Sheridan Hutchinson wrote:
Package: laptop-mode-tools
Version: 1.36-1
Severity: normal
Hi Bart :)
I have been wanting to make this bug-report for some time, however I
have been waiting for 2.6.24 to filter into testing (just to be sure)
before I made it.
On my system at least, this is trivially easy and perfectly reliable to
replicate and it breaks down like this.
I use LMT to manage more or less just my disk in my Thinkpad X40 laptop.
I have stayed overall pretty faithful to the suggested settings in the
configuration file, however of paramount importance for me is that while
on battery power, the disk is to spin down fairly quickly and as often
as possible.
It appears to me that if I boot the laptop on its battery, or, if I boot
the laptop on AC and then pull the cord and run on battery,
laptop-mode-tools settings do indeed managed my hard disk correctly and
spin down.
My little disk (I'm too scared to check the load count!) has just spun
down now and therefore this machine is very quiet; it is obvious to me
when it has spun down.
Anyhow, back to the problem. If everthing is working properly and I'm
on battery power and the disk is spinning down, should I suspend or
hibernate this machine, upon resuming, spinning down will no longer
function.
From my tests I'm pretty sure as far as the system is concerned (and the
kernel) that it recognises it is using its battery (indeed the
auto-hibernate in powersaved works fine still) when I have resumed so
that can't be the problem. That said though, there does seem to be some
issue here and it's one that hopefully has straightforward solution.
When resuming from S3 or S4, is the configuration file for
laptop-mode-tools re-applied again? It would seem from my observations
that the bug is rooted in this point.
Let me know what I can do to get you any information you need; I have a
couple of weeks now where I'm off and could work on this.
Hi Sheridan,
Thanks for reporting! Could you check the following:
* Aafter resuming, does it work again after you run (as root)
"invoke-rc.d laptop-mode restart"?
* What suspend/resume software are you using? acpi-support, pm-utils,
hibernate, ...?
Cheers,
Bart
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