As near as I could figure out RTkit asked Polkit "do I have permissions to set this real-time?", and Polkit said "no". But perhaps I'm wrong; I found it all ver

As near as I could figure out RTkit asked Polkit "do I have permissions to set this real-time?", and Polkit said "no". But perhaps I'm wrong; I found it all very hard to debug as mentioned before, and I didn't care that much just to play some game. I don't have the game on my laptop any more; I'll have to try your pkcheck command next time (although that still won't fix anything, but might get me closer; thanks!) What I lament is not so much that things have changed, but that things have changed in ways I no longer understand or can debug. Back in the Old Days™ you could more or less understand your entire system from a few very basic principles. If something didn't work, you could go in there and usually figure it out on your own. Not that I have rose-coloured glasses about the Old Days™. I remember having to run that horrible "xfree86 -configure" thing when I was starting out with this whole Linux thing. Clearly, things are better now because the last time I had to look at "configuring X" is so long ago I don't even remember how to do it (or even what that filename was; /etc/x.conf? Or /etc/x11.conf? Not sure). I don't think it has to be like this. Just because "su" and "sudo" aren't sufficient and the concepts in e.g. Polkit are good doesn't mean the implementation of these concepts also is.