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v4l-conf(8) System Manager's Manual v4l-conf(8) NAME v4l-conf - configure a video4linux driver SYNOPSIS v4l-conf [ options ] DESCRIPTION v4l-conf is a small helper tool. It figures out the video mode and frame- buffer base address of the graphics board and configures a video4linux dri- ver like bttv. This is needed for drivers which can DMA the video over PCI directly into the video memory. Usually it is not required to use v4l-conf manually, xawtv(1) and fbtv(1) run it automatically at startup. It might be useful for trouble-shooting. v4l-conf must be installed suid-root. v4l-conf knows three ways to get the informations: * Query the X-Server using the XF86 DGA extension. This is the default if the DISPLAY environment variable is set. * Query the framebuffer driver. This is the default if DISPLAY is not set. * Query the console driver. This is used on mklinux only. OPTIONS -h Print a short description of all command line options. -q Be quiet. -d dpy Use the X11 display dpy to get the parameters. -f Use the framebuffer driver to get the parameters. -c device Set the video4linux device. -b n enforce n bpp color depth. Works for switching between 15/16 and 24/32 bpp. -s n Shift the video display by n bytes. -a adr Set framebuffer address to adr. The value should be specified in hex. This option is allowed for root only. You can't overwrite the autode- tected value, this switch is only useful if autodetect doesn't work be- cause the X-Server lacks DGA support. You can put this into /etc/conf.modules, as "post-install bttv ..." for example. -p pitch Set framebuffer pitch to pitch bytes. The value should be specified in decimal. Allowed for root only. BUGS Hope I haven't any security flaws in there. If you find one, drop me a note. Mails with patches are preferred :-) SEE ALSO xawtv(1), fbtv(1) AUTHOR Gerd Knorr <kraxel@goldbach.in-berlin.de> COPYRIGHT Copyright (C) 1997-99 Gerd Knorr <kraxel@goldbach.in-berlin.de> This program is free software; you can redistribute it and/or modify it un- der the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FIT- NESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. (c) 1997-99 Gerd Knorr v4l-conf(8)
NAME | SYNOPSIS | DESCRIPTION | OPTIONS | BUGS | SEE ALSO | AUTHOR | COPYRIGHT
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