kwin/Plasma then I could log in again):

----
[Tue Oct  1 14:28:09 2019] i915 0000:00:02.0: GPU HANG: ecode 9:1:0x00000000,
hang on rcs0
[Tue Oct  1 14:28:09 2019] GPU hangs can indicate a bug anywhere in the entire
gfx stack, including userspace.
[Tue Oct  1 14:28:09 2019] Please file a _new_ bug report on
bugs.freedesktop.org against DRI -> DRM/Intel
[Tue Oct  1 14:28:09 2019] drm/i915 developers can then reassign to the right
component if it's not a kernel issue.
[Tue Oct  1 14:28:09 2019] The GPU crash dump is required to analyze GPU hangs,
so please always attach it.
[Tue Oct  1 14:28:09 2019] GPU crash dump saved to /sys/class/drm/card0/error
[Tue Oct  1 14:28:09 2019] i915 0000:00:02.0: Resetting rcs0 for hang on rcs0
[Tue Oct  1 14:28:09 2019] [drm:gen8_reset_engines [i915]] *ERROR* rcs0 reset
request timed out: {request: 00000001, RESET_CTL: 00000001}
[Tue Oct  1 14:28:09 2019] i915 0000:00:02.0: Resetting chip for hang on rcs0
[Tue Oct  1 14:28:09 2019] [drm] GuC communication stopped
[Tue Oct  1 14:28:09 2019] [drm:gen8_reset_engines [i915]] *ERROR* rcs0 reset
request timed out: {request: 00000001, RESET_CTL: 00000001}
[Tue Oct  1 14:28:09 2019] [drm:gen8_reset_engines [i915]] *ERROR* rcs0 reset
request timed out: {request: 00000001, RESET_CTL: 00000001}
[Tue Oct  1 14:28:09 2019] [drm] GuC communication enabled
[Tue Oct  1 14:28:09 2019] i915 0000:00:02.0: GuC firmware
i915/kbl_guc_33.0.0.bin version 33.0 submission:disabled
[Tue Oct  1 14:28:09 2019] i915 0000:00:02.0: HuC firmware
i915/kbl_huc_4.0.0.bin version 4.0 authenticated:yes
[Tue Oct  1 14:28:15 2019] i915 0000:00:02.0: Resetting rcs0 for hang on rcs0
[Tue Oct  1 14:28:23 2019] i915 0000:00:02.0: Resetting rcs0 for hang on rcs0
[Tue Oct  1 14:28:25 2019] i915 0000:00:02.0: Resetting rcs0 for hang on rcs0
[Tue Oct  1 14:28:27 2019] i915 0000:00:02.0: Resetting rcs0 for hang on rcs0
[Tue Oct  1 14:28:29 2019] i915 0000:00:02.0: Resetting rcs0 for hang on rcs0
[Tue Oct  1 14:28:31 2019] i915 0000:00:02.0: Resetting rcs0 for hang on rcs0
[Tue Oct  1 14:28:33 2019] i915 0000:00:02.0: Resetting rcs0 for hang on rcs0
[Tue Oct  1 14:28:35 2019] i915 0000:00:02.0: Resetting rcs0 for hang on rcs0
[Tue Oct  1 14:28:37 2019] i915 0000:00:02.0: Resetting rcs0 for hang on rcs0
[Tue Oct  1 14:28:39 2019] i915 0000:00:02.0: Resetting rcs0 for hang on rcs0
[Tue Oct  1 14:28:41 2019] i915 0000:00:02.0: Resetting rcs0 for hang on rcs0
[Tue Oct  1 14:28:43 2019] i915 0000:00:02.0: Resetting rcs0 for hang on rcs0
[Tue Oct  1 14:28:45 2019] i915 0000:00:02.0: Resetting rcs0 for hang on rcs0
[Tue Oct  1 14:28:47 2019] i915 0000:00:02.0: Resetting rcs0 for hang on rcs0
[Tue Oct  1 14:28:49 2019] i915 0000:00:02.0: Resetting rcs0 for hang on rcs0
[Tue Oct  1 14:28:51 2019] i915 0000:00:02.0: Resetting rcs0 for hang on rcs0
[Tue Oct  1 14:28:53 2019] i915 0000:00:02.0: Resetting rcs0 for hang on rcs0
[Tue Oct  1 14:28:55 2019] i915 0000:00:02.0: Resetting rcs0 for hang on rcs0
[Tue Oct  1 14:28:57 2019] i915 0000:00:02.0: Resetting rcs0 for hang on rcs0
[Tue Oct  1 14:28:59 2019] i915 0000:00:02.0: Resetting rcs0 for hang on rcs0
[Tue Oct  1 14:29:01 2019] i915 0000:00:02.0: Resetting rcs0 for hang on rcs0
[Tue Oct  1 14:29:03 2019] i915 0000:00:02.0: Resetting rcs0 for hang on rcs0
[Tue Oct  1 14:29:05 2019] i915 0000:00:02.0: Resetting rcs0 for hang on rcs0
[Tue Oct  1 14:29:07 2019] i915 0000:00:02.0: Resetting rcs0 for hang on rcs0
[Tue Oct  1 14:29:09 2019] i915 0000:00:02.0: Resetting rcs0 for hang on rcs0
[Tue Oct  1 14:29:11 2019] i915 0000:00:02.0: Resetting rcs0 for hang on rcs0
[Tue Oct  1 14:29:13 2019] i915 0000:00:02.0: Resetting rcs0 for hang on rcs0
[Tue Oct  1 14:29:15 2019] i915 0000:00:02.0: Resetting rcs0 for hang on rcs0
[Tue Oct  1 14:29:17 2019] i915 0000:00:02.0: Resetting rcs0 for hang on rcs0
[Tue Oct  1 14:29:19 2019] i915 0000:00:02.0: GPU recovery timed out,
cancelling all in-flight rendering.
[Tue Oct  1 14:29:19 2019] [drm] GuC communication stopped
[Tue Oct  1 14:29:19 2019] i915 0000:00:02.0: Resetting chip for hang on rcs0
[Tue Oct  1 14:29:19 2019] [drm] GuC communication enabled
[Tue Oct  1 14:29:19 2019] i915 0000:00:02.0: GuC firmware
i915/kbl_guc_33.0.0.bin version 33.0 submission:disabled
[Tue Oct  1 14:29:19 2019] i915 0000:00:02.0: HuC firmware
i915/kbl_huc_4.0.0.bin version 4.0 authenticated:yes
[Tue Oct  1 14:30:00 2019] sysrq: Keyboard mode set to system default
----

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