@ Jacques-Louis KREISS :
you must right set your Xorg.conf : Add the following line to the "Device" section of xorg.conf: Option "Monitor-LVDS" "<Monitor Identifier>" Then add the following line to the "Monitor" section of xorg.conf: DisplaySize <WIDTH in mm> <HEIGHT in mm> Replace the <...> with your own values. Here is an example... Section "Device" Identifier "Intel Corporation Mobile GM945 Integrated Graphics Controller" Driver "intel" BusID "PCI:0:2:0" Option "monitor-LVDS" "DCLCD" EndSection Works fine that way ... Section "Monitor" Identifier "DCLCD" Option "DPMS" "true" HorizSync 64.7-65.29 VertRefresh 59.883-59.954 DisplaySize 433 271 EndSection -- DDC report some ridiculous physical screen size (Mostly on Intel driver, and some ATI) https://bugs.launchpad.net/bugs/151311 You received this bug notification because you are a member of Ubuntu Bugs, which is the bug contact for Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs