<div dir="ltr">Thanks for tips, based on them I tried more. My HW is I guess the XM3100 00:02.0 VGA compatible controller: Intel Corporation Mobile GM965/GL960 Integrated Graphics Controller (rev 0c) So I went again and set Virtual to Virtual 2720 1024 (which will satisfy even my 1280x1024 monitor I have at work). I restarted X (without monitor connected, otherwise I am presented with cloned login manager with one screen crippled) and DRI is working. Then I connected the monitor and issued the command: xrandr --output VGA --left-of LVDS --mode 1280x1024 And now I have the connected screen left of my laptop. Nice. Now some hitches, I do not know if any stuff I am going to mention is supposed to work so should I fill the bugs? My setup is Ubuntu 8.04.1 with Gnome. 1. when I switch it using the xrand command approximately half of my laptop screen becomes unusable <a href="http://www.flickr.com/photos/stereoit/2700416671/">http://www.flickr.com/photos/stereoit/2700416671/</a> 2. the only way to get everything ok is to go to ChangeDesktopBackground->VisualEffects and turn off Copmiz (i.e Metacity comes to rule). I can change the layout of screens using the "ScreenResolution" applet from System->Preferences (even before I switch off the Compiz but it had no effect on the half screen being unusable). 3. Once I do this, I cannot reenable compiz (not sure where it logs, I have no .Xerrors nor anything in /var/log/daemon.log or Xorg.0.log), it just says Cannot Enable. 4. My Gnome panel is always moved to the external screen, but my goal is basically come to work, plug the external monitor and use it as extra work space, no moving my main screen to it. Is there anything I can do about it? Best regards, Robert <div class="gmail_quote">2008/7/25 Marius Gedminas <<a href="mailto:marius@gedmin.as">marius@gedmin.as</a>>: <blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"> <div class="Ih2E3d">On Fri, Jul 25, 2008 at 12:01:12PM +0200, Robert Šmol wrote: > by reading some web I see there is a maximum frame buffer size fixed at > 2048x2048 pixels by default and intel-driver is not able to recompute this > when new monitor is plugged in. I also read that it is possible to create a > SubSection "Display" and increase it with 'Virtual' parameter (which works > for me). But by going beyond 2048x2048 disables the DRI. </div>What's the hardware? On an Intel 965 you can have accelerated 3D on a screen up to 4096x4096 (it could be 8192x8192, but Mesa has its own limits). I'm not sure what's the minimum driver version needed for textures larger than 2048x2048. I use Ubuntu's 2.2.1 from hardy-proposed (the 2.2.1 from hardy did not support large textures) and a patched Mesa. <a href="https://launchpad.net/bugs/146859" target="_blank">https://launchpad.net/bugs/146859</a> has the details. <div class="Ih2E3d"> > Since my laptop screen is 1440x900 and the projector is 1024x768 to setup > those two next to each other will require 2064x900 which is larger then 2048 > I guess my DRI will be always disabled, loosing all the nice Compiz stuff. </div>I'm currently using Compiz on a 2560x1024 desktop. HTH, Marius Gedminas -- You can't spell evil without vi. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.2.2 (GNU/Linux) iD8DBQFIia2JkVdEXeem148RAk1cAJ9gtqZ8E2z561qpcuT0eePiFV3e7wCfYV2C YgbiLsv6CearC149X+4Wl2c= =RZIM -----END PGP SIGNATURE----- _______________________________________________ xorg mailing list <a href="mailto:xorg@lists.freedesktop.org">xorg@lists.freedesktop.org</a> <a href="http://lists.freedesktop.org/mailman/listinfo/xorg" target="_blank">http://lists.freedesktop.org/mailman/listinfo/xorg</a> </blockquote></div> </div>