Hello, Bonjour, I finally managed to use PowerBookG3 with a projector (to use with simpress). Originally the projected image was yellow. Here follows original /etc/X11/XF86Config (yellow image thus): I make transformations like indicated with arrows below. ==> i have no more yellow screen with KDE but can't have more than 800x600 resolution (which does not disturb me) and with 1024x768 ==> yellow screen) But the image is blurred/fuzzy or more precisely split into two image. It is thus difficult to see the details. Does anybody have a way to set the problem. Do I have tp play with HorizSync (now 31-65) or VertRefresh (now 58-78). Thanks Alain Here follows XF86Config: Section "Device" BoardName "Mach64 LI" BusID "0:17:0" Driver "ati" Identifier "Device[0]" Option "dpms" Option "reference_clock Mhz" "29.498928" VendorName "ATI" EndSection ========= below my modifications indicated with arrows =========- Section "Screen" DefaultDepth 15 ======> changed in 8 SubSection "Display" Depth 15 =====> changed in 8 Modes "1024x768" =======> changed in 800x600 EndSubSection SubSection "Display" Depth 16 Modes "1024x768" EndSubSection SubSection "Display" Depth 24 Modes "1024x768" EndSubSection SubSection "Display" Depth 32 Modes "1024x768" EndSubSection SubSection "Display" Depth 8 Modes "1024x768" EndSubSection Device "Device[0]" Identifier "Screen[0]" Monitor "Monitor[0]" EndSection So it works but how to sharpen the image. Thanks -- Alain Barthélemy cassandre@gminformatique.com bartydeux@gminformatique.com http://bartydeux.gminformatique.com