I finally did get my fan under control in Puppy Linux. It involved modprobe commands for both the fan and thermal modules (I configured them to start on boot) and getting a cron job running to check CPU temperature at 5-minute intervals and turn the fan on or off depending on temperature.

I'm working on writing the whole thing up. But first I want to thank the Gateway Solo 1450 owners and Puppy Linux users whose expertise I drew on to get it done.

Even with the cron job running, I think the fan runs less under Debian and Ubuntu. There must be a different set of parameters for determining fan status. Perhaps cron's check every 5 minutes of the CPU temperature is a much longer interval than those other systems use. I'll have to look into it.

Another thing I'll be looking into is what my "trigger" points for the fan are. I currently have it set to start at 50 C and stop at 40 C. Maybe I can shift those numbers a bit to have the fan run less but still keep the CPU at an acceptable temperature.

While I'm giddy as shit at being able to run Puppy without the fan blasting the whole session, I'm still not as satisfied as I would be if it were managed as well as Debian does in EVERY Linux distro I use. But at least I can take what I learned in Puppy and try it in other distros that don't control the fan on this laptop. I'd love for this to work in BSD, too, but who am I kidding? I'll have to try my shell scripts and modprobe commands in BSD and see what happens. Probably nothing.

thing bothers me, though. If I were running a fanless PC, this wouldn't be a problem. It makes me want to build a fanless mini-ITX VIA box with parts from the Damn Small Linux Store or Logic Supply. And why can't their be a fanless laptop? If only I had enough skill, time and crazy-in-the-headness to build my own laptop. (I know this one has a fan, but I'd do it sans fan.

This post originally appeared on The CTRL freak blog.

During Debian Etch's boot sequence on the Gateway Solo 1450, I noticed a couple of things happening while the ACPI modules were loading.

Two words flashed by:

Fan
Thermal

Could these be the key to my problems with the Gateway Solo 1450's noisy, always-on fan with distros that are NOT Debian Etch, Ubuntu (WITHOUT the latest kernel) and CentOS 5?

What if I opened a root terminal and did the following:

# modprobe fan
# modprobe thermal

Could that be enough to stop my noisy-fan problem? That would be too easy.

In other news, Puppy flies on the Gateway. Damn Small Linux runs, but barely. I haven't been able to get the X configuration right. And I have to disable scsi while booting. I'm not sure if I can boot with PCMCIA either. Strange, for sure. Slackware-derived distros also die in the SCSI process.

This post originally appeared on The CTRL freak blog.