RealVNC (net-misc/vnc-4.0-r1) has the following limitation. When the local machine is using a Xinerama or MergedFB based dual-head display, the program /usr/bin/vncviewer does not detect the two separate displays. When running in "Full Screen", vncviewer always spreads across both displays instead being able to do "Full Screen" on just one display. The following mail post at realvnc.com includes a patch to enhance vncviewer to understand the Xinerama extension: http://www.realvnc.com/pipermail/vnc-list/2004-May/045303.html I have modified the said patch by Jakob Kemi <jakob.kemi "at" telia.com> for VNC 4.0 , and tested it under Gentoo Linux on a PPC machine. Please find a patch and new ebuild to optionally include said patch with "xinerama" USE flag.
Created attachment 88967 [details] Ebuild updated with Xinerama support
Created attachment 88968 [details, diff] Patch to include -XineramaScreen option to vncviewer executable File should be placed at: net-misc/vnc/files/vnc-4.0/vnc-xinerama.patch with the other VNC 4.0 patches.
if 4.1.2 doesnt work, please e-mail this patch to the vnc list rather than us