Hi All, I wanted a way to blank the screen (stop drawing of image on monitor) from the user space may be by calling an IOCTL or something. I looked at the kernel code for video drivers and find that the drivers do implement a blank/unblank interface that allows the user space application to set the VSYNC to zero. This might be possibly used by power management APIs to blank the screen. Wanted to know how do i invoke this kernel routine from the user space. I guess there should be a ioctl interface or something equivalent for it. For example <linux-kernel-source>/drivers/video/vgacon.c implements a callback for con_blank called vgacon_blank. Could anyone direct me on how to call this interface from the user space? Thanks, -Jinu -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ FAQ: http://kernelnewbies.org/faq/
