I should probably note this was going from kernel 3.12.1 to 3.13.4.
Honestly it's probably not a big deal for me, as I just noticed that
the xbacklight and sysfs interfaces provided by the intel drivers seem
to be working for me. For Ubuntu / gnome / Any full fledged DE users
they probably wouldn'
Hello, I am using a Lenovo X240. Since upgrading to kernel 3.13 I've
not been able to control my backlight and I get the following error
message when the thinkpad_acpi module is loaded:
thinkpad_acpi: Unsupported brightness interface, please contact
ibm-acpi-devel@lists.sourceforge.net
It worked
