Same on Asus eee pc 1001p
$cat /proc/acpi/video/VGA/LCDD/brightness
levels: 1 5 8 10 13 16 20 22 25 27 30 34 38 42 47 51
current: 51
Max brightness: 13, 30, 47
on 16 backlight is off
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LCD brightness not correct on Asus Eee 1005
https://bugs.launchpad.net/bugs/546494
You received this bug noti
Workaround: changing GRUB_CMDLINE_LINUX_DEFAULT in /etc/default/grub by
adding 'acpi_osi="Linux" acpi_backlight=vendor'
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash acpi_osi="Linux"
acpi_backlight=vendor"
then sudo update-grub && reboot
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asus 1001p
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LCD brightness not correct on Asus Eee 1
