When I did have it working, I used the Fn + brightness keys to check the settings: the lowest setting is 490 and after that it goes up in increments of 488. The downside is that you can't change the brightness easily except by manually modifying the file /sys/class/backlight/intel_backlight/brightness ![]() # In order to enable or disable this script just change the executionĮcho 978 > /sys/class/backlight/intel_backlight/brightnessĬhmod 777 /sys/class/backlight/intel_backlight/brightness # Make sure that the script will "exit 0" on success or any other # This script is executed at the end of each multiuser runlevel. What you can do is to use a manual override that I used throughout development, by modifying /etc/rc.local as follows: #!/bin/sh -e I filed the bug here: Bug #1105604: Brightness control stopped working ![]() I have the same model and I had the same problem all the way through 13.04 development until one day before release and then it started working.
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