/dev/fb*
Frame buffer resolutions are maintained using the utility fbset. It allows
to change the video mode properties of the current or a user defined
resolution. It's main usage is to tune video modes and to store custom
resolutions into one of the /dev/fb?user?
entries, e.g. during boot
up in one of your /etc/rc.*
or /etc/init.d/*
files, after
which those resolutions can be used by applications.
Fbset uses a video mode database stored in a configuration file, so you can easily add your own modes and refer to them with a simple identifier. The fbset install script also creates the special device nodes for the device dependent predefined resolutions.
/dev/fb*