[Bug 109949] [skl] Hard lockup (Freeze) after reset failure

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=109949

--- Comment #8 from Arcadiy Ivanov <arcadiy at ivanov.biz> ---
I'm having the same issue with Dell Precision Mobile 7510, Fedora 30, kernel
5.0.9. 

Details of kernel configuration are here:
https://www.ivanov.biz/2019/howto-optimize-intel-graphics-performance-fedora-kde-linux-laptop/

The hard freeze prevents me from getting any crash information whatsoever, but
it too occurs with many Chromium tabs, albeit only with one video playing. The
failure is sporadic.

[    0.000000] Command line:
BOOT_IMAGE=(hd0,gpt2)/vmlinuz-5.0.9-301.fc30.x86_64
root=/dev/mapper/fedora-root ro resume=/dev/mapper/fedora-swap
rd.lvm.lv=fedora/root rd.lvm.lv=fedora/swap rootflags=discard rhgb
rd.driver.blacklist=nouveau i915.enable_dc=2 i915.disable_power_well=0
i915.enable_fbc=1 i915.enable_guc=3 i915.enable_dpcd_backlight=1 l1tf=flush
[    0.639085] Kernel command line:
BOOT_IMAGE=(hd0,gpt2)/vmlinuz-5.0.9-301.fc30.x86_64
root=/dev/mapper/fedora-root ro resume=/dev/mapper/fedora-swap
rd.lvm.lv=fedora/root rd.lvm.lv=fedora/swap rootflags=discard rhgb
rd.driver.blacklist=nouveau i915.enable_dc=2 i915.disable_power_well=0
i915.enable_fbc=1 i915.enable_guc=3 i915.enable_dpcd_backlight=1 l1tf=flush
[    3.736491] i915 0000:00:02.0: vgaarb: changed VGA decodes:
olddecodes=io+mem,decodes=none:owns=io+mem
[    3.736778] [drm] Finished loading DMC firmware i915/skl_dmc_ver1_27.bin
(v1.27)
[    3.748478] [drm] HuC: Loaded firmware i915/skl_huc_ver01_07_1398.bin
(version 1.7)
[    3.758925] [drm] GuC: Loaded firmware i915/skl_guc_ver9_33.bin (version
9.33)
[    3.770134] i915 0000:00:02.0: GuC firmware version 9.33
[    3.770138] i915 0000:00:02.0: GuC submission enabled
[    3.770139] i915 0000:00:02.0: HuC enabled
[    3.771606] [drm] Initialized i915 1.6.0 20181204 for 0000:00:02.0 on minor
0
[    3.815092] i915 0000:00:02.0: fb0: inteldrmfb frame buffer device
[    5.483490] snd_hda_intel 0000:00:1f.3: bound 0000:00:02.0 (ops
i915_audio_component_bind_ops [i915])

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