Bug#779412: Bug#783638: /sys/power/pm_async defaulting to 1 : unreliable resume event execution

[Chris]

Am Thu, 30 Apr 2015 16:06:27 +0530
schrieb Ritesh Raj Sarraf <rrs at debian.org>:

> It may not be that simple. If the asynchronous suspend feature has
> issues, this bug should go upstream to the linux kernel pm subsystem.
> 
> It definitely shouldn't be done in udev. That would just be a
> workaround.
> 
> And not all device combinations are causing the problem you've
> mentioned.
> 

Thank you, your lines helped to understand a little more.

Ok, so I guess the only one that may further the bug report may be
Ondřej, if he has a way to replicate and see the logs/symptoms,
others may try/look for it.

The assumption seems to be that kernel resuming the harddisk takes
longer than applying some hdd settings, so that the settings applied are
immediately reset.