Bug 21752

Summary:	2.6.31 regression - poweroff doesn't - HP DV9285 Laptop
Product:	ACPI	Reporter:	Helder Meneses (helder.meneses)
Component:	Power-Off	Assignee:	acpi_power-off
Status:	REJECTED INSUFFICIENT_DATA
Severity:	normal	CC:	lenb, rui.zhang, yakui.zhao
Priority:	P1
Hardware:	All
OS:	Linux
Kernel Version:	2.6.34	Subsystem:
Regression:	Yes	Bisected commit-id:

Description Helder Meneses 2010-11-02 09:56:03 UTC

I have a Laptop HP DV9285, and sometimes my hotkeys stop working and when this happens i cannot turn off computer completly, it starts to shutdown and never turns off.

This issue started in kernel > 2.6.31. Until 2.6.31 my computer worked flawlessly, with the hotkeys working well and i would shutdown completly. upon 2.6.31 like in mandriva 2010.1 with 2.6.33 and in opensuse with 2.6.34 and with ubuntu with 2.6.35 sometimes the hotkeys stop working and when this happens i cannot turn off computer.

Comment 1 ykzhao 2010-11-24 00:40:19 UTC

From the description it seems that the 2.6.31 kernel can work on your box. 
will you please use the git-bisect to identify which commit causes the issue?

Thanks.

Comment 2 Len Brown 2010-11-30 03:38:33 UTC

Did 2.6.30 work fine?
Can you try the 2.6.30 ec driver in your 2.6.31 source tree?
(ie. limit the bisect to drivers/acpi/ec.c)

Upon the failure, do you see anything in dmesg?
does /proc/interrupts show that acpi interrupts are being
received when you press the power button?

Comment 3 Zhang Rui 2010-12-27 01:54:45 UTC

bug closed as there is no response from the bug reporter for more than a month.
Please feel free to re-open it if the problem still exists in the latest upstream kernel, say 2.6.37-rc7 and you can provide the info requested in comment #1 and #2.