[Bug 96692] drm/i915: kernel hang during booting up

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=96692

--- Comment #4 from zhiquan.lee at gmail.com ---
Hi Jani,

The machine is hung, and also the screen is black.

Do you have any idea to gather more information?

I've already enabled below kernel configurations and waited for more than 3
hours, the kernel is still hanging there, no panic was triggered by lockup
debugging.

# Kernel config
CONFIG_LOCKUP_DETECTOR=y
CONFIG_BOOTPARAM_HARDLOCKUP_PANIC=y
CONFIG_BOOTPARAM_SOFTLOCKUP_PANIC=y

CONFIG_DETECT_HUNG_TASK=y
CONFIG_DEFAULT_HUNG_TASK_TIMEOUT=120
CONFIG_BOOTPARAM_HUNG_TASK_PANIC=y

CONFIG_WQ_WATCHDOG=y

CONFIG_DEBUG_RT_MUTEXES=y
CONFIG_DEBUG_SPINLOCK=y
CONFIG_DEBUG_MUTEXES=y
CONFIG_DEBUG_WW_MUTEX_SLOWPATH=y
CONFIG_DEBUG_LOCK_ALLOC=y
CONFIG_PROVE_LOCKING=y
CONFIG_DEBUG_ATOMIC_SLEEP=y
CONFIG_DEBUG_LOCKING_API_SELFTESTS=y

Thanks,
Leon

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