Sorry for the delay, this was not my computer but Marta's one.
This computer was bought recently and installed directly with Ubuntu 16.04 in
dual boot with Windows.
So no previous kernel version was tested.
Even Ubuntu 16.04 CD install media needed kernel parameter acpi=off to boot.
I just tried kernel 4.6 rc7 and problem persist.
I had also tried upstream kernel version 4.5 with the same results.
Only with acpi=off the system is usable.
Any other option:
Lot of
NMI watchdog: Watchdog detected Hard LOCKUP on cpu 0
other CPU numbers also seen.
System present LightDM after more than 15min.
Desktop not usable due to constant lock-up (detected because mouse pointer and
user name input stop blinking)
Does not had the patience to try to log in after waiting more than 20 minutes.
** Changed in: linux (Ubuntu)
Status: Incomplete => Confirmed
** Tags added: kernel-bug-exists-upstream
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https://bugs.launchpad.net/bugs/1580345
Title:
LG 22V240 all in one PC with ACPI problems
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