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[Bug 538326] Re: nvidia-bl-dkms 0.16.1 breaks screen brightness (backlight) adjustment on MacBook 5.1 [Karmic]

 

I am attaching nvidia-bl-dkms version 0.15.4 for Ubuntu 9.04 Karmic
Koala. To install it, download the file, then double-click the file, or
from the Terminal, run

sudo dpkg -i nvidia-bl-dkms_0.15.4~karmic_all.deb

It will remove version 0.16.1 and install 0.15.4. After this, you may
wish to "pin" this package to this specific version, so that it will not
upgrade to 0.16.1. In the terminal, run:

echo "nvidia-bl-dkms hold" | sudo dpkg --set-selections

You can then "un-pin" the package to try a new version of nvidia-bl-dkms
when one is released using the following command in the terminal:

echo "nvidia-bl-dkms install" | sudo dpkg --set-selections

** Attachment added: "nvidia-bl-dkms_0.15.4~karmic_all.deb"
   http://launchpadlibrarian.net/40929899/nvidia-bl-dkms_0.15.4%7Ekarmic_all.deb

-- 
nvidia-bl-dkms 0.16.1 breaks screen brightness (backlight) adjustment on MacBook 5.1 [Karmic]
https://bugs.launchpad.net/bugs/538326
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Status in Mactel Support: New

Bug description:
On my MacBook 5.1, upon updating to nvidia-bl-dkms 0.16.1~karmic, the brightness controls fail to have physical effect on the brightness of the screen. The screen brightness remains at 100% brightness.

Pressing the brightness keys brings up the brightness indicator in the notifications area, and cause the brightness bar to move up or down very slowly (see Bug #357112), however this has no effect on physical brightness. Similarly, using the slider under System -> Preferences -> Power Management has no effect on physical brightness.

This is a severe regression. The 0.15 series was annoyingly slow to respond, but this new series doesn't respond at all.





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