mactel-support team mailing list archive

[indium <659780@xxxxxxxxxxxxxxxxxx>]

Dear Kurt,

since an automatic update of by the update-manager I also have problems
with the keys and the lcd backlight.

I first had 0.24 installed, for which all was working fine. With 0.25 I
got a completely dimmed screen. After reading some posts on the
internet, I thought I should have installed the nvidia-bl-dkms instead
of the mbp-.... version. This didn't help, and I now have both installed
at the same time.

Backlight control is not possible anymore, since /sys/class/backlight/
was empty. I then saw that mbp-.... was not loaded so I did

sudo modprob mbp_nvidia_bl , which fills this directory again. I can now
manually adjust by echo XXX
>/sys/class/backlight/mbp_backlight/brightness.

I noticed that the max_brightness value is *****  110400  ****  INSTEAD
OF 15 !!

So now, when I start pommed manually (pommed -d), it sets the brightness
to practically zero (15/110400).

Pommed won't accept a initial level of more than 15 in the /etc/pommed.conf file, so as soon as pommed runs, your screen goes off. 
I __CAN__ adjust it with pommed, but  it takes forever, with these small steps of 1. Somehow, it _does_ allow you to change the stepsize to 500 or so.

Now it seems to work, with these keys (f1,f2), but I do not the notify
window popping up for this (but I do for volume control, or eject).


SO:  the problem is partially related to the levels, which were 1-15 and now are 1-110400

-- 
mbp-nvidia-bl-dkms 0.25~lucid broken on MacBookPro6,2
https://bugs.launchpad.net/bugs/659780
You received this bug notification because you are a member of Mactel
Support, which is the registrant for Mactel Support.

Status in Mactel Support: New

Bug description:
After updating mbp-nvidia-bl-dkms 0.24.3~lucid to 0.25~lucid, backlight control is broken on MacBook Pro 6,2.
- Control keys to adjust brightness do not work anymore
- When unplugging the MacBook Pro from its power supply, the backlight is completely dimmed. Re-plugging the power supply restores the brightness to the value as it was before the laptop was unplugged.
- When the laptop is disconnected from its power supply and is booted, screen brightness is normal but not adjustable.

Running Ubuntu Lucid 64bit with generic kernel 2.6.32-25-generic.44
Using NVIDIA current drivers (195.36.24-0ubuntu1~lucid)
nvidia-bl-dkms is not installed as the backlight is steered by the Intel graphical adapter on the MacBook Pro 6,2