$ cat /sys/class/dmi/id/product_name MacBookPro5,3 $ echo 0 | sudo tee /sys/class/backlight/nvidia_backlight/brightness [sudo] password for myusernamehere: (typed password) 0 (backlight not changed) $ echo 512 | sudo tee /sys/class/backlight/nvidia_backlight/brightness 512 (backlight not changed) $ echo 1023 | sudo tee /sys/class/backlight/nvidia_backlight/brightness 1023 (backlight not changed) $
I don't know if this is relevant, but back on an older version of Ubuntu, the keys weren't working either and I to work around this I had set up two scripts that I had bound to the F1 and F2 keys, and they basically did the same thing: Incremented or decremented the contents of the brightness pseudo-file. However, the file path was /sys/class/backlight/mbp_backlight/brightness, not /sys/class/backlight/nvidia_backlight/brightness. I do not have a /sys/class/backlight/mbp_backlight/brightness file any more now. -- nvidia-bl-dkms 0.15.1 update breaks backlight https://bugs.launchpad.net/bugs/516354 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 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). _______________________________________________ Mailing list: https://launchpad.net/~mactel-support Post to : [email protected] Unsubscribe : https://launchpad.net/~mactel-support More help : https://help.launchpad.net/ListHelp
