https://bugzilla.kernel.org/show_bug.cgi?id=33872
Summary: System Hangs on Shutdown
Product: ACPI
Version: 2.5
Platform: All
OS/Version: Linux
Tree: Mainline
Status: NEW
Severity: normal
Priority: P1
Component: Power-Off
AssignedTo: acpi_power-...@kernel-bugs.osdl.org
ReportedBy: diego.vi...@gmail.com
Regression: No
My System:
* ThinkPad T510 (model 4313CTO)
* Arch Linux x86-64
* Linux 2.6.38-ARCH
* Intel Core i7-620M Processor (2.66GHz, 4MB L3, 1066MHz FSB)
* 4 GB PC3-10600 DDR3 SDRAM 1333MHz SODIMM Memory (1 DIMM)
Steps to Reproduce:
* Install Arch Linux x86-64
* Install laptop-mode-tools and enable it on DAEMONS under /etc/rc.conf
* reboot and then shutdown.
Actual Results:
Whenever I shutdown the machine with laptop-mode enabled on rc.conf, the system
would lock/freeze with "Disabling IRQ #19" and similar messages. I thought this
was a problem with my hardware until I discovered that other people are having
this problem on the Arch Linux forums. See here:
https://bbs.archlinux.org/viewtopic.php?id=113985
People on the Arch Linux forums have notified about this problem to the
laptop-mode-tools maintainer but the maintainer in question claimed that this
is a kernel bug. See here:
http://mailman.samwel.tk/pipermail/laptop-mode/2011-April/000433.html
I believe this is a kernel bug, since I was able to reproduce the issue without
laptop-mode-tools at all, simply by changing the CPU governor to on-demand
followed by shutdown. After I did that, I reproduced the same effect.
I have tried to upgrade the BIOS on my ThinkPad from version 1.41 to 1.43 with
no success. See logs and pictures about this issue on the attachment of this
report.
I have laptop-mode-tools enabled with the default modules, no additional
configuration has been made. Additionally, I also noticed that the discussion
here looks related to this problem: https://lkml.org/lkml/2011/4/4/121
Expected Results:
System shutdowns fine.
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