Brightness control (not just the applet) on Acer Aspire 6920G is broken (after 2.6.27-11 linux update)

[gidantribal]

Brightness control is broken on Acer Aspire 6920G using 2.6.27-11-generic x64 GNU/Linux.

It's not an applet problem, since I updated linux to JAUNTY and applet works properly and is responsive to hotkeys. But even on JAUNTY, brighness can't be controlled and is not responsive.

Actually when I start the system under 2.6.27-11-generic x64 GNU/Linux (on acer aspire 6920G)
    - my directory '/proc/acpi/video' is EMPTY
    - and LCD brightness can't be changed, both from terminal and FN keys.
    - Plus, if I use FN keys, the applet reacts to Brightness- but doens't react to Brightness+

when I start the 2.6.27-9-generic, instead, I have the proper directories and the system (and applet) working.

It's a pity the acpi has broken in this last kernel release.

[thelunatic83 (gaspare-scherma)]

I have this problem also on my aspire 6935g