I need a broad spectrum understanding on this subject, and any help would be greatly appreciated.
First of all, as I understand it...
The way the video hardware works is the CPU sends information about input and possible changes to the display, the video card receives these changes, makes the... (2 Replies)
does anybody have any experience with any of these composite video to usb devices on linux?
usb video capture - Google Product Search
would like to get one but a linux newbie and having trouble figuring out if any are ported...
i've found lots of things that link to freedesktop.org DisplayLink... (1 Reply)
ACPI_VIDEO(4) BSD Kernel Interfaces Manual ACPI_VIDEO(4)NAME
acpi_video -- ACPI Video Extensions driver
SYNOPSIS
device acpi_video
DESCRIPTION
This driver uses the ACPI Video Extensions to control display switching and backlight brightness. The availability of the sysctl(8) vari-
ables depends on the functions offered by the host's ACPI implementation.
SYSCTL VARIABLES
The following sysctls are currently implemented, where <device> is crt, lcd, or tv:
hw.acpi.video.<device>.active
Current state of the output device.
hw.acpi.video.<device>.levels
List of supported brightness levels.
hw.acpi.video.<device>.brightness
Current brightness level of the device.
hw.acpi.video.<device>.fullpower
Preset brightness level to be used in full power mode.
hw.acpi.video.<device>.economy
Preset brightness level to be used in economy mode.
Defaults for these variables can be set in sysctl.conf(5), which is parsed at boot-time.
SEE ALSO acpi(4), loader.conf(5), sysctl.conf(5), sysctl(8)HISTORY
The acpi_video driver first appeared in FreeBSD 5.3.
AUTHORS
The acpi_video driver was written by Taku YAMAMOTO <taku@cent.saitama-u.ac.jp>. This manual page was written by Mark Santcroos
<marks@ripe.net>.
BUGS
Some systems only perform output switching via SMM even though they export the proper information via ACPI. On such systems, the proper
hotkeys or OEM driver (for example, acpi_toshiba(4)) must be used instead.
BSD November 8, 2004 BSD