linux-kernel - 2.6.21-rc1: T60 ACPI issues

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Message-ID: <20070801135820.GA8266@mellanox.co.il>
Date:	Wed, 1 Aug 2007 16:58:20 +0300
From:	"Michael S. Tsirkin" <mst@....mellanox.co.il>
To:	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	len.brown@...el.com, linux-acpi@...r.kernel.org,
	Ingo Molnar <mingo@...e.hu>, mingo@...hat.com,
	linux-pm@...ux-foundation.org
Subject: 2.6.21-rc1: T60 ACPI issues

Hi!
ACPI appears to have been broken with 2.6.23-rc1 on my T60
Userspace from ubuntu dapper.

1. During boot, I see a lot of messages like this:
[   41.034204] acpi LNXSYSTM:00: uevent: unsupported action-string; this will be ignored in a future kernel version

2. Pressing Fn/F4 does not trigger suspend to ram
   This normally triigers ACPI event which triggers suspend to RAM on Ubuntu
   (echo mem > /sys/power/state works)

3. After suspend to RAM, system wakes up but laptop's screen is blank,
   switching VTs etc does not help.
   External screen wakes up OK though.
   dmesg output from boot attached.

I also tested with latest git 8d4fbcfbe0a4bfc73e7f0297c59ae514e1f1436f
with the same result.

Works fine with 2.6.22.

My .config is attached.

Ingo, does ACPI work on your T60 with this kernel?
If yes could you post the .config please?

Thanks,

-- 
MST

View attachment ".config" of type "text/plain" (49623 bytes)

View attachment "dmesg.after-resume" of type "text/plain" (127404 bytes)