mactel-support team mailing list archive

[Mario Schwalbe <schwalbe@xxxxxxxxxxxxxxxxx>]

Since the F1 and F2 brightness keys and the slider applet also require
additional HAL support to work, can someone please confirm whether it
works or not by running:

$ cat /sys/class/dmi/id/product_name
$ echo <value between 0 and 1023> | sudo tee /sys/class/backlight/nvidia_backlight/brightness

That's because I got inconsistent reports so far.

-- 
nvidia-bl-dkms 0.15.1 update breaks backlight
https://bugs.launchpad.net/bugs/516354
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Support, which is the registrant for Mactel Support.

Status in Mactel Support: New
Status in Ubuntu: New

Bug description:
Since February 1st's 0.15.1 update of the nvidia-bl-dkms package, the backlight of the screen cannot be changed.
This happens on my Macbook Pro 5-3 but also happens to the 5-5 model according to http://ubuntuforums.org/showthread.php?p=8756152 , so it doesn't seem very far-fetched to say that might happen to all Macbook Pros.

Downgrading nvidia-bl-dkms to version 0.15 makes the screen backlight slider "slidable" again but it has no impact on the screen's actual backlight.

Using Kubuntu 9.10 64-bit on a Macbook Pro 5-3 with kernel 2.6.31-17-generic (but it does the same on the previous kernels as well).