mactel-support team mailing list archive

[rydberg <rydberg@xxxxxxxxxxx>]

>So it seems to be reading quite low

Yes, this is the experience on several models: MBA11 and MBP41 fall into
the same category as your MBP51. The readings are low, but the full span
0-255 is actually used, which can be seen when exposing the sensor for
extreme light. The real problem seems to be that neither the kernel nor
gnome is equipped to handle sensor readings with such a large dynamic
range. For instance, the hal interface used by g-p-m is far too course-
grained, only allowing integer percentage values.

>is this something specific to the applesmc driver on MBP 5,1

At least on my MBA11, the behavior is precisely the same. This could
most likely be improved upon in the driver, it has just not been done.

-- 
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.