Comment 53 for bug 333386

> Accepted linux into intrepid-proposed, the package will build now and be available in a few hours.
> Please test and give feedback here. See https://wiki.ubuntu.com/Testing/EnableProposed for
> documentation how to enable and use -proposed. Thank you in advance!

I tried to install the proposed linux image and all other packages as well: still NO GOOD NEWS. Problem still present (no responsive brightness, only applet).
Here you have results:
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cat /sys/devices/platform/acer-wmi/interface:
WMID
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ls -la /proc/acpi/video:
totale 0
dr-xr-xr-x 2 root root 0 2009-06-06 00:13 .
dr-xr-xr-x 11 root root 0 2009-06-06 00:06 ..
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ls -la /sys/devices/platform/acer-wmi/backlight:
totale 0
drwxr-xr-x 3 root root 0 2009-06-06 00:06 .
drwxr-xr-x 5 root root 0 2009-06-06 00:06 ..
drwxr-xr-x 3 root root 0 2009-06-06 00:06 acer-wmi
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ls -la /sys/devices/platform/acer-wmi/backlight/acer-wmi/:
totale 0
drwxr-xr-x 3 root root 0 2009-06-06 00:06 .
drwxr-xr-x 3 root root 0 2009-06-06 00:06 ..
-r--r--r-- 1 root root 4096 2009-06-06 00:15 actual_brightness
-rw-r--r-- 1 root root 4096 2009-06-06 00:15 bl_power
-rw-r--r-- 1 root root 4096 2009-06-06 00:07 brightness
lrwxrwxrwx 1 root root 0 2009-06-06 00:15 device -> ../../../acer-wmi
-r--r--r-- 1 root root 4096 2009-06-06 00:06 max_brightness
drwxr-xr-x 2 root root 0 2009-06-06 00:15 power
lrwxrwxrwx 1 root root 0 2009-06-06 00:06 subsystem -> ../../../../../class/backlight
-rw-r--r-- 1 root root 4096 2009-06-06 00:06 uevent
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brightness, actual_brightness, etc have 9 value by default....
If i do
echo 4 > brightness
laptop brightness isn't affected, brightness file changes to 4, but actual_brightness file keeps 9 value.