When I type dmesg -n7 in console (ie when I switch to tty1 using Ctrl+Alt+F1) I can see all debugging messages (new disks plugged in, etc).When I type dmesg -n7 in virtual terminal (terminal emmulator) when logged in in my Desktop Environment, I see no dmesg messages.How can I see dmesg messages in virtual terminal ? 
dmesg -n7 has no effect in virtual terminal
tty;terminal emulator;dmesg