I am using Ubuntu with xfce and setted there a few keyboard shortcuts (eg for terminal or task manager). At first they worked OK, but then they stopped working (even the preddefined ones which I didn't touch). I tried to search what the problem might be and fixed it by logging via tty and running "rm ~/.config/xfce4/xfconf/xfce-perchannel-xml/xfce4-keyboard-shortcuts.xml". This solution worked for about one day and the problem occured again, this time I could not fix it by removing the file. I tried another solution and changed all "Control" to "Primary" in ".config/xfce4/xfconf/xfce-perchannel-xml/xfce4-keyboard-shortcuts.xml", but it didn't work. I have no idea what the problem might be caused by and couldn't find a proper solution for it and as I am using sortcuts often, now I am quite desperate. Could anybody help me with this?