Hello, I have a command 'cmd', which takes a screencapture. I have two X running : - Display :0 on VT2 - Display :1 on VT3 I go to VT2 : CTRL+ALT+F2 I launch cmd : I have screenshot of the display :0, it's OK I go to VT3 : CTRL+ALT+F3 I launch cmd : I have screenshot of the display :1, it's OK But, I have an X program running on display :1, which takes screencaptures while I'm using display :0. And that doesn't work, for example : I go to VT3 : CTRL+ALT+F3 I launch "sleep 20 && cmd" During the sleep, I go to VT2 : CTRL+ALT+F2 I wait 20 seconds... Screenshot is done, but the result image is totally black. So, I suppose something makes the display :1 "blank" when I'm on display :0 ; I searched around the web, but didn't find any explication... Pleaz, Could someone explain me this behaviour ? Is there a way to get rid of this problem ? I can provide you more informations if you ask... Thanks. M.