Hi, Thanks for your reply. I send you the required information attached. I have been looking for information and it seems that DGA support has been removed from intel driver. This is the comment in Changelog file: ================================================== commit 5e80297d088e8cdbf66d765f7d252dab66c8df86 Author: Keith Packard <<a href="mailto:keithp@keithp.com">keithp@keithp.com</a>> Date: Fri Sep 18 21:05:23 2009 -0700 Remove DGA support from the driver. The xf86DiDGA code required that the scanout buffer always be mappable, stay be at a fixed address in the aperture and have a constant size. With frame buffer resizing, the latter two are no longer true, and with KMS, we'd really prefer to not allow the former. The only option available to the driver is to completely disable DGA as the modes code has internal calls to the xf86DiDGA code when fetching new modes from the hardware. A fix for the DiDGA code will be added to the X server which will automatically initialize DGA for mode switching and input, but not frame buffer access, and not require any driver cooperation. Thus, the correct solution is for the driver to not call xf86DiDGAInit at all. For old servers, this eliminates a potential catastrophic problem where random memory is written by the X server. New servers will get the DIX-based behaviour automatically. Signed-off-by: Keith Packard <<a href="mailto:keithp@keithp.com">keithp@keithp.com</a>> ================================================== (From <a href="http://xorg.freedesktop.org/archive/individual/driver/xf86-video-intel-2.13.0.tar.gz">http://xorg.freedesktop.org/archive/individual/driver/xf86-video-intel-2.13.0.tar.gz</a>) I guess I can try to use an older version of this driver with dga support or try to enable DGA in the driver again... Is there any other possibility to get a pointer to a Video address? Any DGA equivalent? Thanks, Paco <div class="gmail_quote">2010/10/21 <<a href="mailto:courten@web.de">courten@web.de</a>> <blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;"> Hi, could you post your logfile Xorg.0.log and the output of dmesg | grep saa as well of lspci --vv for the sake of clarity ;-) --------------------- Von: "Francisco Javier Cabello Torres" <<a href="mailto:fjcabello@visual-tools.com">fjcabello@visual-tools.com</a>> Gesendet: 21.10.2010 18:29:45 An: <a href="mailto:xorg@lists.freedesktop.org">xorg@lists.freedesktop.org</a> Betreff: dga support <div><div></div><div class="h5"> Dear All, I have a debian based linux. I have updated Xorg to 1.7.7 version and since that I am not able to use a saa7134 video capture device. There seems to be a problem with DGA support because I am able to grab video from the device but I can't get the framebuffer address to display Overlay video. XF86DGAGetVideoLL method return a void pointer for Framebuffer. I have tested with Ubuntu 10.04 and there is no DGA support. I really need to display video using Overlay. Until now I have been using DRA to obtain frame buffer address. Given this address saa7134 driver is able to send the video directly to VGA screen. Is this capability still available using Intel glx driver and Xorg? Thanks in advance, Paco </div></div>___________________________________________________________ GRATIS! Movie-FLAT mit über 300 Videos. Jetzt freischalten unter <a href="http://movieflat.web.de" target="_blank">http://movieflat.web.de</a> </blockquote></div> -- Francisco Javier Cabello Torres Investigación y Desarrollo Research and Development ----- V I S U A L T O O L S C/Isla Graciosa, 1. 28034 Madrid, Spain. Telephone: + 34 91 729 48 44 Fax: +34 91 358 52 36 Clave pública: <a href="http://pgp.mit.edu:11371/pks/lookup?op=get&search=0xBBBE5820">http://pgp.mit.edu:11371/pks/lookup?op=get&search=0xBBBE5820</a> --------------------------------------