Re: Power Mgt on Laptop
On Fri, 2 Apr 2004 14:10:29 -0800
Jeff Coppock <email@example.com> wrote:
> Lately, I've been working on making my laptop as efficient on power as
> Dell Latitude C610, BIOS version A16, Testing release.
> There is a lot of information out there on this subject and I've
> accomplished quite a bit on the system:
> 1. I mount my EXT3 partitions with noatime
> 2. I have /tmp mounting in memory with tmpfs
> 3. I adjusted syslog-ng logging with the sync() option to buffer 5
> lines before writing to file
> 4. I do not use swap since I have enough memory to handle all my
> But, in spite of this I simply cannot get the HDD to spin down with
> KDE running. If I exit to KDM, it works just fine. With KDE
> running, I've tried stopping all the daemons I can and still no joy.
> I've tried to see what was accessing files/dirs using the following
> echo "Finding new files and dirs 5 minutes old."
> echo "Files..."
> find / -mount -type f -amin -5
> find /usr -mount -type f -amin -5
> find /home -mount -type f -amin -5
> echo "Directories..."
> find / -mount -amin -5
> find /usr -mount -amin -5
> find /home -mount -amin -5
> I can get KDE to a point where nothing KDE-related shows up, but still
> no joy.
> I've also found that noflushd doesn't work by testing it against
> hdparm-S, which does work. So I'm using hdparm now.
> I'm thinking now that it's hopeless with KDE running, that I won't be
> able to read email or other doc's offline without the HDD spinning and
> burning battery. If anyone has idea's or suggestions to help me out,
> I'd really appreciate it.
I forgot to mention my kernel information. I'm running a self-compile
2.4.21 kernel, which is configured properly for what I need/want. I'm
stuck at this version for an application I need that won't run on newer
kernels yet. I looked into laptop_mode, but I'm not convince it will
buy me anything compared to what I have so far.
Jeff Coppock Systems Engineer
Diggin' Debian Admin and User