Sisctrl

Display Control Panel for XFree86/X.org SiS driver

sisctrl is a gtk-2.x based tool for the XFree86/X.org SiS “sis” driver to tune the display parameters during X server run-time. Among other features, it allows switching and changing output devices, tuning TV output, gamma correction and Xv hardware video properties. It also supports switching the display mode and resizing the desktop using the RandR extension.

WWW http//www.winischhofer.at/linuxsispart1.shtml#23