On August 17, 2006 06:08 pm, Adrian Irving-Beer wrote: > On Thu, Aug 17, 2006 at 05:08:31PM -0400, Hugh Campbell wrote: > > Very occasionally, when I print a document under KDE, the KDE print > > dialog will appear, but there will be no printers defined in the > > appropriate drop-down buttons, etc. The blank dialog just sits > > there frozen, unable to even be closed. It seems like it can't read > > its own configuration and gets stuck. > > Actually, whenever you launch a print dialog like the KDE one, it > connects to the CUPS server and requests a list of printers so that it > can fill in that drop-down list of them. So this is likely just the > exact same issue as the server itself freezing. > Sorry, no matter how many times I read my own posts before I push send, I still fail to notice ambiguities. The Cups server is the same machine that is running the KDE print dialog. It's all taking place on one machine. > Sorry I can't help with the problem itself, but at least I can offer > some assurance that you really do have one problem, not two. ;) > > You may wish to run an "strace -f -p <pid>" on the CUPS server, and > see what system call it's blocking on when it does freeze. Ok, that's a great suggestion, and I will try it next time it happens. I couldn't visually spot any increase in CPU load on any process using top or ps, and had no idea how else to diagnose. Thanks Adrian. Hugh