Latest working kernel version: 2.6.28 Earliest failing kernel version: 2.6.29-rc1 Distribution: Gentoo Hardware Environment: Sony Vaio SR19XN Problem Description: After acpi button event, the system correctly goes for shutdown but at the end it stops without poweroff. I've filled a bug report [http://bugzilla.kernel.org/show_bug.cgi?id=12448] and i thought that's was an acpi problem but doing a kernel bisect between 2.6.28 and 2.6.29 if found that the problem is in the commit: 1289e9e8b42f973f2ab39e5f4f2239ff826c27e9 Below you can find the output of the bisect, and in the kernel bug report 12488 you can find a lot of others information. thanks for the attention. here is the kernelk bisect output: 1289e9e8b42f973f2ab39e5f4f2239ff826c27e9 is first bad commit commit 1289e9e8b42f973f2ab39e5f4f2239ff826c27e9 Author: Takashi Iwai <tiwai@suse.de> Date: Thu Nov 27 15:47:11 2008 +0100 ALSA: hda - Modularize HD-audio driver Split the monolithc HD-audio driver into several pieces: - snd-hda-intel HD-audio PCI controller driver; loaded via udev - snd-hda-codec HD-audio codec bus driver - snd-hda-codec-* Specific HD-audio codec drivers When built as modules, snd-hda-codec (that is invoked by snd-hda-intel) looks up the codec vendor ID and loads the corresponding codec module automatically via request_module(). When built in a kernel, each codec drivers are statically hooked up before probing the PCI. This patch adds appropriate EXPORT_SYMBOL_GPL()'s and the module information for each driver, and driver-linking codes between codec-bus and codec drivers. TODO: - Avoid EXPORT_SYMBOL*() when built-in kernel - Restore __devinit appropriately depending on the condition Signed-off-by: Takashi Iwai <tiwai@suse.de> :040000 040000 b0a71438bd4110e07491ed00710449532a3dbd15 ebeda50646e1fbea8dd9f31040133b307bf5d8f6 M sound Steps to reproduce:
It's likely a bug in gentoo alsasound init script. See bug 12321: http://bugzilla.kernel.org/show_bug.cgi?id=12321