That command is the same with gnome and kde GUI. Please run '/usr/bin/nice -n 19 /usr/bin/ionice -c2 -n7 /usr/bin/backintime --backup-job' in Terminal and post the output.
That command is the same with gnome and kde GUI.
Please run '/usr/bin/nice -n 19 /usr/bin/ionice -c2 -n7 /usr/bin/backintime --backup-job' in Terminal and post the output.