I've got the same issue on a HP Pavilion dv6710ev
My brightness control is under /proc/acpi/video/VGA/LCD/brightness
I can put the brightness to max using: sudo sh -c 'echo -n 95 > /proc/acpi/video/VGA/LCD/brightness'
(95 is the highest value available, use cat /proc/acpi/video/VGA/LCD/brightness to get available values)
As a workaround I put this line in /etc/rc.local before "exit 0" to get brightness maxed at every boot:
echo -n 95 > /proc/acpi/video/VGA/LCD/brightness
I've got the same issue on a HP Pavilion dv6710ev
My brightness control is under /proc/acpi/ video/VGA/ LCD/brightness
I can put the brightness to max using: sudo sh -c 'echo -n 95 > /proc/acpi/ video/VGA/ LCD/brightness'
(95 is the highest value available, use cat /proc/acpi/ video/VGA/ LCD/brightness to get available values)
As a workaround I put this line in /etc/rc.local before "exit 0" to get brightness maxed at every boot:
echo -n 95 > /proc/acpi/ video/VGA/ LCD/brightness