[Laptop] Battery Time

Jessica Mahoney root at varusonline.com
Thu Nov 29 10:44:17 PST 2007

I used Kubuntu 7.04 for the linux system.  For FreeBSD, I had to use 
FreeBSD 7.0, since FreeBSD 6.2-R could not boot (no matter what I did, 
it just wouldn't work).  As for the laptop's hardware, it came with a 
Broadcom BCM4321AG (14e4:4328) Mini-PCIe card, which I removed since it 
doesn't work at all in FreeBSD and constantly dropped the connection in 
Linux.  For wireless, I'm now using a Linksys WUSBF54G, which requires 
the zyd(4) module.  Other than that, the machine is all OEM.

Why FreeBSD 6.2-R would not work:
Normal boot: hardlock on attach of hard drive (ad4)
ACPI Disabled: hardlock on attach of network (nfe0)
ACPI and nfe disabled: hardlock on attach of hard drive (ad4)

FreeBSD 6.2-R does not seem to like the nVidia MCP51 Serial ATA 
controller, but FreeBSD 7.0 is just fine.  Started with FreeBSD 
7.0-CURRENT 200709 and now have 7.0-BETA3.  Must use GRUB to load the 
loader (but the CD boots fine).


Alaksiej C wrote:
> Thanks Jessica, it's interesting. Would you please attach some details 
> (linux distro, FreeBSD version, out-of-the-box or tweaked)? I will you 
> use it to persuade my linux-loving friend :)
> Thank you in advance.
> On 11/29/07, *Jessica Mahoney* <root at varusonline.com 
> <mailto:root at varusonline.com>> wrote:
>     Thinking about this for a while, I decided to post it.  May not be
>     much,
>     but it is something.
>     In July 2007 I acquired a brand new Compaq Presario V6000Z laptop.  It
>     came with the "High Capacity 6-Cell Battery" (6,000 mAh battery),
>     an AMD
>     Turion 64 X2 @ 1.8GHz, and I also got the "Imprint Finish" so I could
>     get the FireWire and additional USB ports.  For what it is, $1,000
>     wasn't that bad.
>     It came with Windows Vista Home Basic.  This system took about two
>     minutes to boot, and sucked the battery dry in 90 minutes, even
>     with all
>     power-saving settings enabled (eeps!).
>     Then I installed Linux on it.  Linux had some serious stability
>     issues,
>     and even with everything I did, it was never all that stable, but it
>     booted in about a minute.  Linux did do better with battery time,
>     clocking 2 hours.  True, that's not much better, but still.
>     Well, I've been using FreeBSD for my servers, and I have had a few
>     FreeBSD desktops off and on over the years, so I decided to give it a
>     shot.  After installing FreeBSD and configuring the kernel/world, and
>     then installing some ports, I noticed something wildly different, so
>     different, that its freaking amazing.  FreeBSD boots in a mere fifteen
>     seconds (kernel: 11s; services: 2s; gdm+Xorg: instant; gnome-desktop:
>     2s).  FreeBSD is just as amazing with battery time, as I can now
>     get not
>     just two, but four hours of battery time.  Plus, its just as
>     rock-solid-will-keep-running-until-the-sun-blows-up stable as I
>     remember
>     from every other machine I've used as a FreeBSD desktop.
>     Quick recap:
>     Windows Vista: 2 minute boot, 90 minutes of battery
>     Linux: one minute boot, 120 minutes of battery
>     FreeBSD: 15 second boot, 240 minutes of battery
>     FreeBSD is pure awesomeness, made of awesome and win, featuring Power,
>     Performance, Stability, and Reliability.  I have also learned (from my
>     laptop) that FreeBSD is also a Green OS, as it causes the hardware to
>     use less power than other systems.
>     ~Jessica
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