mactel-support team mailing list archive

[rydberg <rydberg@xxxxxxxxxxx>]

Although I am happy that you are looking into this problem, I think the
patch is doing the wrong thing:

1. It is introducing more state to the desktop setup - it should be
possible to determine the right scaling automatically.

2. The scaling factor in the patch is integral - this is causing all
sorts of hysteresis problems, and is the source of the light sensor
problem in the first place, since HAL does not treat fractional percent
in the dbus interface. Continuing along that track cannot be good.

The problem with the low light sensor reading seems to have to do with
the new macbooks, starting with MBP41, via MBA11 to the MAP51. Evidently
the interface changed, since the new models report a SMC key length of
10, compared to the old 6. Most likely the applesmc_light_show() could
be fixed for those models, since the current code only reports values
for the left sensor, although two sensors are present.

-- 
Backlight keeps getting darker on MacBookPro
https://bugs.launchpad.net/bugs/285815
You received this bug notification because you are a member of Mactel
Support, which is the registrant for Mactel Support.

Status in Mactel Support: Fix Released
Status in “gnome-power-manager” source package in Ubuntu: Confirmed
Status in “hal” source package in Ubuntu: New

Bug description:
Binary package hint: hal

kjano@xxxxxxxxxxxxxxxx:

i am using a macbook pro 3.1 with intrepid beta and the nvidia driver. i finally managed to have the backlight keys F1 and F2 working but now i face another problem. when i change the backlight setting, it resets itself after some minutes to an average light level. then i use f2 to increase backlight again and some time later it goes down again.i have deactivated the shade setting in the gnome power management. the light is also turned down while moving the mouse or typing.