[Bug 340014] Re: Samsung NC10 fails suspend/Resume tests

[Steve Langasek]

In addition to CONTROL_HD_POWERMGMT, there are two other hdparm settings
that may be set: CONTROL_HD_IDLE_TIMEOUT and CONTROL_HD_WRITECACHE, and
of these, CONTROL_HD_IDLE_TIMEOUT is also set by default.  I don't think
this problem is limited only to APM calls, but that any hdparm calls
contribute to triggering it.

You shouldn't need to patch your kernel to get a trace of apm calls,
though; a simple wrapper script should do the job:

$ sudo dpkg-divert --add --local --rename /sbin/hdparm
$ cat | sudo tee /sbin/hdparm
#!/bin/sh

echo "called with args: $@" >> /var/log/hdparm.log
exec /sbin/hdparm.distrib "$@"
^D
$ sudo chmod a+x /sbin/hdparm
$

This should give you a log in /var/log/hdparm.log showing every
invocation of hdparm on the system.

-- 
Samsung NC10 fails suspend/Resume tests
https://bugs.launchpad.net/bugs/340014
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