Kernel Bug Tracker – Bug 5446
Audio bangs on poweroff
Last modified: 2008-09-22 15:55:14 UTC
Most recent kernel where this bug did not occur: 2.6.12; 2.6.13; 2.6.14-rc3
Hardware Environment:laptop samsung nv5000, sound ES1988 Allegro-1
Software Environment:kernel + alsa
Power_off process is not correct, sound device mas to be disabled before power
off. This is realy dangerous, if device is not disabled it's make laut sound
impuls wich can damage hardware.
Actualy i don't have rigt to say it's not correct but dangerous :o)
I added "modprobe -r snd-maestro3" to halt script. It's halp power_off properly,
with out any krash_sound but it's need alsa compiled as module.
Does the patch below help?
Created attachment 6323 [details]
Add reboot notifier
Created attachment 6325 [details]
Add PCI shutdown callback
The second one (in comment #5) is better.
I tryed therst one but it's not helping.
The secend one i will try leater. I tryed poweroff with "alsactl power off"
added to the halt script ... it's working too.
I tryed second one, result negative.
Both together don't help too.
I'm confused about the kernel version.
The Kernel version box above says 2.6.12, 2.6.13, 2.6.14-rc3
Does the problem exist or not exist in those kernel versions?
Is there a version where the problem does not exist?
If yes, what is the most recent version where there is no problem?
This is tested wersions and all of them with this problem.
> Is there a version where the problem does not exist?
i didn't found it. I think no.
Sory if it's confusing you.
I ting Bug 5398 depends on power managment like this one too.
Alexey, please confirm if bug exists with latest kernel.