I use Kubuntu 6.06 LTS and 2.6.15-23-i386 kernel (2.6.15-26 is sound broken and touchpad does not work in laptop) and in my system (Fujitsu- Siemens Amilo L7300G2 laptop) this webcam works. I have exact the same webcam. It works with Ekiga (http://www.ekiga.org/) and GV4L (http://gv4l.sourceforge.net/).
Also mplayer shows picture if you use the following command: mplayer tv:// -tv driver=v4l This command captures real-time video stream without voice from webcam. If you want, you may scale image to larger: mplayer tv:// -tv driver=v4l -vop scale=800 ...then you will get 800x600 picture. You need to put only first size of layout. But if you use non-xvideo driver (e.g. vesa) at X.org then it might be quite slow or even hang your computer. You may check using command xvinfo, do you have any xvideo (xv) support at your graphics driver. I used driver "via" at my laptop and it has xvideo support. This laptop has VIA Unichrome 2D/3D integrated graphics adapter, which is known as poor 3D acceleration. But at least "via" driver has xvideo support and it's enough to play DVD-s, movies and other video streams with audio. If your device is v4l2 then use it. Try if does not know. I use MPlayer 1.0pre7try2. It is in universe or multiverse repository - these should be enabled in order to install MPlayer. But in Kopete it does not work. I tried in Kopete 0.12.1 and KDE 3.5.4 - not working :( But I don't care - I use MSN for typing and if I want to speak, I use Skype and for videoconferencing I use Ekiga. But as far as I owned webcam - no one did not have video conference with me. Most people does not have or use webcam. But at the same time some people are using quite frequently it. So, good webcam support is very appreciated and necessary feature at Ubuntu. Especially due to its pwc driver (http://www.saillard.org/linux/pwc/) support, which supports most of Creative and other webcams which are using Philips chipset including this Logitech QuickCam 4000 Pro. -- Problems with PWC for Logitech QuickCam Pro 4000 https://launchpad.net/bugs/56090 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs