Changing brightness on a Sony Vaio laptop
Solution 1:
The solution for me was to edit the /etc/X11/xorg.con
f file. It's a problem with the graphics driver not the keymap.
Open the file for editing and add the line
Option "RegistryDwords" "EnableBrightnessControl=1"
in the Section "Device"
section as shown below.
Section "Device"
Identifier "Device0"
Driver "nvidia"
VendorName "NVIDIA Corporation"
Option "RegistryDwords" "EnableBrightnessControl=1"
Option "NoLogo" "True"
EndSection
Solution 2:
These shortcuts are controlled by the udev
subsystem.
In technical terms, all shortcuts are defined in /lib/udev/keymaps
. For example, for a standard Sony laptops, the file is /lib/udev/keymaps/module-sony
(new Sony laptops).
0x06 mute # Fn+F2
0x07 volumedown # Fn+F3
0x08 volumeup # Fn+F4
0x09 brightnessdown # Fn+F5
0x0A brightnessup # Fn+F6
0x0B switchvideomode # Fn+F7
0x0E zoom # Fn+F10
0x10 suspend # Fn+F12
For your case you may have to create a module-mysony
and add any changes there.
The link between laptop model and shortcut details is the file /lib/udev/rules.d/95-keymap.rules
.
Currently, there are two rules, for newer and older Sony laptops,
ENV{DMI_VENDOR}=="Sony*", KERNELS=="input*", ATTRS{name}=="Sony Vaio Keys", RUN+="keymap $name module-sony"
# Older Vaios have some different keys
ENV{DMI_VENDOR}=="Sony*", ATTR{[dmi/id]product_name}=="*PCG-C1*|*PCG-K25*|*PCG-F1*|*PCG-F2*|*PCG-F3*|*PCG-F4*|*PCG-F5*|*PCG-F6*|*PCG-FX*|*PCG-FRV*|*PCG-GR*|*PCG-TR*|*PCG-NV*|*PCG-Z*|*VGN-S360*|*VGN-SZ2HP_B*", ATTRS{name}=="Sony Vaio Keys", RUN+="keymap $name module-sony-old"