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<b><a class="bz_bug_link
bz_status_NEEDINFO "
title="NEEDINFO - drm/i915: kernel hang during booting up"
href="https://bugs.freedesktop.org/show_bug.cgi?id=96692#c4">Comment # 4</a>
on <a class="bz_bug_link
bz_status_NEEDINFO "
title="NEEDINFO - drm/i915: kernel hang during booting up"
href="https://bugs.freedesktop.org/show_bug.cgi?id=96692">bug 96692</a>
from <span class="vcard"><a class="email" href="mailto:zhiquan.lee@gmail.com" title="zhiquan.lee@gmail.com">zhiquan.lee@gmail.com</a>
</span></b>
<pre>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</pre>
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