xcalib for Debian ----------------- * IMPORTANT NOTICE FOR MULTI-MONITOR USERS: xcalib (0.10.dfsg1-1) is now built with XRandR support. If multiple displays (including mirroring) are used, xcalib may now only affect the primary display by default. The '-screen' option can specify the display. For example, to invert the second display: xcalib -screen 1 -invert -alter -- Taro Konda Tue, 16 Jun 2026 22:00:00 +0900 You are very encouraged to read upstream README where it's explained ICC, VCGT tags and monitor calibration and profiling philosophy. If you are using xcalib on an Apple MacBook, OSX provides you some profiles: MacBook C2D (new MacBook Pro): /Library/ColorSync/Profiles/Displays/Color\ LCD-4271780.icc MacBook Pro CoreDuo (old MacBook Pro): /Library/ColorSync/Profiles/Displays/Color\ LCD-4271800.icc MacBook (not Pro) C2D (new MacBook): /Library/ColorSync/Profiles/Displays/Color\ LCD-4271780.icc (from http://gentoo-wiki.com/HARDWARE_Apple_MacBook#Colour_Profile) -- Jorge Salamero Sanz Thu, 30 Aug 2007 13:30:07 +0200