> xset needs to connect to the X server, so it needs both for the > DISPLAY to be specified and also to have access to the XAuthority > cookie for the X server. Otherwise it will not work - can't connect to > the X server. > > Since acpid runs as a sytem service it ussually doesn't have access to > that information. Hmm, so, so far, everything seems to be working fine... One can play "DISPLAY=:0" before "xset dpms force off", but how does one grant it access to the XAuthority cookie?