Bug 11560

Summary:	[REGRESSION] 2.6.26.4 killed Suspend to RAM at my laptop
Product:	ACPI	Reporter:	Cijoml Cijomlovic Cijomlov (cijoml)
Component:	Power-Off	Assignee:	acpi_power-off
Status:	CLOSED CODE_FIX
Severity:	high
Priority:	P1
Hardware:	All
OS:	Linux
Kernel Version:	2.6.27 started with 2.6.26.4	Subsystem:
Regression:	Yes	Bisected commit-id:

Description Cijoml Cijomlovic Cijomlov 2008-09-13 01:13:08 UTC

Latest working kernel version: 2.6.26.3
Earliest failing kernel version:
Distribution: Debian testing
Hardware Environment: Pentium M 
Software Environment: Debian testing, vanilla 2.6.26.4
Problem Description:

in 2.6.26.3 suspend to RAM worked correctly, with 2.6.26.4 laptop just switch off LCD light, but remains working - can reboot it with (ctrl-alt-del)

Steps to reproduce:

Boot kernel try suspend

Comment 1 Zhang Rui 2008-09-15 18:59:29 UTC

the network still works, doesn't it?
Please attach the dmesg output when LCD is switched off.

Comment 2 Zhang Rui 2008-09-22 00:59:02 UTC

Cijoml, any update?

Comment 3 Cijoml Cijomlovic Cijomlov 2008-09-22 01:03:15 UTC

later today I was out over weekend ;)

Comment 4 Zhang Rui 2008-09-26 20:02:06 UTC

ping cijoml, :)

Comment 5 Cijoml Cijomlovic Cijomlov 2008-10-11 13:23:47 UTC

Hi Zhang, just tested (wifi connection) and laptop doesn't respond. I tried final 2.6.27 and it is same...

Comment 6 Zhang Rui 2008-10-30 00:49:45 UTC

so the laptop fails to suspend.
As this is a regression between 2.6.26.3 nad 2.6.26.4
it would be great if you can run git-bisect to find out which commit introduces this bug.

Comment 7 Cijoml Cijomlovic Cijomlov 2008-10-30 12:26:44 UTC

Can you provide me how?

Comment 8 Zhang Rui 2008-10-30 17:51:10 UTC

http://www.lesswatts.org/projects/acpi/debug.php
Debug: How to Isolate Linux ACPI Issues

there are several links about how to use git-bisect. :)

Comment 9 Zhang Rui 2008-11-24 22:41:31 UTC

ping cijoml,
any update?

Comment 10 Cijoml Cijomlovic Cijomlov 2008-11-25 11:15:55 UTC

This was fixed in 2.6.27.7 thank you guys!