Before ...

mi...@i8600:~$ uname -a
Linux i8600 2.6.27-9-generic #1 SMP Thu Nov 20 21:57:00 UTC 2008 i686 GNU/Linux

mi...@i8600:~$ sudo lsb_release -a|grep Description
Description:    Ubuntu 8.10

mi...@i8600:~$ sudo dmidecode | grep -i -a1 -b1 "Vendor"; sudo dmidecode | grep 
-i -a1 -b1 "Product Name" 
523-BIOS Information
540:    Vendor: Dell Computer Corporation
575-    Version: A14
1429-   Manufacturer: Dell Computer Corporation
1470:   Product Name: Inspiron 8600                   
1518-   Version: Not Specified
--
1697-   Manufacturer: Dell Computer Corporation
1738:   Product Name: 0P3490
1760-   Version:   

* Confirming comment #56 by Endolith, 1st and 3rd observation: hald-
addon-dell-backlight is taking much CPU, and strange behaviour of menus.

* Confirming comment #91 by Daniel Knitt-Frank: When I got locked due to
Fn+up/dn, I had to press Ctrl+Alt+F{n} then Ctrl+Alt+F7 again to fully
restore the functionality of keyboard.

* Confirming as well comments #126 and #131 by Wirawan Purwanto.

* Try last kernel from intrepid-proposed (2.6.27-11-generic, 22 dec.),
no change.

* Apply patch from Richard Hughes in comment #68 with modification from Kārlis 
M. in comment #93 (sources from git, on 24 dec.)
static struct dmi_system_id atkbd_dmi_quirk_table[] __initdata = {
        {
                .ident = "Dell Laptop",
                .matches = {
                        DMI_MATCH(DMI_SYS_VENDOR, "Dell Computer Corporation"),
                        DMI_MATCH(DMI_CHASSIS_TYPE, "8"),
                },
                .callback = atkbd_setup_fixup,
                .driver_data = atkbd_dell_laptop_keymap_fixup,
        },
Not so easy to compile ;-) (I haven't done it from years...)
Reboot, and ... it works !

mi...@i8600:~$ uname -a
Linux i8600 2.6.27-9-generic #1 SMP Wed Dec 24 14:40:03 CET 2008 i686 GNU/Linux

I forget to change the flavor...

This point is still not taken in account in new kernel release ?

-- 
Losing keyboard and mouse control when changing screen brightness with fn + 
arrow under intrepid
https://bugs.launchpad.net/bugs/285323
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