OK, system (Debian ‘etch’) was installed and then upgraded to ‘sid’. Everything is working with Linux (kernel 2.6.18 from Etch):
- ACPI reports battery status, battery is charging without problems.
- Dell Wireless 1450 card works — I only had to install bcm43xx firmware (which I took from Cafuego’s Sarge Backports repository). There is also other way — Debian contain package
bcm43xx-fwcutterwhich extracts firmware from Windows drivers.
- Gigabit Ethernet works with
tg3kernel module (tested with 100Mbps Ethernet only).
- CPU Frequency scaling works with
speedstep-centrinomodule and provides wide range: 1600MHz, 1400MHz, 1200MHz, 1000MHz, 800MHz, 600MHz so it is possible to extend battery life with it.
- Backlight control (via Fn+Up/Down buttons) works — it is handled by hardware/BIOS probably.
- Touchpad was wrongly recognized — it is not Synaptic but ALPS so edit of
/etc/X11/xorg.confwas needed. All informations what to change are described in
xserver-xorg-input-synapticpackage). Idea found on Ubuntu blog.
- Suspend to disk works, suspend to RAM also works.
In other words — no problems yet — everything works like it should.
Dell D400 – installation report