RE: Squeeze. nVidia video. How to change brightness with functional (Fn) keys?
As far as I know, the Fn Keys function depends from model to model. So you must research on your model hardware.
On my Laptop, an Acer Aspire, the brightness functions (Fn + <- / ->) works independet of the installed kernel or system, even on boot, so I think they are implemented on the hardware. Other Fn functions, like the multimedia ones, are managed by the system, so I configured their X keycodes on /etc/X11/Xmodmap and keybindings on my window manager.
Other model Keys, such as wireless and program launchers, are not detected by the system or X, so I don't think how to configure then.
Paulo Diovani Gonçalves
> -----Original Message-----
> From: Klistvud [mailto:email@example.com]
> Sent: Monday, September 27, 2010 1:24 PM
> To: firstname.lastname@example.org
> Subject: Re: Squeeze. nVidia video. How to change brightness with
> functional (Fn) keys?
> Dne, 27. 09. 2010 17:00:10 je Mark Goldshtein napisal(a):
> > As I may see, power saving features are working already. Laptop mode
> > tools are not installed. Probably, there is something which controls
> > these functions already? I mean, CPU governor, what to do if lid is
> > closing, display dimmer, suspend, hibernate and so on.
> Someone please correct me if I'm wrong, but I think that:
> -- having Gnome desktop environment installed, laptop-mode-tools are
> redundant, since Gnome is already managing all the power-saving
> features you may need
> -- brigthess (and other) Fn keys on laptops are highly dependent on:
> a) the specific kernel used, and
> b) the video driver used.
> For example, in my specific case (HP 6715b laptop, with ATI card and
> proprietary fglrx driver, running stock Debian Lenny 2.6.26-2 kernel)
> Fn keys work seamlessly, but the LCD backlight can never be switched
> off; when power saving kicks in, the display goes black (no image
> displayed), but the LCD doesn't actually switch off, it's still
> backlighted. When I run with the open source driver, vice versa, the
> LCD backlight can be made to switch off, but some of the Fn keys --
> notably, the brightness keys -- don't work.
> That said, I'd *unconditionally* recommend the free driver if you can
> do without the additional proprietary features, such as accelerated 3D
> (which is of limited use on GNU/Linux anyway), because:
> -- the free (open-source) driver is the only driver you can reasonably
> expect to get debugged in time; proprietary developers have other
> priorities, such as Windows drivers, new "features", keeping up with
> the competition, meeting deadlines; and
> -- the closed-source driver introduces instability into your system;
> when glitches or crashes occur, open-source developers can't do zilch,
> while the proprietary developers ... well, be my guest, try to make
> them iron out the bug ... ;P
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