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

[bugzilla-daemon at freedesktop.org]

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

--- Comment #9 from Lakshmi <lakshminarayana.vudum at intel.com> ---
(In reply to Arcadiy Ivanov from comment #8)
> 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])

Can you verify this issue on latest drm-tip:
https://cgit.freedesktop.org/drm-tip and send dmesg from boot with
drm.debug=0x1e log_buf_len=4M?

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