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I meets a problem that my laptop boots with full screen brightness and full keyboard backlight.

According to a post on Ubuntu forum for Macbook (, it is possible to fix it by editing /etc/rc.local. However, it do not work on my ASUS Zenbook UX32VD. Moreover, I want to disable the touchpad by default.

Could you please tell me the methods to deal with these problems?

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Thank you for your attention.

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It works here. I've added chmod a+w /sys/class/backlight/acpi_video0/brightness to my rc.local and I can now do echo 1 > /sys/class/backlight/acpi_video0/brightness which works as expected. Brand new Zenbook UX301LA, Linux tpc 3.11.0-15-generic #25-Ubuntu SMP Thu Jan 30 17:22:01 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux.

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casper@casper-UX32VD:/etc$ chmod a+w rc.local chmod: changing permissions of ‘rc.local’: Operation not permitted How to deal with this problem? – Casper LI Feb 6 '14 at 16:29
I used "sudo" to change the permission to a+w and added like what you add. However, whatever what I try to add, the full screen brightness still exists. – Casper LI Feb 6 '14 at 16:51
I meant: add "chmod a+w /sys/class/backlight/acpi_video0/brightness" to your rc.local – tschottdorf May 29 '14 at 1:46

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